Patents Examined by Marie R. Macholl
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Patent number: 5472775Abstract: Elastic materials, particularly films, strips, coatings, ribbons and sheets made from at least one substantially linear ethylene polymer are disclosed which can be fabricated on conventional polyolefin extrusion equipment. They can be used to produce elastic composite structures that are stretchable and have recycle compatibility between elastic and non-elastic components. The novel materials have at least about 80% recovery at 100% strain and are especially useful in making fabricated composite articles (e.g., disposable diapers).Type: GrantFiled: August 17, 1993Date of Patent: December 5, 1995Assignee: The Dow Chemical CompanyInventors: Todd J. Obijeski, Georgia M. Huff, Rexford A. Maugans, Osborne K. McKinney
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Patent number: 5468558Abstract: A process for preparing fracture-resistant sol/gel particles which contain silicon dioxide, in which a highly disperse filler is added to the aqueous alkali metal silicate solution and/or the aqueous acid solution used in the preparation process.Type: GrantFiled: May 14, 1993Date of Patent: November 21, 1995Assignee: Solvay Catalysts GmbHInventors: Helmut Derleth, Karl H. Bretz
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Patent number: 5464673Abstract: An information recording medium has a recording layer which comprises a composition containing:I) at least one organic polymer selected from the group consisting of:(a) conjugated polymers whose conformations change by thermal energy, for example, polythiophene, and(b) polymers containing as a component a diene monomer and/or an aromatic-ring-containing vinyl monomer, for example, polystyrene; andII) a dye having light-absorbing ability, for example, naphthalocyanine. Despite the recording layer is of the organic type that features non-toxicity and low manufacturing cost as advantages, the recording layer makes it possible to produce a rewritable optical disc which can be recorded by a semiconductor laser (830, 780 nm) employed widely.Type: GrantFiled: August 5, 1992Date of Patent: November 7, 1995Assignee: Hitachi Chemical Co., Ltd.Inventors: Itsuo Watanabe, Atsushi Kuwano, Jun Taketatsu, Nobuaki Takane, Mitsuo Yamada, Seiji Tai
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Patent number: 5464681Abstract: This invention relates to a replaceable adhesive display comprising a paper, metallized paper, or foil substrate printed on one or both sides with the same or different images, and at least one side is provided with a transparent overlay. The exposed surface of the plastic film overlay is coated with a pressure-sensitive, replaceable adhesive, but in order to achieve proper bonding between the overlay and the adhesive, the overlay surface is treated to enhance the bond between the overlay and adhesive. Following the surface treatment, the overlay is coated with a pressure-sensitive, replaceable adhesive. When the display is removed or peeled from the mounting surface, there is a relatively clean separation at the interface between the adhesive and the surface of the adherend, and substantially no residue remains on the surface. The adhesive is reusable or resealable and permits remounting the display many times. Preferably, a quick-release member is provided over the coating to protect the coating.Type: GrantFiled: July 6, 1993Date of Patent: November 7, 1995Assignee: Service Litho-Print, Inc.Inventor: Richard J. Luce
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Patent number: 5462807Abstract: The invention concerns a certain class of polymers, their production into films and applications for their use. These polymers have unique properties which make them particularly well suited for use in polymeric films. These films are very useful in applications requiring heat sealability, particularly those applications containing an ionomer film.It has been discovered that polymers derived from metallocene catalyst systems surprisingly heat seal extremely well, as compared to polymer produced by conventional Ziegler-Natta catalysts, to a class of polymers known as ionomers.Type: GrantFiled: August 20, 1993Date of Patent: October 31, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Richard W. Halle, Donna S. Davis, Charles R. Harris, Jr.
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Patent number: 5458973Abstract: A granular filler comprising a particulate inorganic material; from 0.1% to 10% by weight, based on the weight of the organic material, of fine carbon black; and sufficient amount of a natural or synthetic latex composition to provide from 1% to 10% by weight of elastomer solids, based on the weight of the inorganic material, wherein the granules have diameters within the range of from 0.01 mm to 0.1 mm.Type: GrantFiled: April 29, 1994Date of Patent: October 17, 1995Assignee: ECC International Ltd.Inventor: David G. Jeffs
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Patent number: 5445863Abstract: Camouflage sheet material is formed by sandwiching a resilient core material between an inner and an outer layer of fabric or the like, and providing a series of irregularly spaced seams across the material to compress the resilient material along the seams and provide a three dimensional, textured appearance resembling the bark of a tree. The inner and outer layers may be a natural or synthetic fabric, and the core material may be a natural as synthetic fiber or foam material. Multiple layers of the core material may be used for greater depth in the external three dimensional texture, and/or greater insulating properties. The outer layer of material may be patterned with different colors or shadings for greater realism, and may include leaf patterns sporadically placed thereon for greater realism. The sewing process may be automated by gang sewing the seams with pattern repeats.Type: GrantFiled: May 3, 1994Date of Patent: August 29, 1995Inventors: Timothy P. Slagle, Keith J. Slale
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Patent number: 5445871Abstract: A surface-modified plastic plate for use in optical disc bases, windows of aircrafts, automobiles or of architectural structures, solar cell receptors, liquid crystal display panels and protective sheet of computer touch panels, which comprises a laminate consisting of a plastic substrate; a cured film of an actinic ray-curable primer composition, said cured film formed onto a surface of the plastic substrate in a film thickness of 0.1 to 10 .mu.m; and an inorganic material layer formed onto the cured film by a physical deposition process and having a thickness of 0.1 .mu.m or more but less than 1.0 .mu.Type: GrantFiled: July 22, 1994Date of Patent: August 29, 1995Assignee: Kansai Paint Co., Ltd.Inventors: Heihachi Murase, Tsutomu Norimatsu, Masao Ogawa, Naoya Haruta
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Patent number: 5443873Abstract: There is disclosed an electrically conductive rubber roller for electrophotography which changes very little in electric resistance with changes in environment. This roller is used for charging and image transferring processes in copying machines and laser beam printers. The roller comprises a porous body of crosslinking silicone composition, containing at least a silica type filler, carbon black a foaming agent and siloxane polymer; the composition has an electric resistance of 10.sup.3 -10.sup.8.Type: GrantFiled: November 12, 1992Date of Patent: August 22, 1995Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Hitoshi Itani, Yuji Yamasaki, Hirotoshi Murakami
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Patent number: 5443902Abstract: Improvements in the construction of postformable laminates are disclosed by the provision of a single high basis weight, high coarseness, high kappa number sheet formed predominantly of softwood pulp, preferably southern loblolly pine, which pulp has been treated in a mechanical device that effectively imparts kinking and curling to the individual pulp fibers. The sheet is intended as a replacement for the highly extensible sheet(s) currently located on the back of the laminate farthest away from the core.Type: GrantFiled: January 31, 1994Date of Patent: August 22, 1995Assignee: Westvaco CorporationInventors: David E. Knox, J. Donato Fortin, Harold L. Hintz
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Patent number: 5443884Abstract: Film-based composite structures meet the requirements of highly weight-efficient SDI space-based systems. These structures are rigid, lightweight, dimensionally stable, and possess a high degree of structural damping. Thin-walled structures (wall thickness less than 50 .mu.) made from self-reinforced ordered-polymer films overcome drawbacks of fiber-reinforced composites, and provide resistance to microcracking, ply delamination and impact. They have high temperature capability (over 300.degree. C.), low temperature (cryogenic) capability and the capability for hardening and survivability. The modulus and dimensional stability of film-based ultralightweight honeycomb sandwich structures is better than currently possible with aluminum or fiber-reinforced composite materials. Other thin-walled structures such as tension web beams and thin facesheets also show similar stiffness-to-weight advantages over current materials.Type: GrantFiled: February 14, 1992Date of Patent: August 22, 1995Assignee: Foster-Miller, Inc.Inventors: Richard W. Lusignea, Joseph J. Stanco, Uday Kashalikar
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Patent number: 5437911Abstract: A film for packaging sliced foodstuffs, such as, for example cheese slices, is wound around the foodstuff in the form of a tube lying flat and completely encloses the foodstuff, the two edge zones on the longitudinal axes of the film overlapping and being joined to one another by a full-surface or partial heat-sealable coating. The film comprises a monolayer or coextruded multilayer, in each case biaxially stretched and heat-fixed, film, which has full-surface or partial peelable heat-sealable coating and contains a water-repellant additive component mixture.Type: GrantFiled: January 28, 1993Date of Patent: August 1, 1995Assignee: Wolff Walrode AGInventors: Heinz-Werner Rohrka, Lothar Sieben, Rolf Mueller, Wolfgang Funk
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Patent number: 5428081Abstract: The non-asbestos, frictional material composition comprising a fibrous metal, carbon powder manufactured by sintering a mixture of coke and pitch, a hardening agent, a heat-resistant agent, and a filler for stabilizing the composition. The process for manufacturing the composition comprising manufacturing the fibrous metal and carbon powder, inserting the composition in a predetermined mold and molding the composition, and hardening the molded composition for a time.Type: GrantFiled: June 3, 1993Date of Patent: June 27, 1995Assignees: Elim Engineering Corp., Byung Hum SongInventor: Byung Hum Song
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Patent number: 5424129Abstract: A composite metal oxide charge enhancing additive composition comprised of a first metal oxide forming a core particle, and a second metal oxide forming an outer layer on the first metal oxide core particle of the formula [(M.sup.1 O.sub.n)x]-[(M.sup.2 O.sub.n).sub.y ] wherein M.sup.1 represents the first metal oxide metal, M.sup.2 represents the second metal oxide metal, n is an integer representing the number of oxygen atoms and is determined by the valence of the metal M to which the oxygen atoms are bonded, x and y represent the relative molar ratios of the first and second metal oxides, and wherein M.sup.1 is different from M.sup.2.Another embodiment is a composite metal oxide toner charge enhancing additive composition comprising an organosilane outer layer or coating covalently bonded on the outer surface of the second metal oxide layer of the formula {(M.sup.1 O.sub.n).sub.x }-{M.sup.2 O.sub.n).sub.y }-{Si R.sub.4-n).sub.z } wherein (Si R.sub.4-n).sub.Type: GrantFiled: November 16, 1992Date of Patent: June 13, 1995Assignee: Xerox CorporationInventors: Richard B. Lewis, Michael J. Levy
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Patent number: 5420613Abstract: A multi-usable thermal transfer ink sheet wherein on a foundation is provided a thermal transfer ink layer which is tranferable in portions in terms of the thickness thereof. To realize multi-printing even in an indirect thermal transfer method, the multi-usable thermal transfer ink sheet is characterized in that the thermal transfer ink layer contains as main ingredients thereof a wax compound having a polar group, and a pigment.Type: GrantFiled: December 2, 1993Date of Patent: May 30, 1995Assignee: Fujicopian Co. Ltd.Inventors: Masao Saisho, Jun Sogabe, Katsuhiro Yoshida, Naohiro Ikeda
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Patent number: 5419942Abstract: A base film of a digital compact cassette tape comprising at least two layers consisting of laminated biaxially oriented polyester films, one surface of which has center line average roughness of 5 to 20 nm, and the other surface of which has center line average roughness of 15 to 45 nm, and which has a Young's modulus in a machine direction of at least 600 kg/mm.sup.2, which base film is excellent in running stability and electromagnetic conversion characteristics.Type: GrantFiled: January 14, 1993Date of Patent: May 30, 1995Assignee: Diafoil Hoechst Company, LimitedInventors: Narihiro Masuda, Masashi Inagaki
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Patent number: 5419949Abstract: A flat, heat recoverable shrink object is comprised of a plurality of core strands placed in a parallel position and each having a polymeric, thermoplastic or crosslinked core around which is coiled a high tensile strength thread such as glass, metal, cotton polyamide etc. These core strands are combined with high strength threads extending transverse to the core strands and being e.g. interwoven or looped or just superposed; All these parts are embedded in a crosslinked, heated stretched and cooled-again polymer layer whereby the coiled helices are stretched accordingly. This flat object is applied to other objects for being heat shrunk thereon. The two high strength threads tear proof the object particularly during its being made.Type: GrantFiled: January 4, 1993Date of Patent: May 30, 1995Assignee: Yabelmetall Electro GmbHInventors: Karl-Heinz Marx, Franz Grajewski
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Patent number: 5418208Abstract: A laminated plastic card provided a lamination of a dye accepting layer, a substrate of paper or the like, and a back coat layer, on which lamination one or more patterns are printed with a volatile dye, and a transparent plastic film adhered on the lamination by an adhesive agent, wherein the adhesive agent is a saturated polyester resin having an average molecular weight of approximately 18,000 gm/mole and produced by condensation polymerization of polypropylene glycol or trimethylol propane and adipic acid or azelaic acid.Type: GrantFiled: May 6, 1993Date of Patent: May 23, 1995Assignee: Fujipla, Inc.Inventors: Hideyuki Takeda, Noriyuki Kawashima
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Patent number: 5415937Abstract: An improved golf ball including a novel cover composition, including a blend of a high stiffness ionomer having a melt index of 0.5-5.0 g/min., flexural modulus of 60,000-120,000 psi and shore hardness of 70 or greater and a very low modulus methacrylic acid ionomer having a melt index of 0.5 to 10.0 g/min., flexural modulus of 2,000-8,000 psi or less and Shore D hardness of 20-50. The resulting golf ball shows improved resilience and playability over known golf balls.Type: GrantFiled: October 21, 1993Date of Patent: May 16, 1995Assignee: Dunlop Slazenger CorporationInventors: Lauro C. Cadorniga, Frank M. Simonutti
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Patent number: 5415936Abstract: Surface-modified, pyrogenically produced titanium dioxide which has the following physico-chemical properties:______________________________________ Surface (m.sup.2 /g) 5 to 120 Stamping density (g/l) 50 to 250 Drying loss (%) <5 Annealing loss (%) 3.5 to 15 Carbon content (%) 0.5 to 12 pH 4 to 10.Type: GrantFiled: January 28, 1993Date of Patent: May 16, 1995Assignee: Degussa AktiengesellschaftInventors: Hans Deusser, Dieter Kerner, Jurgen Meyer, Gunther Michael, Andreas Stubbe