Patents by Inventor Katsumi Fujinuma

Katsumi Fujinuma 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).

  • Emergency mask
    Patent number: 4677976
    Abstract: The disclosed emergency mask comprises a hood, a face piece in the hood for respiration, and a canister-holder secured to the outer surface of the hood and communicating with the face piece. The canister-holder has an inlet opening to hold a canister containing antidote and check valves to prevent the user's expiration from entering the canister.
    Type: Grant
    Filed: March 27, 1984
    Date of Patent: July 7, 1987
    Assignees: Toyo Cci Kabushiki Kaisha, Katsumi Fujinuma
    Inventors: Katsumi Fujinuma, Tsuneyoshi Takase, Yoriyuki Hayashi
  • Canister-holding housing of emergency mask
    Patent number: D288731
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: March 10, 1987
    Inventor: Katsumi Fujinuma