Algin Or Derivative Patents (Class 524/28)
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Patent number: 11320570Abstract: A wavelength converting device includes a diffused-reflecting layer, a substrate, and a photoluminescence layer. The diffused-reflecting layer has a first surface and a second surface facing away from the first surface, and the diffused-reflecting layer includes a hydrophilic binder and a lipophilic binder. The substrate is on the first surface of the diffused-reflecting layer. The photoluminescence layer is on the second surface of the diffused-reflecting layer.Type: GrantFiled: November 23, 2020Date of Patent: May 3, 2022Assignee: DELTA ELECTRONICS, INC.Inventors: Jih-Chi Li, Li-Cheng Yang, Wen-Cheng Huang
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Patent number: 11285240Abstract: Embolic particles are described. The particles are reaction products of a prepolymer solution including at least one polyether macromer and an appropriate monomer.Type: GrantFiled: September 2, 2020Date of Patent: March 29, 2022Assignee: MicroVention, Inc.Inventors: Gregory M. Cruise, Steve Plotkin, Xinping Wu
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Patent number: 10792390Abstract: Embolic particles are described. The particles are reaction products of a prepolymer solution including at least one polyether macromer and an appropriate monomer.Type: GrantFiled: December 17, 2019Date of Patent: October 6, 2020Assignee: MicroVention, Inc.Inventors: Gregory M. Cruise, Steve Plotkin, Xinping Wu
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Patent number: 9907880Abstract: Embolic particles are described comprising a treated polymer particle. The particles are reaction products of a prepolymer solution including at least one polyether macromer and an appropriate monomer. The treated polymer particles can have a first diameter that is smaller than a second diameter, wherein the second diameter is achieved when the treated polymer particle is subjected to a physiological condition. Methods of making and using these polymer particles are also described.Type: GrantFiled: March 25, 2016Date of Patent: March 6, 2018Assignee: MicroVention, Inc.Inventors: Gregory M. Cruise, Steve Plotkin, Xinping Wu
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Patent number: 9556328Abstract: The present invention relates to biodegradable hydrophobic composite materials and a process for the preparation of said hydrophobic biodegradable materials from the seaweed polysaccharides through grafting reaction with vinylated monomers e.g. vinyl acetate. The said composites can be used as a substitute for synthetic ropes for varied applications including seaweed cultivation in the open sea. The results of cultivation experiments showed that ropes are suitable for cultivation of seaweeds in the sea environment, and exhibit higher biomass yield as compared to synthetic ropes. The prepared composites are very flexible and can be used for making handles for carry bags and for the preparation of biodegradable designs, bowls, pots, jars, gift items, stud caps and bracelets.Type: GrantFiled: October 11, 2013Date of Patent: January 31, 2017Assignee: Council of Scientific & Industrial ResearchInventors: Ramavatar Meena, Pushpito Kumar Ghosh, Dharmesh Chejara, Karuppanan Eswaran, Arup Kumar Siddhanta, Kamalesh Prasad, Jai Prakash Chaudhary
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Patent number: 9463145Abstract: Denture adhesive compositions having good hold and improved taste containing a salt of a copolymer of alkyl vinyl ether-maleic acid or anhydride. Compositions containing from about 25% to about 45%, by weight of the composition, of a salt of a copolymer of alkyl vinyl ether-maleic acid or anhydride containing a cationic salt function containing: i) from about 60% to about 72% cations selected from calcium, strontium, magnesium, or combinations thereof; ii) from 0% to about 10% sodium cations; iii) less than 1% zinc cations; and iv) from about 25% to about 40% of a free acid component; and further containing from about 15% to about 25%, by weight of the composition of a carboxymethyl cellulose having a molecular weight of from about 200,000 to about 1,000,000 daltons; and a carrier. Methods of improving the adhesion of dentures to the oral cavity by applying such compositions to dentures, the oral cavity, or both, and thereafter securing the denture to the ridge or palate of the oral cavity.Type: GrantFiled: March 14, 2014Date of Patent: October 11, 2016Assignee: THE PROCTER & GAMBLE COMPANYInventors: Jayanth Rajaiah, Robert Scott Leonard, Rafael Edmundo Bras, Franco Medeiros
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Publication number: 20150148457Abstract: This invention relates to a process for preparing multi-color dispersions and the multi-color dispersions made thereof.Type: ApplicationFiled: June 6, 2012Publication date: May 28, 2015Applicants: Rohm and Haas Company, Dow Global Technologies LLCInventors: Dong Yun, Yujiang Wang, Jian Sun, Peng Xu, Fei Guo
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Patent number: 8877842Abstract: Binder for granular and/or fibrous substrates.Type: GrantFiled: April 2, 2012Date of Patent: November 4, 2014Assignee: BASF SEInventors: Christian Krueger, Ulrich Schuetze, Oliver Labisch
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Publication number: 20140306187Abstract: An adhesive includes a polymer matrix, and a plurality of adhesive capsules in the polymer matrix, wherein each of the adhesive capsules includes a shell, configured to shatter under pressure, and an adhesive polymer in the shell.Type: ApplicationFiled: July 30, 2013Publication date: October 16, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jae-Hyun Kim, Myung-Soo Huh
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Patent number: 8808442Abstract: Hydraulically applied fiber matrix compositions for use on soils include a water-soluble, crosslinkable, hydratable gum, and a compound capable of crosslinking the water-soluble, crosslinkable, hydratable gum. The compositions may further include hydrocolloids and mulch. The hydraulically applied fiber matrix compositions are useful for hydroseeding and soil stabilization.Type: GrantFiled: November 9, 2010Date of Patent: August 19, 2014Assignee: Chemstar Products CompanyInventors: Cory J. Bernu, Jeremy L. Bachman, Paul F. Werler
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Patent number: 8741990Abstract: The invention relates to an adhesive composition comprising hydrophilic silicone elastomers and hydrophobic silicone elastomers and optionally water absorbent material, wherein the ratio between the hydrophilic silicone elastomers and the hydrophobic silicone elastomers is from 95:5 to 5:95. The adhesive is suited for medical use due to its skin-friendliness. The invention further relates to a medical device comprising said adhesive composition.Type: GrantFiled: February 22, 2012Date of Patent: June 3, 2014Assignee: Coloplast A/SInventor: Chaabane Bougherara
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Patent number: 8691003Abstract: An indicator is useful for detecting pressure points on a denture. The indicator is made of a composition that easily adheres to oral mucosa, has a proper viscosity in an oral cavity environment, can be properly spread between an oral mucosa surface and a denture base, and easily specifies an affected part. The composition includes a fatty acid ester having a melting point of 30 to 50° C., a water-soluble high polymer, and a metal oxide. Preferably, the fatty acid is 40 to 95% by weight of the composition, the water-soluble high polymer is 1 to 59% by weight of the composition, and the metal oxide is 0.1 to 50% by weight of the composition.Type: GrantFiled: September 29, 2011Date of Patent: April 8, 2014Assignee: GC CorporationInventors: Yutaka Shinozaki, Hiroshi Kamohara
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Patent number: 8641815Abstract: A precursor batch composition that can be used to make porous ceramic articles is provided. In addition to a cellulosic binder and an aqueous solvent, the batch composition includes a polysaccharide gum. The batch composition may optionally include a linear water soluble polymer having a molecular weight of at least one million Daltons.Type: GrantFiled: February 28, 2011Date of Patent: February 4, 2014Assignee: Corning IncorporatedInventor: Gregg William Crume
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Publication number: 20140010858Abstract: The present invention is directed to polymeric compositions comprising a biodegradable copolymer that possesses shape-memory properties and implantable devices (e.g., drug-delivery stents) formed of materials (e.g., a coating) containing such compositions. The polymeric compositions can also contain at least one non-fouling moiety, at least additional biocompatible polymer, at least one biobeneficial material, at least one bioactive agent, or a combination thereof. The polymeric compositions are formulated to possess good mechanical, physical and biological properties. Moreover, implantable devices formed of materials comprising such compositions can be delivered to the treatment site in a conveniently compressed size and then can expand to dimensions appropriate for their medical functions.Type: ApplicationFiled: May 28, 2013Publication date: January 9, 2014Applicant: Abbott Cardiovascular Systems Inc.Inventors: John J. Stankus, O. Mikael Trollsas, Michael H. Ngo
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Publication number: 20130071588Abstract: This invention relates to an aliphatic-aromatic copolyester characterised in that it has appreciable workability properties even when mixed with other polymers, appreciable toughness and high values for ultimate tensile strength and elastic modulus. This invention also relates to mixtures of the said copolyester with other polymers.Type: ApplicationFiled: May 24, 2011Publication date: March 21, 2013Applicant: NOVAMONT S.p.A.Inventors: Catia Bastioli, Giampietro Borsotti, Luigi Capuzzi, Tiziana Milizia, Roberto Vallero
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Publication number: 20130030089Abstract: Process for preparing a thermoplastic resin composition containing an aromatic polycarbonate resin which may include a thermoplastic resin other than the aromatic polycarbonate resin, a granular talc, and optionally a rubber polymer, a flame retardant or a fluorinated polyolefin. The granular talc has a particle size in which a proportion of a 500 ?m-mesh screen residue thereof is not less than 55% by weight.Type: ApplicationFiled: October 1, 2012Publication date: January 31, 2013Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATIONInventor: MITSUBISHI ENGINEERING-PLASTICS CORPOR
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Publication number: 20120252936Abstract: Binder for granular and/or fibrous substratesType: ApplicationFiled: April 2, 2012Publication date: October 4, 2012Applicant: BASF SEInventors: Christian Krüger, Ulrich Schütze, Oliver Labisch
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Publication number: 20120225978Abstract: Binder for granular and/or fibrous substratesType: ApplicationFiled: February 29, 2012Publication date: September 6, 2012Applicant: BASF SEInventors: Christian Krüger, Alexander Centner, Oliver Labisch
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Publication number: 20120220698Abstract: Biodegradable aliphatic/aromatic copolyester comprising: A) an acid component comprising repeating units of: 1) 49 to 63 mol % of an aromatic carboxylic acid; 2) 51 to 37 mol % of an carboxylic acid, at least 50% of which is brassylic acid; B) a diol component; said copolyester being disintegrated according to the Standard ISO 20200 in 90 days.Type: ApplicationFiled: May 7, 2012Publication date: August 30, 2012Applicant: Novamont S.p.A.Inventors: Catia Bastioli, Tiziana Milizia, Giovanni Floridi, Andrea Scaffidi Lallaro, Giandomenico Cella, Maurizio Tosin
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Publication number: 20120220687Abstract: Biodegradable aliphatic/aromatic copolyester comprising 49 to 66 mol % of an aromatic polyfunctional acid; 51 to 34 mol % of an aliphatic acid, at least 70% of which is sebacic acid; and butandiol; and blends containing such copolyester.Type: ApplicationFiled: May 7, 2012Publication date: August 30, 2012Applicant: Novamont S.p.A.Inventors: Catia BASTIOLI, Tiziana MILIZIA, Giovanni FLORIDI, Andrea Scaffidi LALLARO, Giandomenico CELLA, Maurizio TOSIN
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Publication number: 20120220680Abstract: The present invention relates to biodegradable aliphatic-aromatic polyesters obtained from aliphatic dicarboxylic acids, polyfunctional aromatic acids and diols, wherein the polyfunctional aromatic acids are constituted by mixtures of acids of renewable and synthetic origin.Type: ApplicationFiled: November 5, 2010Publication date: August 30, 2012Applicant: Novamont S.P.A.Inventors: Catia Bastioli, Giampietro Borsotti, Luigi Capuzzi, Gian Tomaso Masala, Tiziana Milizia, Roberto Vallero
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Patent number: 8247478Abstract: A thermoplastic resin composition of the present invention has high impact resistance, not lowering the weather resistance thereof, even though the amount of an impact resistance improver added thereto is small. The thermoplastic resin composition contains 100 parts by weight of (A) a thermoplastic resin and from 0.5 to 20 parts by weight of (B) a graft copolymer, wherein the graft copolymer (B) contains from 70% to 99% by weight of a crosslinked core (b2) prepared through polymerization of a monomer for the core (b2), containing 70% by weight or more of an acrylate, in the presence of from 0.5% to 20% by weight of a non-crosslinked seed (b1) having a weight-average molecular weight of 40,000 or less, and from 0.5% to 10% by weight of a shell (b3) prepared through polymerization of a monomer for the shell (b3) containing 50% by weight or more of a methacrylate, and the thermoplastic composition further contains from 0.01 to 3.Type: GrantFiled: February 7, 2007Date of Patent: August 21, 2012Assignee: Kaneka CorporationInventor: Toru Terada
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Publication number: 20120149810Abstract: The invention relates to an adhesive composition comprising hydrophilic silicone elastomers and hydrophobic silicone elastomers and optionally water absorbent material, wherein the ratio between the hydrophilic silicone elastomers and the hydrophobic silicone elastomers is from 95:5 to 5:95. The adhesive is suited for medical use due to its skin-friendliness. The invention further relates to a medical device comprising said adhesive composition.Type: ApplicationFiled: February 22, 2012Publication date: June 14, 2012Inventor: Chaabane BOUGHERARA
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Publication number: 20120115993Abstract: The present invention relates to a pulverulent adhesive for textile reinforcing inserts, which is dispersible in water, for the production of reinforced rubber products. The adhesive thereby comprises an at least partially capped, low-molecular isocyanate, a wetting agent, a binder and also possibly further additives.Type: ApplicationFiled: November 7, 2011Publication date: May 10, 2012Applicant: EMS-PATENT AGInventor: Andreas Kaplan
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Patent number: 8124675Abstract: The invention relates to an adhesive composition comprising hydrophilic silicone elastomers and hydrophobic silicone elastomers and optionally water absorbent material, wherein the ratio between the hydrophilic silicone elastomers and the hydrophobic silicone elastomers is from 95:5 to 5:95. The adhesive is suited for medical use due to its skin-friendliness. The invention further relates to a medical device comprising said adhesive composition.Type: GrantFiled: October 15, 2010Date of Patent: February 28, 2012Assignee: Coloplast A/SInventor: Chaabane Bougherara
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Patent number: 7910641Abstract: The invention relates to pH modulated films and methods of their preparation. The film compositions include at least one component having a non-neutral pH when combined with water; and a pH modulated polymer system selected to reduce or prevent synerisis when combined with the non-neutral component in combination with aqueous media. The films demonstrate a non-self-aggregating uniform heterogeneity. Desirably, the films disintegrate in water and may be formed by a controlled drying process, extrusion process, or other process that maintains the required uniformity of the film.Type: GrantFiled: December 14, 2006Date of Patent: March 22, 2011Assignee: Monosol Rx, LLCInventor: Garry L. Myers
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Patent number: 7906569Abstract: The present invention provides a method for production of a molded article comprising a plant-derived composite material in which a plant-derived material is evenly dispersed and a plant-derived composite material molded article prepared therewith, and a method for production of a plant-derived composite material in which a plant-derived material is evenly dispersed and a plant-derived composite material prepared therewith. The present method for production of a molded article is a method for producing a molded article composed of a plant-derived composite material comprising a plant-derived material (e.g., a kenaf core) and a thermoplastic resin (e.g.Type: GrantFiled: September 21, 2007Date of Patent: March 15, 2011Assignee: Toyota Boshoku Kabushiki KaishaInventor: Masanori Hashiba
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Publication number: 20110034847Abstract: The invention relates to an adhesive composition comprising hydrophilic silicone elastomers and hydrophobic silicone elastomers and optionally water absorbent material, wherein the ratio between the hydrophilic silicone elastomers and the hydrophobic silicone elastomers is from 95:5 to 5:95. The adhesive is suited for medical use due to its skin-friendliness. The invention further relates to a medical device comprising said adhesive composition.Type: ApplicationFiled: October 15, 2010Publication date: February 10, 2011Inventor: Chaabane Bougherara
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Patent number: 7829611Abstract: A curable binder composition comprising an emulsion polymer, an extender and a hydryoxyamide.Type: GrantFiled: June 19, 2007Date of Patent: November 9, 2010Assignee: Rohm and Haas CompanyInventor: Michael D. Kelly
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Patent number: 7819963Abstract: To provide a dental alginate impression material composition capable of solving a problem that the permeation rate of water with respect to the whole powder of an alginate impression material is slow at the time of use so that a kneading time is long and a sufficient operational time cannot be secured, and a problem that a kneaded material drops into a throat due to aging of the material at the time of taking an impression, the dental alginate impression material composition comprises 0.001 to 1% by weight of one or more kinds selected from oils mainly consisting of a fatty acid and an ester of alcohol, waxes mainly consisting of a fatty acid and an ester of glycerin, and a fatty acid ester; 0.01 to 10% by weight of a surfactant; and 0.01 to 10% by weight of one or more kinds of specific polysaccharides.Type: GrantFiled: August 29, 2007Date of Patent: October 26, 2010Assignee: GC CorporationInventors: Hiroshi Kamohara, Hiroki Morita
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Patent number: 7754791Abstract: A substantially non-elastic incompressible composition, which substantially does not quickly self-level under standard operating conditions, includes: a suspending agent which reacts substantially as a solid when subjected to forces below a critical force, and which becomes substantially flowable when subjected to forces above said critical force; ceramic microparticulates dispersed within the suspending agent; flexible-walled microparticulates dispersed within the suspending agent; and celled macroparticulates dispersed within the suspending agent. The composition provides an incident energy absorbing property. The incident energy may include sound energy, and the microparticulates and macroparticulates may convert some of the sound energy into heat, or may diffract the sound energy.Type: GrantFiled: December 29, 2006Date of Patent: July 13, 2010Assignee: Sereflex Group LLCInventor: Joel Sereboff
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Patent number: 7728055Abstract: An object of the present invention is to provide a new granulating process which can recover desired coagulated latex particles with a significantly excellent yield, and can suppress secondary coagulation under the condition having a higher temperature than a softening point of a polymer, without deteriorating the original quality of the polymer itself. A process for producing coagulated latex particles which can suppress the secondary coagulation under the condition having the broad temperature range, without deteriorating the original quality of the polymer itself by spraying or dropping a polymer latex into a gas-phase containing an inorganic salt and/or an acid, and a dispersant in an aerosol form, and dropping or feeding the droplets of the polymer latex into an aqueous phase containing a dispersant.Type: GrantFiled: July 12, 2006Date of Patent: June 1, 2010Assignee: Kaneka CorporationInventor: Takashi Ueda
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Publication number: 20100062232Abstract: The present invention concerns multilayer films comprising a plurality of layers, at least some of the layers comprise (i) cross-linked chitosan, alginate, chondroitin sulfate, or hyaluronic acid and (ii) particles or void spaces; wherein the layers are 20-260 nm in thickness. Also disclosed are multilayer films comprising at least two of: a layer comprising a first polymer; a layer comprising a second polymer; a layer comprising particles, wherein said particles comprise ceramic material, metallic species, or both; and, a layer comprising a combination of said first polymer and said particles; wherein said multilayer film is capable of displaying structural color. Also provided are methods for making and using the inventive multilayer films and compositions comprising the multilayer films.Type: ApplicationFiled: December 14, 2007Publication date: March 11, 2010Applicant: Drexel UniversityInventors: Caroline L. Schauer, Matthew D. Cathell, Holly A. McIlwee
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Publication number: 20090169759Abstract: The invention relates to a covering material for biomass and a method for the production thereof, in which at least two components (A) and (B) are mixed and subsequently applied onto the biomass, wherein component (A) comprises an oil of animal or vegetable origin and an alginate and component (B) comprises an aqueous latex dispersion and/or a protein dissolved in water.Type: ApplicationFiled: January 25, 2007Publication date: July 2, 2009Inventors: Olaf Roeder, Volker Kirchhoff, Rainer Bartel, Wolfgang Schwarz, Edgar Remmele
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Publication number: 20090030117Abstract: Embolic particles, as well as their methods of use and manufacture, are described.Type: ApplicationFiled: September 23, 2008Publication date: January 29, 2009Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Janel L. Lanphere, Ernest J. St. Pierre, Greg Kapoglis, Thomas V. Casey, II
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Publication number: 20090005472Abstract: Biodegradable aliphatic/aromatic copolyester comprising: A) an acid component comprising repeating units of: 1) 53 to 54 mol % of an aromatic carboxylic acid; 2) 47 to 36 mol % of an aliphatic acid at least 50% of which is azelaic acid ; B) a diol component selected from the group consisting of C3, C4 and C6 diols; said AAPE being disintegrated according to the Standard ISO 20200 in 90 days.Type: ApplicationFiled: March 17, 2006Publication date: January 1, 2009Applicant: NOVAMONT S.P.A.Inventors: Catia Bastioli, Tiziana Milizia, Giovanni Floridi, Andrea Scaffidi Lallaro, Giandomenico Cella, Maurizio Tosin
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Publication number: 20080318150Abstract: Paper compositions are provided that include an amine group-containing cationic polymeric material and a binder material. The paper compositions are particularly useful as receiver materials for images formed by electrophotographic imaging methods utilizing liquid developers. Also described are imaging methods that utilize the paper compositions as receiver materials and methods for manufacturing the paper.Type: ApplicationFiled: November 8, 2005Publication date: December 25, 2008Inventors: Satish Agrawal, Clifford W. Parker
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Patent number: 7199084Abstract: Suspensions are provided of water-soluble materials in non-aqueous carrier fluids using suspension agents that include thixotropic agents and, optionally, organophilic clays. Methods of forming such suspensions are provided. Methods are also provided for using such suspensions to prepare aqueous solutions, in particular thickened aqueous solutions, in particular for use in oilfield treatments.Type: GrantFiled: March 21, 2002Date of Patent: April 3, 2007Assignee: Schlumberger Technology CorporationInventors: Michael Parris, Geoff Robinson
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Patent number: 6951895Abstract: Disclosed is an absorbent composition comprising each of an acidic and a basic material, wherein the absorbent composition exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent composition comprising either an acidic water-swellable, water-insoluble polymer having a pKa between about 2 to about 12 or a basic water-swellable, water-insoluble polymer having a pKb between about 2 to about 12 and either a basic or an acidic second material. The absorbent composition has the ability to slowly absorb a large quantity of liquid, particularly while under an external pressure. The absorbent composition is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb bodily liquids.Type: GrantFiled: December 2, 1996Date of Patent: October 4, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jian Qin, Palani Raj Ramaswami Wallajapet
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Patent number: 6800593Abstract: Disclosed is a hydrophilic, water soluble polymer concentrate for addition to aqueous liquids to enhance the properties thereof, particularly to increase the viscosity or decrease the fluid loss of well drilling and servicing fluids, the concentrate comprising a hydrophobic, water insoluble liquid, an organophilic clay suspension agent, the water soluble polymer, and a stabilizing agent comprising one or more acids in an amount from about 0.001% to about 1.5%, one or more anionic surfactants in an amount from about 0.001% to about 1.0%, one or more nonionic surfactants in an amount from 0.001% to about 0.625% and, from about 0% to about 0.75% of one or more water soluble organic liquids, wherein the total concentration of the stabilizing agent is from about 0.1% to about 2.5%, these percentages being based on the weight of the concentrate.Type: GrantFiled: June 19, 2002Date of Patent: October 5, 2004Assignee: Texas United Chemical Company, LLC.Inventors: James W. Dobson, Jr., Shauna Leigh Hayden, Carolina Trejo Rangel
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Patent number: 6767938Abstract: This invention relates to modeling doughs comprising algin, a sugar based polysaccharide resin, water and a synthetic resin latex. Additionally disclosed are surface active coating compositions for molded compositions of the algin/sugar-based polysaccharide based modeling dough. Hardening and enhanced drying of the modeling compound articles is accomplished by a spray coating application to a finished molded article by a surface active agent coating composition comprising a Boron containing salt and polyvinylpyrrolidone.Type: GrantFiled: February 18, 2003Date of Patent: July 27, 2004Assignee: Mattel, Inc.Inventor: Abimael Cordova
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Publication number: 20040129173Abstract: A composition is provided consisting of an aqueous solution comprising at least one natural polysaccharide or a derivative thereof and at least one polymeric polyamino compound, the composition being capable of forming a film when applied onto a substrate. The invention also involves a method for temporary protection of a substrate surface from environmental influence using such composition.Type: ApplicationFiled: March 1, 2004Publication date: July 8, 2004Inventor: Sigfrid Svensson
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Publication number: 20030105192Abstract: Multi-layer reaction mixtures that includes exothermic generating particles having a water soluble coating encasing a portion of the particles, a volatile component and, optionally, a buffer, an aqueous solution or both. At least two layers of the reaction mixture contain exothermic generating particles and at least one layer of the reaction mixture contains a portion of the exothermic generating particles suspended in a gel that includes the water soluble coating. These multi-layer reaction mixtures are especially suited to generate heat in a controllable manner. In one such controlled reaction, the reaction components are mixed together and the reaction mixture increases in temperature to a Set Temperature within a predetermined time, and the mixture remains at the Set Temperature for a longer period of time. In this manner, volatile components can be controllably released to the surrounding environment.Type: ApplicationFiled: January 13, 2003Publication date: June 5, 2003Applicant: The Procter & Gamble CompanyInventors: Yu-Jun Li, Mark Hsiang-Kuen Mao, Haruo Tamura, Hsin-Yuan Hu
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Patent number: 6509390Abstract: The dental alginate impression material comprising a main paste containing an alginate, water and a filler as major components and a setting paste containing calcium sulfate and a liquid component as major components, the both pastes being to be mixed and set, wherein the main paste further contains 0.01 to 15% by weight of one or two or more polysaccharides selected from the group consisting of carrageenan, pullulane, curdlan, xanthane gum, gellan gum, pectin, konjak glucomannan, xyloglucan, guar gum, gum arabic, and locust bean gum, and the setting paste further contains 0.5 to 50% by weight of polybutene, is provided to thereby make the composition superior in preservability, and free from change of viscosity of the main paste with time, from liquid separation and deterioration of the setting paste, and from a delay in setting time due to the preservation.Type: GrantFiled: September 6, 2001Date of Patent: January 21, 2003Assignee: GC CorporationInventors: Nobutaka Watanabe, Hiroshi Kamohara
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Patent number: 6437038Abstract: A pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and one or more water soluble or water swellable hydrocolloids, the adhesive composition comprising a substantially homogeneous mixture of 15-60% of a butyl rubber, 15-60% of one or more tackifier resins, 1-10% of a tackifying liquid constituent, 20-60% of one or more hydrocolloids and 0-3% of a pigment shows very good properties as an adhesive for ostomy appliances.Type: GrantFiled: June 23, 2000Date of Patent: August 20, 2002Assignee: ColoplastInventor: Fei Chen
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Patent number: 6391939Abstract: The present invention relates to a biocompatible collagenous material which is non-toxic and biodegradable in less than one month, preferably in less than one week. This material comprises collagen and at least one hydrophilic macromolecular additive which is chemically non-reactive towards the collagen, with the collagen having at least partially lost its helical structure and being crosslinked. The invention also relates to a process for obtaining such a material. The collagenous material according to the invention is used, in particular, for preventing post-operative adhesions.Type: GrantFiled: August 5, 1999Date of Patent: May 21, 2002Assignee: Imedex BiomateriauxInventors: Jean-Louis Tayot, Michel Tardy, Philippe Gravagna
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Publication number: 20020058725Abstract: The dental alginate impression material comprising a main paste containing an alginate, water and a filler as major components and a setting paste containing calcium sulfate and a liquid component as major components, the both pastes being to be mixed and set, wherein the main paste further contains 0.01 to 15% by weight of one or two or more polysaccharides selected from the group consisting of carrageenan, pullulane, curdlan, xanthane gum, gellan gum, pectin, konjak glucomannan, xyloglucan, guar gum, gum arabic, and locust bean gum, and the setting paste further contains 0.5 to 50% by weight of polybutene, is provided to thereby make the composition superior in preservability, and free from change of viscosity of the main paste with time, from liquid separation and deterioration of the setting paste, and from a delay in setting time due to the preservation.Type: ApplicationFiled: September 6, 2001Publication date: May 16, 2002Applicant: GC CorporationInventors: Nobutaka Watanabe, Hiroshi Kamohara
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Patent number: 6387978Abstract: Shaped-medical devices, e.g. stents, having improved mechanical properties and structural integrity are disclosed. The devices comprise shaped polymeric hydrogels which are both ionically and non-ionically crosslinked and which exhibit improved structural integrity after selective removal of the crosslinking ions. Process for making such devices are also disclosed wherein an ionically crosslinkable polymer is both ionically and non-ionically crosslinked to form a shaped medical device. When implanted in the body, selective in-vivo stripping of the crosslinking ions produces a softer, more flexible implant having improved structural integrity.Type: GrantFiled: January 8, 2001Date of Patent: May 14, 2002Assignee: Boston Scientific CorporationInventors: John M. Ronan, Samuel A. Thompson
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Patent number: 6368356Abstract: The invention provides a means of boosting the mechanical performance of shaped shaped medical devices comprising polymer hydrogels, such as stents, so that they may be more easily inserted into or removed from the body. In one aspect, the invention provides shaped medical devices having increased mechanical strength and comprising both ionic and covalent crosslinks. In another aspect, the invention provides a shaped medical device having a heterogeneous polymer composition and a variable dissolution or degradation rate along its length. The shaped medical devices according to the present invention retain their shape and stiffness during insertion into the body and can swell and soften inside the body to enhance patient comfort.Type: GrantFiled: February 25, 2000Date of Patent: April 9, 2002Assignee: SciMed Life Systems, Inc.Inventors: Sheng Ping Zhong, Arthur R. Madenjian, Douglas E. Godshall, John M. Ronan, Samuel A. Thompson
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Patent number: 6358580Abstract: The invention relates to an optionally foamed sealing composition for preformed seals which can swell when treated with water. The invention also relates to a method for the production thereof out of natural rubber and/or elastomers with a matrix comprised of natural rubber/elastomer components and particle-shaped water absorbing material stored therein. The water absorbing material is a combination of (A) polysaccharide(s) selected from cellulose, starch, starch derivatives removed from grafted starch, amylose, amylopectin, dextran, pectin, inulin, chitin, xanthan, alginic acid, alginates, carrageenan, pustulan, callose, laminarin, guluronic acid, pullulan, lichenin or mixtures of the same with (B) a highly water absorbent synthetic polymer selected from polymers based on (meth)acrylate, poly(meth)acrylic acid and the salts thereof, polyacrylamide, polyalcohols or copolymers of said synthetic polymers.Type: GrantFiled: July 7, 2000Date of Patent: March 19, 2002Assignees: Datwyker A.G. Gummi & KunststoffeInventors: Thomas Mang, Günter Preiser, Jürgen Dahm