Patents by Inventor Hiroharu Masano

Hiroharu Masano 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).

  • Plastic filter for a photograph developing apparatus
    Patent number: 6180015
    Abstract: A plastic filter for a photograph developing apparatus, which is obtained by sinter-forming a thermoplastic material and which has a porosity of from 30 to 60 vol %, a filtration precision of a level capable of capturing foreign matters of at least 30 &mgr;m, and a pressure loss of at most 20 mmAq at a dry air flow rate of 1 m3/m2·min.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: January 30, 2001
    Assignee: Mitsubishi Plastics, Inc.
    Inventors: Yosuke Egawa, Hiroharu Masano, Kanji Ueyama
  • Porous plastic filter and process for its production
    Patent number: 5804074
    Abstract: A porous plastic filter for separating fine particles, which is obtained by sinter-forming particles of thermoplastic material, wherein the contact angle to water of at least one surface of the porous plastic filter is at least 60.degree., preferably at least 90.degree., and at least a thermoplastic material having an average particle size within a range of from 5 to 90 .mu.m, is used.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: September 8, 1998
    Assignee: Mitsubishi Plastics, Inc.
    Inventors: Yoshimi Takiguchi, Yosuke Egawa, Takayuki Watanabe, Hiroharu Masano