Patents by Inventor Arthur C. Shor

Arthur C. Shor 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).

  • Process for alleviating bleed in printed elements
    Patent number: 5555008
    Abstract: A process for alleviating bleed and improving color in printed elements comprises applying an anionic printing liquid and a cationic printing liquid to a substrate adjacent to one another, wherein at least one of the printing liquids contains a polymer and reacting the anionic and cationic printing liquids with one another; wherein the color integrity of the anionic and cationic printing liquids is maintained.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: September 10, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John L. Stoffel, Arthur C. Shor, Harry J. Spinelli, Sheau-Hwa Ma, Howard Matrick, Mark L. Choy, Loren E. Johnson
  • Amine-containing block polymers for pigmented ink jet inks
    Patent number: 5272201
    Abstract: An aqueous ink jet ink composition having improved dispersion stability comprises an aqueous carrier medium, a pigment having a pH value below 7.0, and an AB block polymer consisting of an A block comprising a hydrophobic polymer having at least one basic amine functional groups, and a B block comprising a hydrophilic polymer selected from the group consisting of nonionic polymers and polymers containing acidic functional groups.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: December 21, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sheau-Hwa Ma, Walter R. Hertler, Harry J. Spineli, Arthur C. Shor
  • Aqueous pigmented inks for ink jet printers
    Patent number: 5221334
    Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment, and an effective amount of a surfactant sufficient to decrease the drying time of the ink. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: June 22, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sheau-Hwa Ma, Howard Matrick, Arthur C. Shor, Harry J. Spinelli, Michele E. Shepard, Jerome Hochberg
  • Aqueous pigmented inks for ink jet printers
    Patent number: 5085698
    Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, and pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sheau-Hwa Ma, Howard Matrick, Arthur C. Shor, Harry J. Spinelli
  • Acrylic pigment dispersants made by group transfer polymerization
    Patent number: 4656226
    Abstract: A pigment dispersant comprising an AB block copolymer preferably of polymethyl methacrylate and glycidyl methacrylate made by group transfer polymerization, reacted with polar groups, preferably 4-nitrobenzoic acid.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: April 7, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Clyde S. Hutchins, Arthur C. Shor