Patents Represented by Attorney D. L. Webster
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Patent number: 5120802Abstract: This invention relates to a novel polycarbonate-based block polymer, and to fibers and bioresorbable implantable medical devices fabricated from said fibers.Type: GrantFiled: December 17, 1987Date of Patent: June 9, 1992Assignee: Allied-Signal Inc.Inventors: Frank Mares, William J. Boyle, Jr., Reginald T. Tang, Kundanbhai M. Patel, Abraham M. Kotliar, Tin-Ho Chiu
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Patent number: 5112667Abstract: The present invention is an improved impact resistant composite and helmet made thereof. The helmet comprises an impact resistant composite shell. The composite shell comprises a plurality of prepreg packets. Each prepreg jacket comprises at least about 2 and preferably 5 to 20 prepreg layers. There are from 2 to 50 and preferably 5 to 20 prepreg packets. Each prepreg layer comprises a plurality of unidirectional coplanar fibers embedded in a polymeric matrix. The fibers of adjacent layers in the prepreg packets are at an angle of from 45.degree. to 90.degree., preferably 60.degree. to 90.degree., more preferably 80.degree. to 90.degree. and most preferably about 90.degree. from each other. The angle of the fiber in alternate layers is preferably, subtantially the same.Type: GrantFiled: July 31, 1990Date of Patent: May 12, 1992Assignee: Allied-Signal Inc.Inventors: H. L. Li, D. C. Prevorsek
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Patent number: 5109078Abstract: The present invention is a cyanato group containing phenolic resin of the formula: ##STR1## wherein n is 0 or an integer of one or more, and R is the same or different and is selected from the group consisting of hydrogen and methyl radicals. The advancement over the art is that the resin of the present invention is stable and has a long shelf life. This is indicated by the gel time of greater than 1 minute, preferably greater than 2 minutes, more preferably greater than 10 minutes, and most preferably greater than 20 minutes at 155.degree. C. Alternately, the improved resin of the present invention can be characterized as having a thermal stability indicated by thermal decomposition temperature of at least 400.degree. C. and preferably of at least 450.degree. C. as measured by Thermal Gravimetric Analysis (TGA).Type: GrantFiled: April 1, 1991Date of Patent: April 28, 1992Assignee: Allied-Signal Inc.Inventors: Sajal Das, Dusan C. Prevorsek
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Patent number: 5094811Abstract: The invention is a method for making an electrically conductive path on the wall of a passage through a substrate. It is especially useful for connecting electrically conductive paths (25) on opposite sides of a circuit board (20). The method is characterized by the steps of forming a tapered passage (21) through the substrate (20) that connects to at least one conductive path on each side of the substrate (20), filling the tapered passage (21) with an electrically conductive powder (10), applying pressure with a tapered die (30) to compact the powder (11) against the wall of the passage (21) without blocking the passage, and then heating the compacted powder (11) to a temperature that increases the conductivity and ductility of the compacted powder (11) and its adhesion to the substrate (20) without adversely affecting the shape or condition of the substrate (20).Type: GrantFiled: December 30, 1985Date of Patent: March 10, 1992Assignee: Allied-SignalInventors: Robert P. Kane, Bruce E. Kurtz
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Patent number: 5069970Abstract: This invention relates to a fiber comprising a major amount of a continuous phase comprising one or more melt processible polyesters of fiber forming molecular weight, and a minor amount of one or more polyolefins non-uniformly dispersed in said continuous phase such that the concentration of polyolefins at or near the surface of said fiber is greater than the concentration of polyesters at or near the surface of said fiber, and a process for preparing said fiber.Type: GrantFiled: December 18, 1989Date of Patent: December 3, 1991Assignee: Allied-Signal Inc.Inventors: Theodore Largman, Frank Mares, Clarke A. Rodman
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Patent number: 5070162Abstract: A process of preparing a copolymer of vinyl monomer selected from the group consisting of vinyl acetate, vinyl propionate and vinyl trifluoroacetate, and of fluorinated monomer selected from the group consisting of tetrafluoroethylene and trifluoroethylene, said copolymer having an alternating or substantially alternating distribution of vinyl recurring monomeric units and fluorinated recurring monomeric units in the copolymer backbone which comprises copolymerizing said monomers in an aqueous reaction medium comprising water and a water miscible organic co-solvent in an amount less than the amount sufficient to form a distinct organic co-solvent phase.Type: GrantFiled: October 20, 1989Date of Patent: December 3, 1991Assignee: Allied-Signal Inc.Inventors: Bryce C. Oxenrider, David J. Long, Frank Mares
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Patent number: 5069820Abstract: This invention relates to compositions of thermally stable electrically conductive substituted and unsubstituted polyanilines and to conductive articles formed from such compositions.Type: GrantFiled: August 7, 1987Date of Patent: December 3, 1991Assignee: Allied-Signal Inc.Inventors: Kwan-Yue A. Jen, Ronald L. Elsenbaumer
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Patent number: 5068060Abstract: This invention relates to electrically conductive and non-conductive forms of poly(heterocyclic vinylenes) and to solutions of same. Another aspect of this invention relates to novel precursor polymers which can be converted into the poly(heterocyclic vinylenes) of this invention.Type: GrantFiled: May 7, 1990Date of Patent: November 26, 1991Assignee: Allied-Signal Inc.Inventors: Kwan-Yue A. Jen, Ronald L. Elsenbaumer, Lawrence W. Shacklette
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Patent number: 5066772Abstract: This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.Type: GrantFiled: January 18, 1990Date of Patent: November 19, 1991Assignee: Allied-Signal Inc.Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundan M. Patel
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Patent number: 5061438Abstract: The invention is a method for providing an electrically conductive path through a substrate. It is especially useful for electrically connecting together electrically conductive paths (25) on opposite sides of a circuit board (20). The method is characterized by the steps of forming a passage (21) through a substrate (20) that connects to at least one conductive path (25) on each side of the substrate (20), filling the passage (21) with an electrically conductive powder (10), applying pressure with a die (30) to obtain a compacted powder (11) in the passage (21), and then heating the compacted powder (11) to a temperature that increases the conductivity and ductility of the compacted powder (11) and its adhesion to the substrate (20) without adversely affecting the shape or condition of the substrate (20).Type: GrantFiled: December 30, 1985Date of Patent: October 29, 1991Assignee: Allied-Signal Inc.Inventors: Edwin D. Lillie, Joseph M. Ilardi, Robert P. Kane
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Patent number: 5057368Abstract: A trilobal or quadrilobal fiber formed from thermoplastic polymers, said fiber having a cross-section comprised of a central core having three or four T-shaped lobes, the legs of each intersecting at the center of said core such that the angle between the legs of adjacent lobes is from about 80.degree. to about 130.degree..Type: GrantFiled: December 21, 1989Date of Patent: October 15, 1991Assignee: Allied-SignalInventors: Theodore Largman, Fred J. Gefri, Frank Mares
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Patent number: 5055509Abstract: A process for enhancing the compatibility of polyester and polyamide in blends by adding thereto an effective amount of an aryl phosphoryl azide compound as for example diphenyl phosphoryl azide, and thereafter heating the composition until the desired enhancement in compatibility is obtained as evidenced by a lower of the individual melting points of the polyester and polyamide in the blend.Type: GrantFiled: April 17, 1989Date of Patent: October 8, 1991Assignee: Allied-Signal Inc.Inventors: H. R. Bhattacharjee, Y. P. Khanna, R. Kumar, J. J. Belles, Jr.
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Patent number: 5032656Abstract: The present invention is directed to a copolymer of a fluoromonomer having the formula R.sub.1 R.sub.2 C=CR.sub.3 F wherein R.sub.1, R.sub.2 and R.sub.3 are selected from H and F, and R.sub.3 may be Cl when R.sub.1 and R.sub.2 are F; and a vinyl monomer having the formula H.sub.2 C=CHR.sub.x, wherein R.sub.x is a radical having the formula --O.sub.2 CR.sub.y, wherein R.sub.y is a radical selected from CH.sub.3 and C.sub.2 H.sub.5.The resulting copolymer comprises fluorinated units having the formula (R.sub.1 R.sub.2 C-CR.sub.3 F) wherein R.sub.1, R.sub.2 and R.sub.3 are selected from H and F, and R.sub.3 may be Cl when R.sub.1 and R.sub.2 are F, and corresponding amounts of vinyl units having the formula (H.sub.2 C-CHR.sub.x), wherein R.sub.x is selected from --CH.sub.3 and C.sub.2 H.sub.5. In an alternate and preferred embodiment the copolymer is hydrolyzed so that R.sub.x becomes --OH.Type: GrantFiled: November 21, 1990Date of Patent: July 16, 1991Assignee: Allied-Signal Inc.Inventors: Frank Mares, Bryce C. Oxenrider, David J. Long, John P. Sibilia
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Patent number: 5011748Abstract: This invention relates to a novel cathode for use in batteries, and to batteries containing the cathode, which cathode comprises cobalt dioxide in the P2 phase.Type: GrantFiled: May 12, 1989Date of Patent: April 30, 1991Assignee: Allied-SignalInventors: Lawrence W. Shacklette, Linda B. Townsend, Taiguang R. Jow
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Patent number: 5006390Abstract: The present invention relates to high strength, high modulus polyethylene filaments which form composites having improved shear strength and composites formed from said filaments.Type: GrantFiled: June 19, 1989Date of Patent: April 9, 1991Assignee: Allied-SignalInventors: Sheldon Kavesh, Kwang Kim, Young D. Kwon, Dusan C. Prevorsek
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Patent number: 5004788Abstract: The present invention is a cyanato group containing phenolic resin of the formula: ##STR1## wherein n is 0 or an integer of one or more, and R is the same or different and is selected from the group consisting of hydrogen and methyl radicals. The advancement over the art is that the resin of the present invention is stable and has a long shelf life. This is indicated by the gel time of greater than 1 minute, preferably greater than 2 minutes, more preferably greater than 10 minutes, and most preferably greater than 20 minutes at 155.degree. C. Alternately, the improved resin of the present invention can be characterized as having a thermal stability indicated by thermal decomposition temperature of at least 400.degree. C. and preferably of at least 450.degree. C. as measured by Thermal Gravimetric Analysis (TGA).Type: GrantFiled: March 1, 1989Date of Patent: April 2, 1991Assignee: Allied-Signal Inc.Inventors: Sajal Das, Dusan C. Prevorsek
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Patent number: 4988785Abstract: Bismaleimide resins based on indane bisphenol and composites formed from such resins.Type: GrantFiled: June 30, 1989Date of Patent: January 29, 1991Assignee: Allied-SignalInventors: Charles W. Paul, Kundan M. Patel, Stephen C. Arnold
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Patent number: 4983299Abstract: A porous biomass support system in a fixed bed reactor configuration affords biodegradation of phenolic materials to a level under 20 parts per billion at an hydraulic residence time of about 15 hours with significantly less sludge formation currently possible by available methods. The porous biomass support system utilizes an open-celled foam within which is entrapped small particles of porous activated carbon and suitable microorganisms. The carbon is self-regenerative and does not have to be periodically replaced or replenished. The entire porous biomass support system can operate for extended periods of time without replacement.Type: GrantFiled: April 10, 1989Date of Patent: January 8, 1991Assignee: Allied-SignalInventors: F. S. Lupton, Denise M. Zupancic