Patents Examined by Kathleen Choi
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Patent number: 6211100Abstract: A composite filter media (100) includes a meltblown/spunbond composite fiber material and a mixed fiber triboelectric material are preferably attached to each other by needling the mixed fiber material with the meltblown/spunbond composite fiber material. A netting (104) is then attached by preferably needling the mixed fiber triboelectric material and meltblown through the netting (104).Type: GrantFiled: April 30, 1996Date of Patent: April 3, 2001Assignee: Minnesota Mining and Manufacturing CompanyInventor: Pierre Legare
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Patent number: 6013587Abstract: Nonwoven articles having high durability and absorbent characteristics, and their methods of manufacture, are presented. One preferred article is characterized by(a) a nonwoven web comprised of organic fibers comprised of polymers having a plurality of pendant hydroxyl groups; and(b) a binder comprising an at least partially crosslinked and at least partially hydrolyzed polymeric resin having a plurality of pendant resin hydroxyl groups, the resin crosslinked by a crosslinking agent, the crosslinking agent selected from the group consisting of organic titanates and amorphous metal oxides, the polymeric resin derived from monomers selected from the group consisting of monomers within the general formula ##STR1## wherein: X is selected from the group consisting of Si(OR.sup.4 OR.sup.5 OR.sup.6) and O(CO)R.sup.7 ; andR.sup.1 -R.sup.7 inclusive are independently selected from the group consisting of hydrogen and organic radicals having from 1 to about 10 carbon atoms, inclusive, and combinations thereof.Type: GrantFiled: May 29, 1996Date of Patent: January 11, 2000Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jack G. Truong, Willa M. Studiner, Bradford B. Wright, Michael M. Rock, Jr.
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Patent number: 5837625Abstract: Disclosed are fibrous structures comprised of shaped fibers wherein the thickness of the compressed fibrous structure at 1.00 psi is .gtoreq.1.3 times that of a similar compressed structure having the same area density and made from round cross section fibers of the same dpf as the shaped fibers. The invention is useful in articles such as coats, gloves, boats, shoes, etc. made using the structures disclosed herein. The surprising feature of structures according to the present invention is the thickness retention at high pressures. This retained thickness under pressure translates directly into decreased heat transfer or improved insulation.Type: GrantFiled: January 28, 1997Date of Patent: November 17, 1998Assignee: Eastman Chemical CompanyInventors: Bobby Mal Phillips, Jackson Lee Nelson
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Patent number: 5834105Abstract: A structural polymeric composite containing corn-based material is provided. In one embodiment, a polymeric composite is a laminated polymeric composite that contains a fibrous component of corn. A method of making a structural composite using corn-based material is also provided.Type: GrantFiled: December 29, 1995Date of Patent: November 10, 1998Assignee: The Board of Trustees of the University of IllinoisInventors: Scott R. White, Nancy R. Sottos, Thomas A. Mackin
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Patent number: 5816305Abstract: A method of protecting an object during application of a fluid onto a surface. The method includes the following steps, (1) providing a cover having a first layer and a second layer attached together, the first layer including a non-woven fabric material and the second layer including a plastic material, and (2) positioning the cover relative to the object so that the fluid is prevented from contacting the object during application of the fluid onto the surface. A drop cloth having a first layer which includes a non-woven fabric material, and a second layer which includes a plastic material, is also disclosed.Type: GrantFiled: December 21, 1995Date of Patent: October 6, 1998Assignee: D.C. Macy CorporationInventor: David C. May
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Patent number: 5807630Abstract: A controlled permeability film including a film forming polymer and optionally including a dispersing polymer; and an inert porous filler optionally having a surface modifying agent coated thereon, the inert porous filler being present in an amount effective to reduce the ratio of the carbon dioxide permeability to the oxygen permeability of the film, and wherein the filler has a particle size greater than the intrinsic film thickness of the film forming polymer. A composite packaging article and a packaged produce product are also disclosed.Type: GrantFiled: June 11, 1997Date of Patent: September 15, 1998Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Gregor Bruce Christie, Terence William Turney, Simon Gerard Hardin, Victor Christov, Ru Yu Wu
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Patent number: 5807518Abstract: A friction material for a liquid medium consists of a fibre mat impregnated with a thermosetting resin, the fibres having a length of at least 12 mm. The method of producing such a material includes the steps of providing a mixture of fibres, carding the mixture to form a card web, lapping the card web, needling the lapped card web for form a needled mat and impregnating the needled mat with a thermosetting resin.Type: GrantFiled: November 27, 1995Date of Patent: September 15, 1998Inventors: Denis Menard, Jean-Pierre Boutaud, Richard Guerin, Gerard Jacq
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Patent number: 5804011Abstract: The invention is a stretchable layered fabric laminate which is air impermeable and waterproof while being permeable to water vapor. The stretchable fabric laminate includes a stretchable composite material layer consisting of a hydrophobic protective layer of a porous polymeric material on each side of a layer of hydrophilic water-vapor-permeable synthetic polymer. The composite material layer is laminated to at least one layer of stretchable fabric. The stretchable layered fabric laminate has excellent stretch and recovery properties in both machine and transverse directions, and is useful for the manufacture of form-fitting articles of protective clothing and other end uses.Type: GrantFiled: June 28, 1996Date of Patent: September 8, 1998Assignee: W. L. Gore & Associates, Inc.Inventors: Anit Dutta, Edward J. Daniel, Robert C. Willmann
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Patent number: 5795638Abstract: An arrangement for the attachment of a paper web leading edge on a paper supply roll utilizes a rapidly setting material, such as a hot melt adhesive in the form of beads, drops or dots to attach the leading edge of the first paper web layer to the second layer. The drops or beads may bridge the junction of the leading edge with the second layer. Strings or threads, which are attached to the dots of the rapidly setting adhesive, may bridge the juncture.Type: GrantFiled: July 14, 1995Date of Patent: August 18, 1998Assignee: Koenig & Bauer-Albert AktiengesellschaftInventors: Klaus Walter Roder, Hartwig Horst Trutschel
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Patent number: 5795634Abstract: A heat insulating noise reducing duct includes: an internal layer formed by helically winding a flat fibrous band and integrally bonding outer circumferential faces of adjacent joint parts of the band by resin reinforcing bands to thereby form a substantially smooth cylindrical shape; one or more resin linear bodies helically wound between these adjoining resin reinforcing bands and bonded to the fibrous band; an open-cell foam layer formed by helically winding an open-cell foam resin band onto an outer circumferential face of the inner layer while making its paired side edges abut each other; an intermediate sheet layer formed by helically winding a thin resin sheet-like band onto an outer circumferential face of the open-cell foam band while partially overlapping the resin sheet-like band, and by integrally bonding the overlapped parts; a closed-cell foam layer formed by helically winding a closed-cell foam resin band onto an outer circumferential face of the sheet layer while making its paired side edges aType: GrantFiled: September 16, 1996Date of Patent: August 18, 1998Assignee: Totaku Industries, Inc.Inventor: Kouki Fukui
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Patent number: 5792555Abstract: Described are a hybrid yarn consisting of two groups of filaments, one group consisting of one or more varieties of reinforcing filaments (filaments (A)) and the other group consisting of one or more varieties of matrix filaments (filaments (B)), whereinthe filaments (A) of the first group have an initial modulus of above 600 cN/tex, preferably of 800 to 25,000 cN/tex, in particular of 2,000 to 20,000 cN/tex,a tenacity of above 60 cN/tex, preferably of 80 to 220 cN/tex, in particular of 100 to 200 cN/tex, and a breaking extension of 0.01 to 20%, preferably of 0.1 to 7.0%, in particular of 1.0 to 5.0%,the filaments (B) of the second group are thermoplastic filaments which have a melting point which is at least 10.degree. C., preferably 20.degree. to 100.degree. C., in particular 30.degree. to 70.degree. C.Type: GrantFiled: April 10, 1996Date of Patent: August 11, 1998Assignee: Hoechst AktiengesellschaftInventors: Henning Bak, Bent Lichscheidt, Hans Knudsen
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Patent number: 5786051Abstract: An ink transfer roller for a support roller or support bar, in particular of metal, with a stretchable, interchangeable fiber-reinforced laminated plastic material cover (K) covered with a metal-ceramic layer (MK), which is provided with small ink transfer cups (FN), wherein the laminated plastic material cover (K) consists of a stretchable inner cover (UB) and an outer cover (OB), between which a foamed material compressible layer (SS) is enclosed.Type: GrantFiled: November 7, 1995Date of Patent: July 28, 1998Assignee: Kurt Zecher GmbHInventors: Georg Niggemeier, Franz-Josef Driller, Roland Brinkman
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Patent number: 5780370Abstract: Robust, large area selective infrared line emitters can be made using composites of rare earth metal oxide fibers dispersed and interlocked in a network of connected structure-forming fibers, especially alumina fibers, where the fibers are adhesively connected by a ceramic bonding agent. Articles where the composite is formed of rare earth metal oxide fibers in a network of alumina fibers and where the two types of fibers are connected by alumina a the ceramic bonding agent show narrow bandwidth emissions with good thermal conversion efficiencies and with improved tensile strength and lower brittleness than in the absence of the ceramic bonding agent.Type: GrantFiled: August 19, 1996Date of Patent: July 14, 1998Assignee: Auburn UniversityInventors: Zheng Chen, Millard Franklin Rose, Peter L. Adair
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Patent number: 5776597Abstract: There is provided a speaker damper for use in an acoustic output device, which exhibits excellent shape retaining property at the time of molding, is highly safe to work environment and has excellent water resistance, heat resistance an durability. The speaker damper is obtained by impregnating cloth formed of mixed yarn of a wholly aromatic polyamide fiber and an aromatic polyester fiber with a polyester resin, and molding the cloth under heat and pressure.Type: GrantFiled: February 22, 1996Date of Patent: July 7, 1998Assignees: Teijin Limited, Matsushita Electric Industrial Co., Ltd.Inventors: Hirosuke Watanabe, Takeo Kimura, Masatoshi Okazaki, Shinya Mizone
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Patent number: 5776838Abstract: In a ballistic fabric, the use of plurality of bicomponent fibers; the ballistic fabric is made from a plurality of bicomponent fibers and a plurality of high strength fibers. The bicomponent fibers have a sheath and a core, the sheath being made of a polymer having a melting point and the core being made of a polymer having a melting point. The sheath's melting point is less than the core's melting point. The fabric is bonded together using the sheath polymer of the bicomponent to the fibers of the fabric.Type: GrantFiled: February 28, 1997Date of Patent: July 7, 1998Assignee: Hoechst Celanese CorporationInventor: Allan Marcus Dellinger
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Patent number: 5773370Abstract: An entangled multifilament yarn made from high strength filaments having a tenacity of at least about 7 g/d, a tensile modulus of at least about 150 g/d and an energy-to-break of at least about 8 J/g. The yarn is used to make ballistic resistant articles.Type: GrantFiled: February 15, 1996Date of Patent: June 30, 1998Assignee: AlliedSignal Inc.Inventors: James Jay Dunbar, Chok Bin Tan, Gene Clyde Weedon, Thomas Yiu-Tai Tam, Alfred Lewis Cutrone, Elizabeth Stroud Bledsoe
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Patent number: 5773127Abstract: Improved durability and sharper chemical embossing images are obtained in a thick foamed thermoplastic floor structure by the use of an unfoamed inner layer. The floor covering is formed on a release paper and includes an unfoamed thermoplastic base coat, lower foamed thermoplastic layer, an unfoamed thermoplastic inner layer, an upper foamed thermoplastic layer and a clear coat. The enhanced chemical embossing is achieved by printing an inhibitor containing ink on the inner layer and below the upper foamed layer. Multilevel embossing is obtained by embossing both foamed thermoplastic layers or applying a growth-controlling agent to both surfaces of one foamable thermoplastic layer. The preferred embodiment includes a pearl platelet containing layer above the upper foamed layer to give the illusion of deeper embossing. The preferred embodiment also includes a wear coat of the reaction product of an aminoplast, a urethane and a polyol.Type: GrantFiled: October 18, 1993Date of Patent: June 30, 1998Assignee: Armstrong World Industries, Inc.Inventors: Pamela H. Martin, William J. Kauffman, Bruce F. Dietrich
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Patent number: 5773375Abstract: There is provided thermally stabilized polypropylene melt-blown microfiber acoustical insulation web which has a resistance to thermal degradation at a temperature of 135.degree. C. for at least 10 days. The polypropylene has a thermal stabilizer uniformly distributed within the melt-blown microfiber polymer which polymer when produced is subject to thermal and/or catalytic degradation in the absence of significant levels of thermal stabilizer or antioxidant.Type: GrantFiled: May 29, 1996Date of Patent: June 30, 1998Inventors: Michael D. Swan, Ruth A. Ebbens
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Patent number: 5773122Abstract: Layered carbon-carbon composites having improved interlaminar tensile strength are disclosed together with a process for making such composites. A metal catalyst is first deposited on a panel comprising a plurality of layers of carbon fiber cloth. The panel is then exposed to a gaseous hydrocarbon in an inert atmosphere at elevated temperature in order to promote the growth of graphite whiskers between the carbon cloth layers.Type: GrantFiled: November 7, 1996Date of Patent: June 30, 1998Assignee: Fiber Materials, Inc.Inventors: James R. Lennox, Daniel C. Nelson, Roger T. Pepper
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Patent number: RE36459Abstract: Wrapping material formed of a foamed plastic-like material. The wrapping is formed in elongated strips and adheres to itself and most surfaces it is applied without requiring the use of a separate adhesive.Type: GrantFiled: May 6, 1996Date of Patent: December 21, 1999Assignee: Sun Glitz CorporationInventor: Janene Youngs McVicker