Patents by Inventor Kazunari Okumura

Kazunari Okumura 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).

  • Microwave firing furnace and microwave firing method
    Publication number: 20030205573
    Abstract: A microwave firing furnace comprises microwave heating means and a furnace chamber for holding a material to be fired containing an organic binder. A carrier gas introduction pipe introduces a carrier gas that contains oxygen at a concentration lower than that of the air to suppress the burning of the organic binder contained in the material being fired.
    Type: Application
    Filed: April 8, 2003
    Publication date: November 6, 2003
    Inventors: Kazunari Okumura, Akira Kagohashi, Akira Nishio
  • Microwave sintering furnace and microwave sintering method
    Publication number: 20030071037
    Abstract: A microwave sintering furnace and a microwave sintering method are disclosed, in which the object to be sintered develops no cracking or deformation in the degreasing process. A microwave sintering furnace (1) comprises a furnace body (2) containing an object (S) to be sintered, a unit (3, 4) for generating and introducing microwaves into the furnace body, a unit (8) for supplying a degreasing gas into the furnace body (2), and a unit (11) for heating the degreasing gas before it reaches the object (S) to be sintered.
    Type: Application
    Filed: September 4, 2002
    Publication date: April 17, 2003
    Inventors: Motoyasu Sato, Sadatsugu Takayama, Masatoshi Mizuno, Kazunari Okumura, Akira Kagohashi, Akira Nishio, Toshio Sato, Hiroyuki Matsuo, Hiromichi Ohtaki, Yukio Kishi
  • Ceramic honeycomb structure
    Patent number: 4233351
    Abstract: A ceramic honeycomb structure is provided with a plurality of open passages extending therethrough in an axial direction thereof. The wall thickness of at least one part of the open passages formed in an annular portion along an outer peripheral surface of the structure is made larger than that of the other open passages formed in the other portion than the annular portion, and the structure has excellent mechanical strength and thermal shock strength.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: November 11, 1980
    Assignee: Nippon Soken, Inc.
    Inventors: Kazunari Okumura, Shinichi Yamamoto, Zituo Suzuki