Patents by Inventor Shizuharu Waatanabe

Shizuharu Waatanabe 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).

  • Photoreactive resin composition and method of manufacturing circuit board and ceramic multilayer substrate using the resin composition
    Patent number: 6790596
    Abstract: A photoreactive resin composition having high sensitivity and causing less gelation, and methods of manufacturing a circuit board and a ceramic multilayer substrate having a high-resolution wiring pattern and via holes by a photolithography process using the photoreactive resin composition are described. The photoreactive resin composition contains an inorganic powder containing a polyvalent metal powder and/or a polyvalent metal oxide powder, an alkali-soluble first polymer having an ethylenically unsaturated double bond, a monomer having an ethylenically unsaturated double bond, a photoreaction initiator, an organic solvent, and a second polymer having a pyrrolidone ring in a side chain.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: September 14, 2004
    Assignee: Murata Manufacturing Co., Ltd
    Inventors: Masahiro Kubota, Michiaki Iha, Shizuharu Waatanabe
  • Photoreactive resin composition and Method of manufacturing circuit board and ceramic multilayer substrate using the resin composition
    Publication number: 20030143486
    Abstract: A photoreactive resin composition having high sensitivity and causing less gelation, and methods of manufacturing a circuit board and a ceramic multilayer substrate having a high-resolution wiring pattern and via holes by a photolithography process using the photoreactive resin composition are described. The photoreactive resin composition contains an inorganic powder containing a polyvalent metal powder and/or a polyvalent metal oxide powder, an alkali-soluble first polymer having an ethylenically unsaturated double bond, a monomer having an ethylenically unsaturated double bond, a photoreaction initiator, an organic solvent, and a second polymer having a pyrrolidone ring in a side chain.
    Type: Application
    Filed: October 11, 2002
    Publication date: July 31, 2003
    Inventors: Masahiro Kubota, Michiaki Iha, Shizuharu Waatanabe