Patents by Inventor Hisao Sato

Hisao Sato 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).

  • Patent number: 4182474
    Abstract: A stapler including a staple magazine loaded with conventional staples and a tag magazine detachably connected to the bottom of the staple magazine and loaded with a stick of tags which are detachably connected to each other in a predetermined overlapping relationship in series. When a lever is depressed, a staple driver drives the foremost staple of the staple stick in the staple magazine into the foremost one of the stick of tags in the tag magazine, detaching it from the stick, and further into one or more works so as to attach the tag to the work or works. In addition, various tags adapted for use with the stapler are disclosed.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: January 8, 1980
    Inventor: Hisao Sato
  • Patent number: 3980841
    Abstract: An acoustic material suitable for use as a speaker edge comprises an expanded plastic and minute collagen fibers wherein the content of the collagen fibers is 15 - 40% based on the weight of the expanded plastic and the length of the fibers is equal to or less than 1 mm.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: September 14, 1976
    Assignees: K.K. Fujita Shoten, Hisao Sato
    Inventors: Hiroshi Okamura, Hisao Sato, Isamu Iwasaki