Patents by Inventor Richard C. Cotner

Richard C. Cotner 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: 20160311080
    Abstract: An abrasive comprising abrasive particles and an adhesive matrix is provided, with the abrasive particles being distributed in the adhesive matrix, wherein the abrasive particles comprise aluminum hydroxide abrasive particles, and the adhesive matrix comprises a triacrylate, a diacrylate and an initiator. The abrasive article prepared using the abrasive of the present invention has proper wear resistance and can be used to a clean LCD panel surface without scratching the ITO coating on an LCD panel surface.
    Type: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Inventors: Edward J. Woo, Jianping Zhou, Richard C. Cotner, Craig F. Lamphere, Jaime A. Martinez
  • Patent number: 5494776
    Abstract: The present invention provides a photographic element developed in the presence of a hydrazide which displays high contrast but low levels of pepper fog. The novel silver halide photographic elements comprise, in at least one layer of the element, a pepper reducing agent. The pepper reducing agent of this invention is a compound having at least one nitrogen containing, heterocyclic ring group and at least one carbonyl group in or attached to said ring. The pepper reducing agents preferably are selected from the group containing 2,5-piperazinediones; glycol urils; 2,3-pyrazinedicarboxamides; 3-iminoisoindolinones; or glutarimides.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: February 27, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard C. Cotner
  • Patent number: 5493327
    Abstract: Method and apparatus for producing image reproducing materials, especially newspaper printing plates or proofs having a predetermined image. A photothermographic material having a polymeric base supporting at least one photosensitive layer, capable of being developed by heat, is exposed to radiation at a first wavelength modulated in accordance with the predetermined image to produce a latent image representing the predetermined image in the photothermographic material. The photosensitive layer contains an antihalation colorant in an amount greater than 0.02 percent by weight. The antihalation colorant is active to radiation in the first wavelength and is transparent to radiation at a second wavelength. The photothermographic material is heated to develop the latent image in the photothermographic material. The image reproducing material is imaged with radiation at the second wavelength using the photothermographic material as a mask.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: February 20, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William G. McCallum, Richard C. Cotner
  • Patent number: 5415975
    Abstract: A silver halide photographic emulsion comprising a hydrophilic colloid binder, negative-acting silver halide grains, a hydrazine, and a contrast-promoting amount of a compound selected from the group consisting of 3-indazolinones, 4(3H)-pyrimidones, urazoles, 2-pyrazolin-5-ones, and 3-pyrazolin-5-ones.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: May 16, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard C. Cotner
  • Patent number: 5364733
    Abstract: A photothermographic element containing a transparent substrate having one major surface thereof containing the following layers sequentially coated thereon: an image-receiving layer; an opacifying layer; a first dry silver layer; an interlayer containing thermoplastic polymer; a second dry silver layer; an interlayer containing thermoplastic polymer; and a third dry silver layer, wherein the first, second, and third dry silver layers each contain a light-insensitive, reducible silver source; light-sensitive silver halide, and as a reducing agent for the light-insensitive, reducible silver source, a material oxidizable to a colored dye whose color differs from that capable of being formed in each other dry silver layer, each of the dry silver layers being individually sensitized to light of different wavelengths.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: November 15, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Raymond J. Kenney, Takuzo Ishida, Richard C. Cotner
  • Patent number: 5278024
    Abstract: A photothermographic composite structure for use in a solvent-free dye thermal positive imaging diffusion-transfer process comprising:(a) an image-receiving element comprising a polymeric dyeable image-receiving layer having a glass transition temperature in the range of 20.degree. to 200.degree. C., and(b) strippably adhered to said image-receiving element, an imageable photothermographic element comprising in at least one layer thereof a binder, a silver source material, photosensitive silver halide in catalytic proximity to said silver source material, and a formazan dye.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: January 11, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard C. Cotner, David C. Weigel, Kumars Sakizadeh
  • Patent number: 5264321
    Abstract: Various photothermographic elements are provided containing a transparent substrate; image receiving layers; dry silver layers; interlayers; and a translucent or opacifying layer. The translucent or opacifying layer can occupy a variety of positions in the photothermographic element relative to the dry silver layers. The translucent or opacifying layers serve to help produce a reflection print upon exposure of the photothermographic element to actinic light and subsequent heating of the exposed element for image development and dye transfer.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: November 23, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Raymond J. Kenney, Takuzo Ishida, Richard C. Cotner
  • Patent number: 5206112
    Abstract: A photothermographic composite structure for use in a solvent-free dye thermal positive imaging diffusion-transfer process comprising:(a) an image-receiving element comprising a polymeric dyeable image-receiving layer having a glass transition temperature in the range of 20.degree. to 200.degree. C., and(b) strippably adhered to said image-receiving element, an imageable photothermographic element comprising in at least one layer thereof a binder, a silver source material, photosensitive silver halide in catalytic proximity to said silver source material, and a formazan dye.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: April 27, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard C. Cotner, David C. Weigel, Kumars Sakizadeh