Patents by Inventor David Joseph Oldfield

David Joseph Oldfield 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).

  • Color pigmented ink jet ink set
    Patent number: 5738716
    Abstract: A color ink jet ink set for color printing is disclosed. The set comprises:(a) a first ink comprises a carrier and a bridged aluminum phthalocyanine pigment as a cyan colorant;(b) a second ink comprising a carrier and a quinacridone pigment as a magenta colorant; and(c) a third ink comprising a carrier and a non-benzidine yellow pigment.A fourth ink comprising pigment black 7 may also be included in the set.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: April 14, 1998
    Assignee: Eastman Kodak Company
    Inventors: Domenic Santilli, Douglas Eugene Bugner, Alexandra DeLauro Bermel, David Joseph Oldfield
  • Cyan ink jet pigment set
    Patent number: 5679142
    Abstract: The invention provides an ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the cyan pigment has a density between 0.66 and 0.94 at 600 nm and a density between 0.83 and 1.0 at 610 nm. Such a pigment set enables an increase in the color gamut obtainable for ink jet imaging.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: October 21, 1997
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth McInerney, David Joseph Oldfield, Douglas Eugene Bugner, Alexandra DiLauro Bermel, Domenic Santilli
  • Cyan and magenta pigment set
    Patent number: 5679139
    Abstract: The invention provides a pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the cyan pigment has a density between 0.66 and 0.94 at 600 nm and a density between 0.83 and 1.0 at 610 nm, and the magenta pigment has a density between 0.25 and 0.93 at 520 nm, a density between 0.9 and 1.0 at 540 nm, and a density between 0.9 and 1.0 at 560 nm. Such a pigment set enables an increase in the color gamut available for imaging.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: October 21, 1997
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth McInerney, David Joseph Oldfield, Douglas Eugene Bugner, Alexandra DiLauro Bermel, Domenic Santilli
  • Magenta and yellow dye set for imaging systems
    Patent number: 5679140
    Abstract: The invention provides a dye set comprising a magenta dye, a yellow dye, and a cyan dye wherein the normalized spectral transmission density distribution curve of the magenta dye has a density between 0.25 and 0.93 at 520 nm, a density between 0.9 and 1.0 at 540 nm, and a density between 0.9 and 1.0 at 560 nm and the yellow dye has a density between 0.9 and 1.0 at 450 nm and a density between 0.8 and 1.0 at 470 nm. Such a dye set enables an increase in the color gamut obtainable for imaging.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: October 21, 1997
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth McInerney, David Joseph Oldfield
  • Magenta ink jet pigment set
    Patent number: 5679141
    Abstract: The invention provides an ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the magenta pigment has a density between 0.25 and 0.93 at 520 nm, a density between 0.9 and 1.0 at 540 nm, and a density between 0.9 and 1.0 at 560 nm. Such a pigment set enables an increase in the color gamut obtainable for ink jet imaging.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: October 21, 1997
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth McInerney, David Joseph Oldfield, Douglas Eugene Bugner, Alexandra DiLauro Bermel, Domenic Santilli