Patents by Inventor Yoshioki Ohkubo

Yoshioki Ohkubo 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).

  • Photographic support
    Patent number: 5556739
    Abstract: A support for photographic use comprised of at least two polyester layers is disclosed, which comprises a first layer containing a first polyester and a second layer containing a second polyester adjacent to the first layer, the first polyester comprising a first monomer unit from a polyalkylene glycol and a second monomer unit from an aromatic dicarboxylic acid having a metal sulfonate group, wherein the difference between the second monomer unit content of the first polyester and that of the second polyester, .DELTA.SIP is not more than 5.5 mol %, the second monomer unit content being expressed based on the total content of monomer units from dicarboxylic acids contained in the polymer.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: September 17, 1996
    Assignee: Konica Corporation
    Inventors: Kenji Nakanishi, Takatoshi Yajima, Hiromitsu Araki, Hideyuki Kobayashi, Yoshioki Ohkubo, Tetsutaro Hashimura, Hiroshi Naito