Patents by Inventor Shozo Nohara

Shozo Nohara 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 producing printed wiring board
    Patent number: 5919603
    Abstract: In an additive process for producing printed wiring boards, by using a developer comprising a chlorine-free organic solvent and an alkaline aqueous solution and as a resist material a copolymer of methacrylic acid and methyl methacrylate or the like, the production steps are simplified even if a substrate having a large area is used, and abolishment of chlorine-containing organic solvent as a developer becomes possible.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: July 6, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Miyazaki, Haruo Akahoshi, Shozo Nohara, Kenzi Kikuta, Toshiaki Ishimaru
  • Process for producing printed wiring board
    Patent number: 5438751
    Abstract: In an additive process for producing printed wiring boards, by using a developer comprising a chlorine-free organic solvent and an alkaline aqueous solution and as a resist material a copolymer of methacrylic acid and methyl methacrylate or the like, the production steps are simplified even if a substrate having a large area is used, and abolishment of chlorine-containing organic solvent as a developer becomes possible.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: August 8, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Miyazaki, Haruo Akahoshi, Shozo Nohara, Kenzi Kikuta, Toshiaki Ishimaru