Patents by Inventor Yasuhiko Numano

Yasuhiko Numano 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).

  • Humidity-retaining mask
    Patent number: 5007114
    Abstract: A humidity-retaining mask includes a foldable mask body made of humidity-absorbing sheet material which is folded into a honeycomb structure when the mask is used. The mask body has a recessed portion on the upper side thereof to receive a user's nostril, and ear traps attached to the mask body.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: April 16, 1991
    Assignee: Japan Air Lines Co., Ltd.
    Inventor: Yasuhiko Numano