Patents by Inventor Dana D. Field

Dana D. Field 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).

  • Coating agent for ink jet recording materials and ink jet recording material
    Patent number: 6548182
    Abstract: The present invention provides: an ink jet recording material which displays sufficient water resistance and further, excellent definition of initial images; and a coating agent therefor to give such an ink jet recording material. A first coating agent for ink jet recording materials, according to the present invention, comprises: an aqueous polymer having a carboxyl group; and a water-soluble polymer having an oxazoline group as a crosslinking agent. A second coating agent for ink jet recording materials, according to the present invention, comprises a polymer and a crosslinking agent, wherein the polymer has both a structural unit, as formed by ring-opening polymerization of an oxazoline compound, and a carboxyl group.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: April 15, 2003
    Assignees: Esprit Chemical Co., Nippon Shokubai Co., Ltd.
    Inventors: Dana D. Field, Yoshinobu Yamamoto, Yoshihiro Arita, Norihiro Wakao