Patents by Inventor Michael Paul Cunningham

Michael Paul Cunningham 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).

  • Method of providing a range of conformalities for optical recording layers
    Patent number: 5959960
    Abstract: A method of coating an optical recording layer on a transparent grooved substrate is disclosed. The recording layer is coated from a mixture of a primary and a secondary solvent. The solvent mixture provides a wide range of conformalities for optical recording layers.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: September 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: Susan Starr Collier, Michael Paul Cunningham, Csaba Andras Kovacs
  • Optical recording elements having recording layers containing mixtures of low k metallized formazan and cyanine dyes
    Patent number: 5922429
    Abstract: An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye and cyanine dye and the unrecorded layer is such that the real part of the refractive (n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.03 to 0.07.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: July 13, 1999
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Michael Paul Cunningham, Ramanuj Goswami
  • Dye solution containing hindered solvent functionality
    Patent number: 5804352
    Abstract: A dye solution comprising a laser recordable dye and a solvent for the dye that has (a) a solvent functional group selected from esters, ketones and ethers; and (b) the solvent functional group has as hindering groups (i) at least one t-butyl group on one side thereof or (ii) two groups on opposite sides thereof selected from the group consisting of isoamyl, t-butyl, isobutyl and isopropyl; provided that both groups cannot be isopropyl and (c) the hindering groups are adjacent to the solvent functional group.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: September 8, 1998
    Assignee: Eastman Kodak Company
    Inventors: Michael Paul Cunningham, Thomas Michael Smith
  • Optical recording layers containing no k metallized formazan dyes mixed with symmetrical and unsymmetrical cyanine dyes
    Patent number: 5773193
    Abstract: An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye with symmetrical and unsymmetrical cyanine dyes. The unrecorded layer is such that the real part of the refractive index (n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.00 to 0.02.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: June 30, 1998
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Michael Paul Cunningham, Ramanuj Goswami
  • Mixtures of low K metallized formazan dyes with symmetrical and unsymmetrical cyanine dyes
    Patent number: 5731054
    Abstract: A mixture of low k metallized formazan dye with symmetrical and unsymmetrical cyanine dyes is disclosed. The mixture is useful in optical recording layers of optical recording elements.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: March 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Michael Paul Cunningham, Ramanuj Goswami
  • Sensitizers for photocrosslinkable polymers
    Patent number: 4119466
    Abstract: Merocyanine dyes comprising 2-(heterocyclylcarbonylmethylene)thiazolines and selenazolines and 2-[di(heterocyclylcarbonyl)methylene]thiazolines and selenazolines are efficient sensitizers for light-sensitive unsaturated materials such as unsaturated vesiculators which release a gas upon exposure to radiation, photocrosslinkable unsaturated polymers, and azides such as photocrosslinkable polymeric azides used in photomechanical resists and lithographic plates.
    Type: Grant
    Filed: August 31, 1977
    Date of Patent: October 10, 1978
    Assignee: Eastman Kodak Company
    Inventors: James Albert Van Allan, Michael Paul Cunningham, Donald Paul Specht, Samir Yacoub Farid
  • Sensitizers for photocrosslinkable polymers
    Patent number: 4062686
    Abstract: Merocyanine dyes comprising 2-(heterocyclylcarbonylmethylene)thiazolines and selenazolines and 2-[di(heterocyclylcarbonyl)methylene]thiazolines and selenazolines are efficient sensitizers for light-sensitive unsaturated materials such as unsaturated vesiculators which release a gas upon exposure to radiation, photocrosslinkable unsaturated polymers, and azides such as photocrosslinkable polymeric azides used in photomechanical resists and lithographic plates.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: December 13, 1977
    Assignee: Eastman Kodak Company
    Inventors: James Albert Van Allan, Michael Paul Cunningham, Donald Paul Specht, Samir Yacoub Farid