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).

  • Publication number: 20040149026
    Abstract: 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: Application
    Filed: February 5, 2003
    Publication date: August 5, 2004
    Applicant: General Electric Company
    Inventors: Radislav Potyrailo, George F. Medford, James Cawse
  • Patent number: 5958598
    Abstract: 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: Grant
    Filed: February 5, 1998
    Date of Patent: September 28, 1999
    Assignee: General Electric Company
    Inventors: Igor V. Khudyakov, George F. Medford
  • Patent number: 5827923
    Abstract: 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: Grant
    Filed: January 10, 1997
    Date of Patent: October 27, 1998
    Assignee: General Electric Company
    Inventors: George F. Medford, Gregory R. Gillette, Norio Sato
  • Patent number: 5739181
    Abstract: 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: Grant
    Filed: June 7, 1996
    Date of Patent: April 14, 1998
    Assignee: General Electric Company
    Inventors: Igor V. Khudyakov, George F. Medford
  • Patent number: 5614321
    Abstract: 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: Grant
    Filed: April 14, 1995
    Date of Patent: March 25, 1997
    Assignee: General Electric Company
    Inventors: George F. Medford, Gregory R. Gillette, Norio Sato
  • Patent number: 5607729
    Abstract: 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: Grant
    Filed: February 26, 1996
    Date of Patent: March 4, 1997
    Assignee: General Electric Company
    Inventor: George F. Medford
  • Patent number: 5468789
    Abstract: 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: Grant
    Filed: September 12, 1994
    Date of Patent: November 21, 1995
    Assignee: General Electric Company
    Inventors: Larry N. Lewis, George F. Medford, Arnold Factor
  • Patent number: 5242719
    Abstract: 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: Grant
    Filed: April 6, 1992
    Date of Patent: September 7, 1993
    Assignee: General Electric Company
    Inventors: George F. Medford, Gregory R. Gillette
  • Patent number: 5034061
    Abstract: 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: Grant
    Filed: March 15, 1990
    Date of Patent: July 23, 1991
    Assignee: General Electric Company
    Inventors: Thomas F. Maguire, George F. Medford
  • Patent number: 4988779
    Abstract: 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: Grant
    Filed: April 17, 1989
    Date of Patent: January 29, 1991
    Assignee: General Electric Company
    Inventors: George F. Medford, Donald S. Johnson
  • Patent number: 4800127
    Abstract: Thermal shock resistant silicone coating formulations are disclosed to contain polydiorganosiloxane fluid, silicone resin and mica.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: January 24, 1989
    Assignee: General Electric Company
    Inventors: William T. Saad, George F. Medford
  • Patent number: 4780338
    Abstract: Solventless silicone coating compositions are disclosed which contain a fluid silicone resin and a polydiorganosiloxane fluid.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: October 25, 1988
    Assignee: General Electric Company
    Inventors: William T. Saad, George F. Medford
  • Patent number: 4401718
    Abstract: 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: Grant
    Filed: October 29, 1982
    Date of Patent: August 30, 1983
    Assignee: General Electric Company
    Inventor: George F. Medford
  • Patent number: 4328137
    Abstract: 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: Grant
    Filed: June 16, 1980
    Date of Patent: May 4, 1982
    Assignee: General Electric Company
    Inventor: George F. Medford