Patents by Inventor George F. Medford
George F. Medford 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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Publication number: 20040149026Abstract: In one aspect of the invention, a method and system are provided for analyzing the adhesion of a coating. The method comprises the steps of directing light into the coating, using an image detector to collect light and fluorescence images from the coating/substrate combination, and applying a set of analysis tests to the collected light and fluorescence images. In another aspect of the invention, a method and system are provided for quantitatively analyzing the spatially resolved curing condition of a coating. The method comprises the steps of providing a coating with a fluorophore that is responsive to a defined curing condition, applying the coating onto a substrate, and using the defined curing process to cure the coating. The method comprises the further steps of using an image detector to collect fluroescence image from the coating, and applying a set of analysis tests to the fluorescence image.Type: ApplicationFiled: February 5, 2003Publication date: August 5, 2004Applicant: General Electric CompanyInventors: Radislav Potyrailo, George F. Medford, James Cawse
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Patent number: 5958598Abstract: Transparent substrates are rendered resistant to fogging by the application of a hardcoat composition comprising finely divided silica, a multi-functional olefin containing two or more olefinic moieties and one or more divalent oxyalkylene radicals having the formula:--((CX.sub.2).sub.n O).sub.x ((CX.sub.2).sub.m O).sub.y --where the sum of the x stoichiometric subscripts for each divalent oxyalkylene radical and the sum of the y stoichiometric subscripts for each divalent oxyalkylene radical when said sums are added together is ten or greater and the stoichiometric subscripts n and m are different and have values independently ranging from one to ten, where each X is independently selected from the group consisting of hydrogen, one to forty carbon atom monovalent hydrocarbon radicals and six to forty carbon atom monovalent aromatic hydrocarbon and an olefinically functionalized trialkoxysilane followed by curing.Type: GrantFiled: February 5, 1998Date of Patent: September 28, 1999Assignee: General Electric CompanyInventors: Igor V. Khudyakov, George F. Medford
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Patent number: 5827923Abstract: This invention provides a coating composition which utilizes a free radical initiator and an organic tintability additive which remains substantially unpolymerized even after the remainder of the coating composition is cured. Superior tintability and adhesion to polycarbonate makes this coating particularly suitable for making tinted opthalmic lenses.Type: GrantFiled: January 10, 1997Date of Patent: October 27, 1998Assignee: General Electric CompanyInventors: George F. Medford, Gregory R. Gillette, Norio Sato
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Patent number: 5739181Abstract: Transparent substrates are rendered resistant to fogging by the application of a hardcoat composition comprising finely divided silica, a multi-functional olefin containing two or more olefinic moieties and one or more divalent oxyalkylene radicals having the formula:--((CX2).sub.n O).sub.x ((CX2)O).sub.y --where the sum of the x stoichiometric subscripts for each divalent oxyalkylene radical and the sum of the y stoichiometric subscripts for each divalent oxyalkylene radical when said sums are added together is ten or greater and the stoichiometric subscripts n and m are different and have values independently ranging from one to ten, where each X is independently selected from the group consisting of hydrogen, one to forty carbon atom monovalent hydrocarbon radicals and six to forty carbon atom monovalent aromatic hydrocarbon and an olefinically functionalized trialkoxysilane followed by curing.Type: GrantFiled: June 7, 1996Date of Patent: April 14, 1998Assignee: General Electric CompanyInventors: Igor V. Khudyakov, George F. Medford
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Patent number: 5614321Abstract: This invention provides a coating composition which utilizes a free radical initiator and an organic tintability additive which remains substantially unpolymerized even after the remainder of the coating composition is cured. Superior tintability and adhesion to polycarbonate makes this coating particularly suitable for making tinted opthalmic lenses.Type: GrantFiled: April 14, 1995Date of Patent: March 25, 1997Assignee: General Electric CompanyInventors: George F. Medford, Gregory R. Gillette, Norio Sato
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Patent number: 5607729Abstract: A gel-free silica acrylate curable coating composition made from one or more of soluble salts, soaps, amines, nonionic and anion surfactants, acids or mixtures thereof, and a method for producing these compositions.Type: GrantFiled: February 26, 1996Date of Patent: March 4, 1997Assignee: General Electric CompanyInventor: George F. Medford
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Patent number: 5468789Abstract: A method is provided for making curable silicon containing acrylate silicone hardcoat compositions which employ an anaerobic gelation inhibitor such as galvinoxyl. Devolatilizing of an aqueous/organic solvent mixture from the silicon containing acrylate hardcoat formulation is conducted in an inert atmosphere. Acrylate hardcoat compositions imparting improved weathering resistance to thermoplastic substrates also are provided.Type: GrantFiled: September 12, 1994Date of Patent: November 21, 1995Assignee: General Electric CompanyInventors: Larry N. Lewis, George F. Medford, Arnold Factor
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Patent number: 5242719Abstract: A method of making a UV curable hardcoat composition uses a strip-free process and produces hardcoats having good scribed tape-pull adhesion, high resistance to scratching and a low delta taber haze after abrading for 500 cycles with a 500 gram weight. UV curable hardcoat compositions are also provided which contain high solids contents and high mole percentages of photoinitiator. Compositions containing methoxypropanol as a water miscible alcohol and methylbenzoylformate as a photoinitiator exhibit high taber hardness and can be made by processes which obviate the need for a time and energy consuming solvent-strip step. The processes are not only shorter, but safer than processes which include a solvent-strip step.Type: GrantFiled: April 6, 1992Date of Patent: September 7, 1993Assignee: General Electric CompanyInventors: George F. Medford, Gregory R. Gillette
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Patent number: 5034061Abstract: A transparent and fast curing composition suitable for use as a shatter-resistant coating on a glass, porcelain, or ceramic surface, wherein the composition comprises:(A). at least about 62 to about 71 parts by weight of a solid, benzene soluble resin copolymer consisting essentially of R.sub.3 SiO.sub.1/2 units and SiO.sub.4/2 units,(B). from about 29 to about 38 parts by weight of an essentially cyclic free, polydiorganosiloxane, the viscosity of the polydiorganosiloxane having a value of from about 500 to about 1,000,000 centipoises at 25.degree. C., the total of (A) and (B) being 100 parts by weight;(C). an organopolysiloxane having silicon bonded hydrogen atoms,(D). a platinum containing catalyst in sufficient quantity to provide at least 0.1 part by weight of platinum for every one million parts by weight of the combined weight of (a), (b), and (c).The composition forms a coating which is transparent, fast curing, and stable at elevated temperatures.Type: GrantFiled: March 15, 1990Date of Patent: July 23, 1991Assignee: General Electric CompanyInventors: Thomas F. Maguire, George F. Medford
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Patent number: 4988779Abstract: Compositions curable to pressure sensitive adhesives are disclosed which comprise from 30 to 50 parts of a vinyl endblocked polydiorganosiloxane fluid having a viscosity from 500 to 10,000 centipoise at 25.degree. C., from 50 to 70 parts of a benzene soluble resin copolymer havingR.sub.3 SiO.sub.1/2 units and SiO.sub.4/2 units,an organopolysiloxane having silicon bonded hydrogen atoms for the purpose of curing the composition and developing the PSA properties, and a platinum catalyst for the curing process.Type: GrantFiled: April 17, 1989Date of Patent: January 29, 1991Assignee: General Electric CompanyInventors: George F. Medford, Donald S. Johnson
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Patent number: 4800127Abstract: Thermal shock resistant silicone coating formulations are disclosed to contain polydiorganosiloxane fluid, silicone resin and mica.Type: GrantFiled: March 26, 1987Date of Patent: January 24, 1989Assignee: General Electric CompanyInventors: William T. Saad, George F. Medford
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Patent number: 4780338Abstract: Solventless silicone coating compositions are disclosed which contain a fluid silicone resin and a polydiorganosiloxane fluid.Type: GrantFiled: March 26, 1987Date of Patent: October 25, 1988Assignee: General Electric CompanyInventors: William T. Saad, George F. Medford
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Patent number: 4401718Abstract: A method for adhering a second silicone resin hard coating composition to the surface of a scratched or marred first silicone resin hard coating composition comprising etching the surface of the first hard coating composition with a caustic solution, rinsing and drying said first hard coating composition, applying a curable second silicone resin hard coating composition to said first silicone resin hard coating composition, and curing said second silicone resin hard coating composition. A tint can be applied to a theretofore clear substrate by including a tint or dye in the second silicone resin hard coating composition.Type: GrantFiled: October 29, 1982Date of Patent: August 30, 1983Assignee: General Electric CompanyInventor: George F. Medford
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Patent number: 4328137Abstract: There is disclosed a method for effecting the controlled rapid condensation of silanol radicals in silanol-containing organopolysiloxanes such as silicone resins. The process is effected by catalyzing such resin with 5 to 350 ppm stannous salt or soap; heating the catalyzed resin until a preselected viscosity is obtained; generating the first catalyst with a relatively moderate second metal soap catalyst, whereupon a condensed or bodied resin can be diluted to a preselected weight percent solids.Type: GrantFiled: June 16, 1980Date of Patent: May 4, 1982Assignee: General Electric CompanyInventor: George F. Medford