Patents by Inventor Hideaki Arai

Hideaki Arai 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 material containing a high boiling solvent
    Patent number: 4326022
    Abstract: A high boiling solvent useful in silver halide materials is described by the following general formula: ##STR1## wherein R.sub.1 represents an alkyl radical, and each of R.sub.2 and R.sub.3 represent an aryl radical.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: April 20, 1982
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kenji Ito, Katsumi Matsuura, Hiroshi Sugita, Toshihiko Kimura, Hideaki Arai
  • Coated developer carrier for electrophotography
    Patent number: 4272601
    Abstract: Disclosed are carrier compositions for electrophotographic developers comprising core particles coated with a mixture of a resin and an organic surfactant having at least one carbon-fluorine bond and at least one functional group having an affinity for the resin. An intermediate resin layer may be present on the core particles, which themselves may be metal, glass or silicon dioxide, e.g.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: June 9, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Tokura, Keiji Sato, Makoto Tomono, Sadatugu Terada, Hideaki Arai