Patents by Inventor John L. Cawse
John L. Cawse has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9603229Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: GrantFiled: February 5, 2015Date of Patent: March 21, 2017Assignee: Hexcel Composites LimitedInventors: John L. Cawse, Martin Simmons, George Green
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Publication number: 20150156854Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: ApplicationFiled: February 5, 2015Publication date: June 4, 2015Inventors: John L. Cawse, Martin Simmons, George Green
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Patent number: 8980770Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: GrantFiled: August 5, 2008Date of Patent: March 17, 2015Assignee: Hexcel Composites LimitedInventors: John L. Cawse, Martin Simmons, George Green
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Patent number: 8980771Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: GrantFiled: December 20, 2010Date of Patent: March 17, 2015Assignee: Hexcel Composites LimitedInventors: John L. Cawse, Martin Simmons, George Green
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Patent number: 8946322Abstract: Thermosetting resins are provided that are toughened with an irradiated thermoplastic toughening agent and which have reduced levels of solvent-induced micro crack formation. The thermoplastic toughening agent is treated with a sufficient amount of high-energy radiation (e.g. electron beam or gamma rays) to cause a reduction in solvent-induced micro crack formation in the cured resin when compared to the same toughened thermosetting resin in which the non-irradiated version of the thermoplastic toughening agent is used.Type: GrantFiled: April 14, 2008Date of Patent: February 3, 2015Assignee: Hexcel Composites LtdInventors: John L. Cawse, Stephen Mortimer, Chrisopher J. Wade
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Publication number: 20120282434Abstract: Thermosetting resins are provided that are toughened with an irradiated thermoplastic toughening agent. The resins have reduced levels of solvent-induced micro crack formation and do not lose their adhesiveness when attacked by solvent. The thermoplastic toughening agent is treated with a sufficient amount of high-energy radiation (e.g. electron beam or gamma rays) to cause reductions in solvent-induced micro crack formation and solvent-induced loss of adhesiveness when compared to the same toughened thermosetting resin in which a non-irradiated version of the thermoplastic toughening agent is used.Type: ApplicationFiled: October 7, 2009Publication date: November 8, 2012Applicant: HEXCEL COMPOSITES, LTD.Inventors: John L. Cawse, Stephen Mortimer
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Patent number: 8263503Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: GrantFiled: December 22, 2010Date of Patent: September 11, 2012Assignee: Hexcel Composites, Ltd.Inventors: John L. Cawse, Martin Simmons, George Green
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Patent number: 8105964Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: GrantFiled: December 20, 2010Date of Patent: January 31, 2012Assignee: Hexcel Composites, Ltd.Inventors: John L. Cawse, Martin Simmons, George Green
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Publication number: 20110091718Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: ApplicationFiled: December 20, 2010Publication date: April 21, 2011Applicant: Hexcel Composites, Ltd.Inventors: John L. Cawse, Martin Simmons, George Green
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Publication number: 20110091719Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: ApplicationFiled: December 20, 2010Publication date: April 21, 2011Applicant: Hexcel Composites, Ltd.Inventors: John L. Cawse, Martin Simmons, George Green
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Publication number: 20110088923Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Applicant: Hexcel Composites, Ltd.Inventors: John L. Cawse, Martin Simmons, George Green
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Publication number: 20110034591Abstract: Thermosetting resins are provided that are toughened with an irradiated thermoplastic toughening agent and which have reduced levels of solvent-induced micro crack formation. The thermoplastic toughening agent is treated with a sufficient amount of high-energy radiation (e.g. electron beam or gamma rays) to cause a reduction in solvent-induced micro crack formation in the cured resin when compared to the same toughened thermosetting resin in which the non-irradiated version of the thermoplastic toughening agent is used.Type: ApplicationFiled: April 14, 2008Publication date: February 10, 2011Applicant: Hexcel Composites ,Ltd.Inventors: John L. Cawse, Stephen Mortimer, Chrisopher J. Wade
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Publication number: 20080295955Abstract: A composite material, the composite material comprising at least one prepreg, said prepreg comprising at least one polymeric resin and at least one fibrous reinforcement; and conducting particles dispersed in the polymeric resin.Type: ApplicationFiled: August 5, 2008Publication date: December 4, 2008Applicant: Hexcel Composites, Ltd.Inventors: John L. Cawse, Martin Simmons, George Green
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Patent number: 5360701Abstract: There is provided a roll film assembly which comprises a length of photographic film having attached to each end thereof a length of backing paper, the film and the backing paper being wound together on a flanged spool, the backing paper being a laminate of paper and polyethylene which comprises as an opaqueing agent a layer of polyethylene which comprises from 7 to 10% by weight of carbon black particles of which from 20 to 100% by weight are conductive carbon particles.Type: GrantFiled: April 19, 1993Date of Patent: November 1, 1994Assignee: Ilford LimitedInventors: Peter J. Elton, John C. Clarke, John L. Cawse, George Littler, Andrew Wigglesworth, Peter J. Herring
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Patent number: 5104914Abstract: It is the object of this invention to provide a method for the preparation of an antiblocking agent which is effective in its antiblocking activity but is considerable less visible in photographic enlargements made from the film containing the antiblock of this invention.There is described a process for the preparation of monodispersed polymer particles between 5 and 10 microns in diameter which comprises preparing a dispersion of monosized seed polymer particles and then adding to this dispersion an ethylenically unsaturated monomer which is different from the monomer used to prepare the seed polymer particles, together with a polymerization initiator and completing the polymerization, the refractive index of one of the polymers produced being greater than 1.54 and the refractive index of the other polymer being less than 1.54.The refractive index of gelatin is 1.54. There is produced by the process of the present invention a particle which comprises two polymers.Type: GrantFiled: May 10, 1990Date of Patent: April 14, 1992Assignee: Ilford LimitedInventors: Peter J. Elton, John L. Cawse
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Patent number: 5017667Abstract: A method of preparing a latex of a color coupler polymer which method in characterized in that it comprises dissolving in at least one ethylenically unsaturated non-coupling monomer which is liquid at room temperature at least two monomeric color couplers, the total amount of couplers being from 1 to 50% by weight of the non-coupling monomer, and dispersing this solution in an aqueous solution of a surfactant and a polmerization initiating system, and wherein the melting point of the mixture of monomeric color couplers is below the reaction temperature of said polmerization system.Type: GrantFiled: December 14, 1988Date of Patent: May 21, 1991Assignee: Ilford LimitedInventors: John L. Cawse, Philip J. Harris
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Patent number: 4902612Abstract: Aqueous photographic coating solutions comprising a gelatino silver halide emulsion, a synthetic polymer latex and a compound of the general formula ##STR1## where E.sup.1 and E.sup.2 represent the end groups of the polymer chain, R is an alkyl group or phenyl, R.sup.1 is a polyether moiety, M is a monovalent cation or hydrogen and x is 3 to 200, the ratio of this compound to the synthetic polymer being from 0.1 to 50 of this compound to 100 of the synthetic polymer on a dry solids basis.Type: GrantFiled: February 13, 1989Date of Patent: February 20, 1990Inventors: John L. Cawse, David Rowland
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Patent number: 4769301Abstract: Holograms using gelatin as the binders are prepared by holographically exposing holographic material with coherent light, developing the holographic image by a chemical or physical process and before processing, simultaneously or subsequently, treating the material with an aqueous solution of a polymer which comprises a tertiary amine group.Type: GrantFiled: December 10, 1986Date of Patent: September 6, 1988Assignee: Ciba-Geigy AGInventors: David W. Butcher, John L. Cawse
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Patent number: 4564718Abstract: A method of preparing a functionally terminated polymer comprising polymerizing a terpene or an oxygen derivative thereof having a double bond or conjugated double bond available for polymerization with an initiator having a grouping which provides, or is a precursor of, the functional termination for the polymer.Type: GrantFiled: August 14, 1984Date of Patent: January 14, 1986Assignee: The University of Manchester Institute of Science and TechnologyInventors: Richard H. Still, John L. Cawse, John L. Stanford
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Patent number: 4496751Abstract: Compounds of the formula (I) ##STR1## in which R.sub.1 and R.sub.2 are the same or different and are selected from hydrogen, substituted or unsubstituted methyl or ethyl radicals, and substituted or unsubstituted vinyl radicals, X is a --NH.sub.2 or --NCO group, and n is 0 or 1 with the proviso that n is not 0 when X is --NH.sub.2.Type: GrantFiled: April 1, 1983Date of Patent: January 29, 1985Assignee: The University of Manchester Institute of Science & TechnologyInventors: Richard H. Still, John L. Cawse, John L. Stanford