Washing Of Article Patents (Class 264/233)
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Patent number: 10883195Abstract: A method produces an acrylic fiber bundle that are cleaned in one or more washing baths including an inflow portion and an outflow portion for a cleaning solution; at least one of the washing baths is a counterflow washing bath in which the cleaning solution flows into from the inflow portion located at a lower stream side position of a traveling direction of coagulated thread bundles, and flows out from the outflow portion located at an upper stream side position of the traveling direction of the coagulated thread bundles; and an average of coefficients of variation CV of linear speeds of the cleaning solution in the inflow portion of the counterflow washing bath is 0.30 or less, and an average of coefficients of variation CV of linear speeds of the cleaning solution in the outflow portion of the counterflow washing bath is 0.30 or less.Type: GrantFiled: January 30, 2018Date of Patent: January 5, 2021Assignee: Toray Industries, Inc.Inventors: Masaki Nakano, Kengo Hayashida, Hirotada Endo
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Patent number: 10793442Abstract: A method for forming zeolite nanosheets includes forming a mixture including a layered zeolite precursor and a functionalized polymer and exfoliating the layered zeolite precursor to provide the zeolite nanosheets.Type: GrantFiled: June 13, 2019Date of Patent: October 6, 2020Assignee: THE UNIVERSITY OF MASSACHUSETTSInventors: Horst H. Winter, Wei Fan, Vijesh Tanna, Sanket Sabnis
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Patent number: 10596790Abstract: Disclosed is a multilayered elastomeric article with hydrophobic polymers as a patient contacting surface, hydrophilic polymers as a wear contacting surface, and a blend of the hydrophobic and the hydrophilic polymers as an intermediate layer between two contacting surfaces. The article has low water absorption of the patient contacting surface to prevent virus penetration and a textured surface of the wear contacting surface to reduce the friction force between hand and glove surface. The hydrophilic polymers in wear contacting and intermediate layers of the article can increase water absorption and boost leaching effectiveness. High water absorption minimizes the uncomfortable feelings from excessive sweating. Increased effectiveness in leaching makes the article less cytotoxic. A method for making the disclosed elastomeric article is also provided.Type: GrantFiled: January 14, 2018Date of Patent: March 24, 2020Inventor: Fung Bor Chen
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Patent number: 10442181Abstract: A hydrogel object includes a polymer and water, wherein the rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent.Type: GrantFiled: July 13, 2016Date of Patent: October 15, 2019Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Iwata, Tatsuya Niimi, Yoshihiro Norikane, Takashi Matsumura
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Patent number: 9988271Abstract: A method of producing carbon fiber, yarns, and nonwoven carbon fiber cloths, includes forming suitable polymeric precursor microfibers and/or nanofibers using a centrifugal spinning process and decomposing at least a portion of the polymeric precursor fibers to form carbon fibers. The decomposition may be accomplished by treating the polymeric precursor fibers with acid vapor from an aqueous acid solution at a temperature of less than 250° C.Type: GrantFiled: December 1, 2014Date of Patent: June 5, 2018Assignee: Board of Regents of the University of Texas SystemInventors: Karen Lozano, Lee Daniel Cremar
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Patent number: 9458810Abstract: Methods and apparatus are provided for electrostatic discharge mitigation for a fuel module. In one embodiment, the system includes a fuel pump having a power and ground connection for pumping fuel. A fuel filter in fluid communication with the fuel pump, the fuel filter including one or more components made of a non-conductive plastic and having a sulfonated surface covered with a conductive surface formed over the sulfonated surface. The conductive surface is electrically coupled to the vehicle ground plane. A method is provided for mitigation of electrostatic discharge in a fuel module. In one embodiment, the method includes sulfonating non-conductive plastic components of the fuel module to provide a sulfonated layer on the non-conductive plastic components and forming a conductive layer over the sulfonated layer to provide an electrical discharge path for electrostatic buildup resulting from fuel moving through the fuel module.Type: GrantFiled: February 6, 2013Date of Patent: October 4, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Richard A. Novaco, Mitchell E. Hart
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Patent number: 9011739Abstract: Methods for making high quality polyimide fibers suitable for continuous industrial production are described. Polyimide fibers are continuously prepared from a polyamic acid solution through sequentially spinning the polyamic acid solution by either a wet or a dry-wet process, coagulating, drying or drying after washing, thermally treating and stretching the resulting polyamic acid fibers to obtain polyimide fibers, and winding polyimide fibers as prepared into rolls.Type: GrantFiled: February 17, 2012Date of Patent: April 21, 2015Assignee: Beijing University of TechnologyInventors: Dezhen Wu, Hongqing Niu, Shengli Qi, Enlin Han, Xiaona Yan, Guofeng Tian, Xiaodong Wang
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Publication number: 20150102519Abstract: A nitrile-rubber medical exam glove composed of a glove body which is a flexible layer of nitrile-butadiene rubber. The glove body has a chlorinated first surface forming a donning side of the glove body and an un-chlorinated second surface forming a grip side of the glove body. The elastomeric glove also includes a substantially uniform distribution of a release agent distributed over the un-chlorinated second surface of the glove body. The elastomeric glove has: (a) an average thickness of between about 0.03 to 0.12 mm in a palm region of the glove body as measured in accordance with ASTM D3767, procedure A; (b) an un-chlorinated second surface of the glove body characterized by a Surface Root Mean Square Roughness of from about 3.00 μm to about 6.55 μm; and (c) a failure rate of less than about 1 percent when the elastomeric glove is subjected to pinhole leak testing generally in accordance with ASTM D5151-06.Type: ApplicationFiled: December 17, 2014Publication date: April 16, 2015Inventors: Timothy M. Lipinski, Choong Kheng Tang
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Patent number: 8999212Abstract: A graphene ribbon fiber manufacturing process, where a coagulation medium flows in the same direction as the graphene ribbon fibers. The process for spinning graphene ribbon fibers starts with unzipping carbon nanotubes to form graphene ribbons, purifying and drying the graphene ribbons and subsequent dissolving of the graphene ribbons in a suitable solvent, preferably a super acid to form a spin-dope. The spin-dope is spun such that the accrued fibers are guided into a coagulation medium, also known as anti-solvent, where the spun or accrued fibers are coagulated. The coagulated graphene ribbon fibers are stripped, neutralized and washed and wound on bobbins.Type: GrantFiled: March 17, 2011Date of Patent: April 7, 2015Assignee: Teijin Aramid B.V.Inventors: Bernardus Maria Koenders, Jacobus Johannes Meerman, Stephanus Maria Kamperman, Ron Folkert Waarbeek Ter, Jorrit Jong De, Angelique Antonia Theresia Hendrikus Radier, Marcin Jan Otto
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Publication number: 20150079381Abstract: Anti-fog compositions comprising a primary film having opposing major planar surfaces and a central coplanar region, and processes for making such anti-fog compositions. The central coplanar region is disposed between the opposing major planar surfaces. The primary film comprises cellulose acetate, plasticizer, and an anti-blocking agent. The anti-blocking agent has an average particle size ranging from 0.02 microns to 6 microns. The cellulose acetate has a degree of substitution that increases from the opposing major planar surfaces toward the central coplanar region or that is substantially constant throughout the thickness of the composition. The composition is formed by saponifying a precursor film to improve hydrophilicity.Type: ApplicationFiled: September 17, 2014Publication date: March 19, 2015Inventors: Kevin Parker, Jo Marshall
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Patent number: 8926712Abstract: A solvent spun bamboo fiber with a high wet modulus and a producing method thereof are disclosed. The producing method includes: activating by adding a bamboo pulp into de-ionized water, adjusting the pH value, adding cellulase and adjusting the pH value by adding alkali; squeezing by vacuum dehydration; pre-dissolving by adding an aqueous solution containing 50-88% by mass of N-methylmorpholine-N-oxide; then dissolving by putting the above pre-dissolved mixture into a dissolver, heating, vacuumizing, dehydrating, dissolving, homogenizing and defoaming; spinning by spraying through a spinneret and forming a bamboo fiber by dry-wet spinning; water washing; bleaching; oiling; and drying. The present method is simple to operate, free of industrial pollution, low energy consuming, and highly safe. The bamboo fiber produced by the present method not only keeps the natural physical and chemical properties of bamboo fiber, but also has a high wet modulus without harmful chemical residues.Type: GrantFiled: September 7, 2010Date of Patent: January 6, 2015Assignee: Shanghai Lyocell Fibre Development Co., Ltd.Inventors: Kun Jiang, Xiaoliang Wang, Changli Zhu, Xin Wang, Dianhai Zheng
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Publication number: 20140374948Abstract: Surface retarder coating compositions of the invention are based on the use of at least one non-Ordinary Portland Cement (non-OPC) binder and at least one OPC set retarder agent, which are provided in powder form that can be mixed with water at the construction site. The coating is applied onto the surface of a mould or formwork using roller or spray equipment, and concrete can then be cast within 30-60 minutes against the coating. The OPC set-retarding agent operates to retard setting of the concrete so that it can be de-moulded the next day and its surface can be removed using a high pressure water spray to reveal aggregate embedded beneath the removed surface.Type: ApplicationFiled: November 30, 2012Publication date: December 25, 2014Inventors: Dany Vincent, Eric Dananche, Ara Jeknavorian
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Patent number: 8911649Abstract: The present disclosure provides polyimide fibers with kidney-shaped cross-section and their preparation methods thereof, falling within the technical field of polyimide fiber. Polyimide fibers with kidney-shaped cross-sections are prepared by a continuous, integrated approach, starting from a polyamic acid solution prepared by reacting an aromatic dianhydride with an aromatic diamine. PAA nascent fibers with kidney-shaped cross-sections are obtained by adopting a spinneret having circular orifices under wet spinning process. The kidney-shaped cross-sections are obtained by varying the processing condition, including spinning speed, coagulation bath composition, coagulation temperature, and depth of coagulation bath. After washing and drying, polyamic acid nascent fibers are converted to polyimide fibers with kidney-shaped cross-sections under thermal curing. The integrated preparation methods are suitable for mass industrial production.Type: GrantFiled: March 23, 2012Date of Patent: December 16, 2014Assignee: Beijing University of TechnologyInventors: Dezhen Wu, Enlin Han, Lun Li, Hongqing Niu, Gongping Shang, Shengli Qi, Xiaodong Wang
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Patent number: 8906278Abstract: Processes for producing carbon fiber, the filament thereof and pre-oxidized fiber are provided. In one embodiment, the gel spinning of polyacrylonitrile filament is achieved by using small-molecule gelling agent, and the carbon fiber obtained thereby is increased by 15% to 40% in tensile strength and by 20% to 35% in toughness. In another embodiment, the melt spinning process of polyacrylonitrile is conducted by using imidazole type ion liquid as plasticizer, the process reduces environment pollution, is suitable for industrial production and the fiber produced thereby is improved in its strength. In yet another embodiment, polyacrylonitrile pre-oxidized fiber is produced by melt spinning, so low cost and controllable pre-oxidization of polyacrylonitrile can be achieved. In a further embodiment, high strength carbon fiber is manufactured by using polymer thickening agent.Type: GrantFiled: January 11, 2010Date of Patent: December 9, 2014Assignee: Donghua UniversityInventors: Muhuo Yu, Huaiping Rong, Keqing Han, Zhaohua Wang, Yiwei Zhang, Yincai Tian, Qinli Dong, Xi Zhao, Hui Zhang
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Patent number: 8876979Abstract: A recyclable article having an external surface with an image printed thereon by droplets of ink is provided. The droplets of ink comprise a composition that includes a hydrophilic component. In embodiments, the hydrophilic component can facilitate the separation or loosening of the image from the external surface of the container when the image is exposed to a liquid-based solution at an elevated temperature. Methods for facilitating recycling of recyclable articles having printed images are also disclosed.Type: GrantFiled: June 24, 2011Date of Patent: November 4, 2014Assignee: Plastipak Packaging, Inc.Inventors: Ronald L. Uptergrove, Brent Mrozinski
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Patent number: 8877243Abstract: A process for making cross-linked polysaccharide gels, particularly cross-linked hyaluronic acid gels, under basic conditions. The resulting gels possess improved degradation characteristics, and are useful in a variety of medical and cosmetic applications.Type: GrantFiled: December 26, 2013Date of Patent: November 4, 2014Assignee: Ultraceuticals R&D Pty., Ltd.Inventors: Simone Charlotte Vonwiller, Geoffrey Kenneth Heber
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Publication number: 20140312517Abstract: Refrigerated hydraulic cement compositions comprise a mixture of (a) ?-tricalcium phosphate powder, (b) monocalcium phosphate comprising monocalcium phosphate anhydrous (MCPA), monocalcium phosphate monohydrate (MCPM), or a combination thereof, wherein a 0.1 g/ml saturated aqueous solution of the monocalcium phosphate has a pH less than 3.0, (c) non-aqueous water-miscible liquid, and (d) an aqueous hydrating liquid. The aqueous hydrating liquid is included in an amount of about 1-50 volume percent, based on the combined volume of the non-aqueous water-miscible liquid and the aqueous hydration liquid, and the refrigerated hydraulic cement composition is storage stable for greater than one day, without setting. Methods of forming hardened cements in vivo and/or for forming implants for use in vivo employ the hydraulic cement compositions.Type: ApplicationFiled: September 10, 2012Publication date: October 23, 2014Applicant: OSSDSIGN ABInventors: Håkan Engqvist, Jonas Åberg
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Publication number: 20140265015Abstract: A method for preparing bones of cerebral cranium, including: a) selecting polyetheretherketone (PEEK) as a raw material according to data obtained by computed tomography (CT) of a patient; b) heating the PEEK material in a heating device to reach a softening point of 260°±10°; c) hot pressing the heated PEEK material obtained in step b) in a forming die, cooling and shaping the PEEK material to yield a blank; d) curing the blank, and placing the blank in a thermostat for removal of internal stress and resilience; e) removing surface crystals and impurities of the blank resulting from the hot pressing; f) mechanically processing the blank according to the CT data of the patient to yield a product having desired size and shape; and g) washing, disinfecting, and packaging the product.Type: ApplicationFiled: May 29, 2014Publication date: September 18, 2014Applicant: WUHAN CONSTANT SCIENCE AND TECHNOLOGY LTD.Inventor: Dengfeng HUANG
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Patent number: 8806821Abstract: A tower foundation (10) has a base slab (11), pillar slabs (12), and a crown stab (13), all of which are made of precast concrete structures. The pillar slab is formed with a unitary mold (40) with one continuous internal chamber (41) which includes multiple leg cavities (42) which have three sidewalls (43) that are all angled outwardly from the bottom of the mold to the top of the mold. The mold produces a pillar slab which has multiple legs (12?) wherein each of the three sidewall surface (46) of each leg is set at an angle a.Type: GrantFiled: July 2, 2013Date of Patent: August 19, 2014Inventor: Franklin Brown
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Patent number: 8790554Abstract: A method of preparing meta-aramid fibers includes the operations of polymerization, neutralization and spinning using m-phenylenediamine and isophthaloyl chloride as raw materials, wherein the neutralizing agent is added in an amount that is sufficient only for neutralizing a part of hydrogen chloride, so that the resultant spin dope of polyisophthaloyl metaphenylene diamine contains salts produced by the neutralization reaction and a part of unneutralized hydrogen chloride. The method of the invention has a short production line with reduced amount of the neutralizing agent, therefore both the costs of raw materials and the production energy consumption are saved. The fibers prepared according to the method of the invention have reduced gray scale to improve the electrical insulation properties of the fibers.Type: GrantFiled: September 5, 2011Date of Patent: July 29, 2014Inventor: Zhou Zhong
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Patent number: 8784710Abstract: A method of making an expanded polytetrafluoroethylene (ePTFE) membrane including the steps of: providing an unsintered or partially sintered ePTFE membrane; matting the unsintered or partially sintered ePTFE membrane; and immediately thereafter, sintering the matted ePTFE membrane. A method for making ePTFE tubes includes the steps of: providing an unsintered or partially sintered ePTFE membrane; wrapping the ePTFE membrane around a mandrel or form tool to form an ePTFE tube; matting the ePTFE tube; immediately thereafter, sintering the matted ePTFE tube; and removing the sintered ePTFE tube from the mandrel or form tool.Type: GrantFiled: March 18, 2010Date of Patent: July 22, 2014Assignee: Phillips Scientific Inc.Inventors: Douglas R. Hansen, James V. Phillips
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Publication number: 20140182908Abstract: This invention relates to an epoxy resin composition for an insulating film, an insulating film, and a printed circuit board including the same. Particularly in a printed circuit board using a build-up process, a skin layer and a roughness are formed on the surface of the insulating film using different curing starting temperatures, so that peel strength can be enhanced, thus enabling the formation of a fine pattern, and also, a coefficient of thermal expansion of the insulating film is low, thus preventing the deformation of the film.Type: ApplicationFiled: March 15, 2013Publication date: July 3, 2014Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Ji Hye Shim, Yong Jin Park, Hwa Young Lee, Hyung Mi Jung
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Publication number: 20140134088Abstract: A porous adsorbent structure that is capable of a reversible adsorption and desorption cycle for capturing CO2 from a gas mixture comprises a support matrix formed by a web of surface modified cellulose nanofibers. The support matrix has a porosity of at least 20%. The surface modified cellulose nanofibers consist of cellulose nanofibers having a diameter of about 4 nm to about 1000 nm and a length of 100 nm to 1 mm that are covered with a coupling agent being covalently bound to the surface thereof. The coupling agent comprises at least one monoalkyldialkoxyaminosilane.Type: ApplicationFiled: June 6, 2012Publication date: May 15, 2014Inventors: Christoph Gebald, Tanja Zimmermann, Philippe Tingaut
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Patent number: 8636850Abstract: Some demonstrative embodiments of the invention include an apparatus and a method for removing the support structures from three-dimensional objects, in which the support removal is carried out using techniques that decrease the duration of the support removal process and increase the quality of the final three-dimensional objects. This method also ensures the safe removal of the support structures without damage to the three-dimensional object.Type: GrantFiled: May 22, 2008Date of Patent: January 28, 2014Assignee: Stratasys Ltd.Inventors: Vladimir Narovlyansky, Avi Cohen, Beverley Soffer
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Patent number: 8623245Abstract: A colored high strength polyethylene fiber, preparation method and use thereof are provided, which are in the high molecular material field. The surface of said high strength polyethylene fiber is chromatic, grey or black. The strength of said high strength polyethylene fiber is 15-50 g/d, its modulus is 400-2000 g/d. The product of the present invention is colored, so it can be well applied to civil and military field. The preparation method of present invention has some advantages that technological process is simple, production efficiency is high, cost of production is low, performance of made fiber is excellent, and use-cost is reduced, compared with the prior art.Type: GrantFiled: July 14, 2008Date of Patent: January 7, 2014Assignee: Shandong ICD High Performance Fibres Co., Ltd.Inventor: Yi Ren
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Patent number: 8608998Abstract: A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through at least one infrared solvent stripping station wherein infrared radiation irradiates the nonwoven web in the absence of a solvent stripping fluid impinging on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw.Type: GrantFiled: July 9, 2008Date of Patent: December 17, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Christel Berta Laxton, B. Lynne Wiseman, Christopher William Newton, Simon Frisk
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Patent number: 8501068Abstract: A novel oxide material (MIN-I) comprising YO2; and X2O3, wherein Y is a tetravalent element and X is a trivalent element, wherein X/Y=O or Y/X=30 to 100 is provided. Surprisingly, MIN-I can be reversibly deswollen. MIN-I can further be combined with a polymer to produce a nanocomposite, depolymerized to produce predominantly fully exfoliated layers (MIN-2), and pillared to produce a pillared oxide material (MIN-3), analogous to MCM-36. The materials are useful in a wide range of applications, such as catalysts, thin films, membranes, and coatings.Type: GrantFiled: November 4, 2008Date of Patent: August 6, 2013Assignees: Regents of the University of Minnesota, Georgia Institute of TechnologyInventors: Michael Tsapatsis, Sudeep Maheshwari, Frank S. Bates, William J. Koros
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Patent number: 8414804Abstract: The present invention relates to aqueous processes for the production of silicone hydrogel contact lenses.Type: GrantFiled: March 23, 2006Date of Patent: April 9, 2013Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Azaam Alli, Diana Zanini, James D. Ford, Shivkumar Mahadevan, Kristy Canavan, David C. Turner
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Patent number: 8394306Abstract: A method for producing a thermoplastic resin micro-porous film wherein a thermoplastic resin and a solvent (A) are melted and kneaded together to prepare a solution, the solution is extruded and cooled to prepare a formed product in a gel state, and the residual solvent (A) is removed from the formed product, characterized in that in the step of removing the solvent (A) use is made of a non-aqueous solvent (B) which is compatible with the solvent (A) and not compatible with the thermoplastic resin, and has a boiling point of 100° or higher and a flashing point of 0° or higher. The use of the non-aqueous solvent (B) provides a production method which allows the removal of a solvent with good efficiency and also with the reduction of a fear of environmental pollution and catching fire.Type: GrantFiled: June 28, 2001Date of Patent: March 12, 2013Assignee: Toray Battery Separator Film Co., Ltd.Inventors: Mitsuhiro Nishida, Kohtaro Kimishima, Sadakatsu Suzuki
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Patent number: 8366988Abstract: The present invention provides a “spunbond wetlaid method for producing non-woven fabrics from natural cellulose” using pulp as raw material and N-methylmorpholine N-oxide (NMMO) as solvent for dissolving into dope. Then, the dope is extruded out of a spinneret to form filament bundle by spunbond method. The dope is extruded out of a spinneret bank of grouped spinnerets to form filament bundle for further stretching process under quench condition. The filament bundle is coagulated with regeneration in a coagulating solution. The coagulated filament bundle is rapidly stretched under high pressure by an air draw-off machine. The stretched filament bundle is collected and stacked on a collecting net as web nonwoven. After post treatments of water rinsing, hydro-entangled needle punching, drying, winding-up and the like have been orderly applied then final product of nonwoven fabrics with continuous filament are produced from natural cellulose.Type: GrantFiled: September 1, 2010Date of Patent: February 5, 2013Assignee: Acelon Chemical and Fiber CorporationInventors: Wen-Tung Chou, Ming-Yi Lai, Kun-Shan Huang
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Publication number: 20120256342Abstract: A method of producing a seal member includes: a mixing step of mixing an elastic material and fine particles using a kneading device, so as to form a mixed material; a molding step of charging the mixed material into a molding die, and forming an elastic molded piece having a shape corresponding to that of a molded seal of the seal member; and a particle removing step of removing the fine particles present on a surface of the elastic molded piece, so as to form the molded seal.Type: ApplicationFiled: March 15, 2012Publication date: October 11, 2012Applicant: JTEKT CORPORATIONInventor: Yoshinori MASUDA
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Patent number: 8197743Abstract: A preferred embodiment of the present invention provides a method and system for building cost-efficient biocompatible hydrogel constructs using stereolithography. Hydrogel constructs may be used in, for example, multi-lumen nerve regeneration conduits and other tissue engineering scaffolds with embedded channel architecture that facilitate tissue regeneration through possible incorporation of precisely located bioactive agents, cells, and other desired inert and/or active chemical agents and devices. Another preferred embodiment of the present invention provides a method of fabricating a hydrogel construct comprising: solidifying a first solution into a first construct layer with a first energy dosage using stereolithography, the first solution comprising: a first polymer; and a first photoinitiator, wherein the first polymer and first photoinitiator are of a first concentration.Type: GrantFiled: August 24, 2010Date of Patent: June 12, 2012Assignees: Keck Graduate Institute, The Board of Regents of the University of Texas SystemsInventors: Ryan Wicker, Francisco Medina, Karina Arcaute, Luis Ochoa, Christopher Elkins, Brenda Mann
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Patent number: 8163212Abstract: The present invention provides a process for producing pellet of EVOH comprising the steps of introducing an EVOH solution containing alcohol into an apparatus, contacting the solution with water in the apparatus to let out the alcohol with water and then letting out an EVOH hydrous composition from the above-mentioned apparatus (step 1); cutting the EVOH hydrous composition let out therefrom to obtain EVOH hydrous composition pellets (step 2); introducing the obtained EVOH hydrous composition pellets into a dryer to reduce a water content thereof (step 3); melt-kneading the pellets, whose water content is reduced, in an extruder (step 4); and cutting EVOH discharged from the extruder to obtain the pellet of EVOH (step 5). Thus, the EVOH hydrous composition obtained by removing alcohol without deteriorating the environment can be efficiently dried, and pellets having less thermal degradation in drying and a uniform shape can be obtained.Type: GrantFiled: July 14, 2003Date of Patent: April 24, 2012Assignee: Kuraray Co., Ltd.Inventors: Naohiko Uchiumi, Noriyuki Kida, Hiroyuki Shimo, Kaoru Ikeda
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Patent number: 8163213Abstract: A method of reducing crimp in woven sailcloth comprising applying heat to warp yarn or fill yarn prior to the yarns being woven into fabric and a method of making a sail comprising assembling panels of sailcloth comprising warp yarns and fill yarns, wherein at least one panel of sailcloth is prepared by applying heat to the warp yarn or the fill yarn prior to the yarns being weaved into fabric.Type: GrantFiled: December 10, 2008Date of Patent: April 24, 2012Assignee: Challenge Sailcloth Inc.Inventor: Terry Lee Cronburg
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Patent number: 8160486Abstract: A blade for an electrophotographic apparatus is provided which is prevented from turning up, achieves wear resistance, and has excellent cleaning properties. The blade is composed of a support member and a blade member formed of a thermosetting polyurethane elastomer, which are joined together. The blade member has a structure in which a nitrogen concentration continuously increases from the inside of a contact part coming into contact with a counterpart member toward the surface of the contact part.Type: GrantFiled: July 2, 2008Date of Patent: April 17, 2012Assignee: Canon Kasei Kabushiki KaishaInventors: Shoji Inoue, Toshiro Uchida, Taku Hatanaka
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Patent number: 8088313Abstract: A measured amount of a material that is crosslinkable by impingement of a suitable form of energy, especially UV light, is introduced into a two-part mould of which the cavity determines the shape of a moulding to be produced. The two mould halves are held a small distance from one another so that a thin annular gap is formed between them, which gap is in communication with the mould cavity and through which gap excess material can escape. The crosslinking is triggered by impingement of the selected form of energy, the impingement being spatially restricted to the cavity by suitable masking so that material disposed outside the mould cavity is not crosslinked. In that manner mouldings are obtained that do not require subsequent mechanical processing, and the mould is reusable. The process is especially, but not, however, exclusively, suitable for the manufacture of contact lenses.Type: GrantFiled: June 9, 2004Date of Patent: January 3, 2012Assignee: Novartis AGInventors: Peter Hagmann, Sharla Borghorst, John Golby, Peter Herbrechtsmeier, Otto Kretzschmar, Bernhard Seiferling, Norbert Söllner, Beat Müller
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Patent number: 7938993Abstract: An improved process for the preparation of a cellulose solution for spinning of fibers, filaments or films therefrom comprising the steps of: a) activating cellulose in a mixture containing said cellulose, tertiary amine oxide solvent and water for a period sufficient to allow a swelling of the cellulose by introduction therein of water present in said mixtures, the temperature of said activation step and concentration of solvent being such that the solvent is not converted into its monohydrate state during the step of activation; b) the cellulose mixture being subjected to the steps of dissolution of cellulose in the solvent by heating for removal of water so as to convert the solvent into at least its monohydrate form so as to cause a dissolution.Type: GrantFiled: November 6, 2008Date of Patent: May 10, 2011Assignee: Birla Research Institute for Applied SciencesInventors: Koutu Brij Bhushan, Chand Suresh Salgiya
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Patent number: 7867421Abstract: The invention relates to a method for the production of composite fibers with an increased content of colloidal particles, made from a pre-fiber, comprising a polymeric binder and colloidal particles, during which the chemical structure of the polymeric binder is degraded at a temperature of the order of ambient temperature such as to at least partially eliminate the above. The invention further relates to a fiber comprising a polymeric binder and colloidal particles, combining an excellent mechanical strength and a content of colloidal particles greater than 70% by mass.Type: GrantFiled: April 28, 2004Date of Patent: January 11, 2011Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Universite des Sciences Et Technologies (Bordeaux 1)Inventors: Philippe Poulin, Stephane Badaire, Cecile Zakri, Maryse-Marie-Therese Maugey
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Publication number: 20100289177Abstract: The present invention relates to a process for the production of cellulosic moulded bodies according to the amine-oxide process, comprising the following steps: moulding a solution of cellulose in an aqueous tertiary amine oxide precipitating the moulded solution washing the moulded body thus obtained and drying the moulded body. The process according to the invention is characterized in that a chitosonium polymer is added to the solution of the cellulose and/or to a precursor of said solution and/or the moulded body is treated with a chitosonium polymer prior to drying, with the chitosonium polymer being essentially completely soluble in a standard dope.Type: ApplicationFiled: June 17, 2010Publication date: November 18, 2010Inventors: Sigrid Redlinger, Gerhard Reiter, Heinrich Firgo
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Patent number: 7811507Abstract: A hydrophilic semipermeable hollow-fibre membrane for blood treatment, with an integrally asymmetric structure based on a synthetic polymer. The hollow-fiber membrane possess on its inner surface a separating layer and an adjoining open-pored supporting layer, and has an ultrafiltration rate in albumin solution of 5 to ?25 ml/(h·m2·mmHg). The hollow fiber membrane is free from pore-stabilizing additives and has a maximum sieving coefficient for albumin of 0.005 and a sieving coefficient of cytochrome c that satisfies the equation SCcc?5·10?5·UFRAlb3?0.004·UFRAlb2+0.1081·UFRAlb?0.25.Type: GrantFiled: February 15, 2005Date of Patent: October 12, 2010Assignee: Membrana GmbHInventors: Friedbert Wechs, Arne Gehlen, Bodo Von Harten, Richard Kruger, Oliver Schuster
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Patent number: 7811496Abstract: Method for making ceramic particles. Embodiments of ceramic particles made according to the present invention can be are particularly useful as abrasive particles.Type: GrantFiled: February 5, 2003Date of Patent: October 12, 2010Assignee: 3M Innovative Properties CompanyInventors: Ahmet Celikkaya, Thomas J. Anderson
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Patent number: 7780897Abstract: A preferred embodiment of the present invention provides a method and system for building cost-efficient biocompatible hydrogel constructs using stereolithography. Hydrogel constructs may be used in, for example, multi-lumen nerve regeneration conduits and other tissue engineering scaffolds with embedded channel architecture that facilitate tissue regeneration through possible incorporation of precisely located bioactive agents, cells, and other desired inert and/or active chemical agents and devices. Another preferred embodiment of the present invention provides a method of fabricating a hydrogel construct comprising: solidifying a first solution into a first construct layer with a first energy dosage using stereolithography, the first solution comprising: a first polymer; and a first photoinitiator, wherein the first polymer and first photoinitiator are of a first concentration.Type: GrantFiled: April 22, 2005Date of Patent: August 24, 2010Assignees: Board of Regents, The University of Texas System, Keck Graduate InstituteInventors: Ryan Wicker, Francisco Medina, Karina Arcaute, Luis Ochoa, Christopher Elkins, Brenda Mann
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Publication number: 20100162892Abstract: The present invention relates to a membrane wherein said membrane comprises a continuous non-porous layer comprising a polymerized composition that comprised prior to polymerization at least one type of compound having a molecular weight of at least 1500 Da and comprising at least 75 weight % of oxyethylene groups and at least two polymerizable groups each comprising a non-substituted vinyl group. The invention further relates to the use of this membrane for separating polar gases and vapors.Type: ApplicationFiled: May 26, 2008Publication date: July 1, 2010Applicant: FUJIFILM MANUFACTURING EUROPE B.V.Inventors: Akira Kase, Yujiro Itami
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Patent number: 7731881Abstract: A method for making a fog resistant thermoplastic article includes conditioning a thermoplastic article by exposing it to an aqueous environment sufficient to result in fog resistance.Type: GrantFiled: December 30, 2003Date of Patent: June 8, 2010Assignee: Sabic Innovative Plastics IP B.V.Inventors: Jennifer Dean, Theodorus Lambertus Hoeks
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Publication number: 20100080985Abstract: Disclosed is a biaxially stretched polyamide resin film which is a biaxially stretched film having a layer of a polyamide resin with caproamide as a repeating unit thereof and has an amount of the caprolactam monomer extracted from the biaxially stretched polyamide resin film of 0.1% by mass or less, and also disclosed is a packaging material including the biaxially stretched polyamide resin film.Type: ApplicationFiled: December 17, 2007Publication date: April 1, 2010Inventors: Atsuko Noda, Kiwamu Yuki, Nobuhiro Tanaka, Chiemi Nishitani, Hiroshi Sakakura
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Publication number: 20100055438Abstract: The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.Type: ApplicationFiled: November 3, 2009Publication date: March 4, 2010Applicant: TRUSTEES OF TUFTS COLLEGEInventors: David L. Kaplan, Ung-Jin Kim, Jaehyung Park, Hyoung-Joon Jin
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Patent number: 7645520Abstract: The present invention provides an endless belt containing a conductive agent and a polyimide resin whose imidation ratio at an outer circumference surface of the belt and that at an inner circumference surface of the belt are mutually different, and a method of producing the endless belt, an intermediate transfer belt having the endless belt, and an image forming apparatus having the endless belt.Type: GrantFiled: June 19, 2007Date of Patent: January 12, 2010Assignee: Fuji Xerox Co., Ltd.Inventor: Tsuyoshi Miyamoto
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Publication number: 20100000942Abstract: A method of improving the water permeability and/or cleaning a porous polymeric membrane (such as a microfiltration or ultrafiltration membrane comprising the step of contacting said a porous polymeric membrane with a source of monopersulfate and a halide ion, such as chloride and optionally a base. The source of monopersulfate may be potassium monopersulfate in conjunction with potassium hydrogen sulfate and potassium sulfate, ie a triple salt of formula 2KHSO5.KHSO4.K2SO4.Type: ApplicationFiled: July 13, 2007Publication date: January 7, 2010Inventors: Heinz Joachim Muller, Dongliang Wang, Andrew John Inglis
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Patent number: 7625514Abstract: A method for modifying a surface of a polymer such as a thermoplastic resin is provided, in which a supercritical fluid, especially carbon dioxide in a supercritical state is used as a solvent, and the polymer surface is further converted to have highly advanced function or high performance in a short period of time. In the method for modifying the polymer surface of the present invention, a solute is previously applied to the polymer surface. Accordingly, the solute can be permeated into the surface of the polymer swelled by the contact of the supercritical fluid. When this method is used, it is possible to permeate the solute into the polymer at a high concentration in a short period of time.Type: GrantFiled: April 22, 2005Date of Patent: December 1, 2009Assignee: Hitachi Maxell, Ltd.Inventors: Atsushi Yusa, Masahiro Oshima
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Patent number: 7592415Abstract: A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through a solvent stripping zone wherein infrared radiation irradiates the nonwoven web and a solvent stripping fluid impinges on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw.Type: GrantFiled: December 18, 2006Date of Patent: September 22, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Joseph Brian Hovanec, Simon Frisk