Patents by Inventor Tetsuhiko Nakahara

Tetsuhiko Nakahara 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).

  • Collection header pipe for filtration
    Patent number: D490497
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: May 25, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hiroyuki Okazaki, Tetsuhiko Nakahara, Manabu Yanou
  • Collection header for filtration
    Patent number: D490876
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: June 1, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hiroyuki Okazaki, Tetsuhiko Nakahara, Manabu Yanou