Patents by Inventor Obayashi Tsutomu

Obayashi Tsutomu 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).

  • White cover sheet material capable of reflecting ultraviolet rays
    Patent number: 4347284
    Abstract: A white cover sheet material capable of reflecting ultraviolet rays, comprises at least one outer surface layer thereof which comprises (A) a substantially colorless matrix material comprising a thermoplastic polymer material and (B) a white ultraviolet ray-reflecting agent comprising ZrO.sub.2, the cover sheet material being difficult to be distinguished from snow surface not only by naked eye, but also, by an ultraviolet ray inspecting device.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: August 31, 1982
    Assignee: Hiraoka & Co., Ltd.
    Inventors: Obayashi Tsutomu, Endou Mituo