Patents by Inventor Syoji Imao

Syoji Imao 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).

  • Flake- or sliver-like porous structure of polymeric material and process of producing same, and process of producing sheet-like structure therefrom
    Patent number: 4146510
    Abstract: Flake- or sliver-like porous structures of a polymeric material heavily loaded with a finely divided inorganic substance are prepared by spurting a mixture of the polymeric and finely divided inorganic components in a solvent. The products have many fine, irregular voids. The thickness of walls forming such voids is 5.mu. or less. The products are especially useful for producing sheet-like structures therefrom by beating and/or refining them followed by general paper making procedures. The sheets, when calendered, have a high initial modulus and improved dimensional stability.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: March 27, 1979
    Assignee: Mitsubishi Rayon Company Limited
    Inventors: Masahiko Miyanoki, Takeshi Uotani, Fujio Itani, Toshi Yoshihara, Masayuki Igawa, Munehiro Okumura, Syoji Imao, Yoshiaki Taniyama
  • Process for continuously producing composite porous flakes
    Patent number: 3944639
    Abstract: A process is disclosed whereby porous flakes usable for making paper-like sheets are produced by melting a 10 to 75 parts by weight of thermoplastic polymer, dispersing 25 to 90 parts by weight of finely divided inorganic particles in a solvent capable of dissolving the polymer in an amount of 80 to 95% based on a total weight of the polymer, the inorganic particles and the solvent, at room temperature or lower to prepare a slurry.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: March 16, 1976
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yoshihiro Osajima, Syoji Imao, Tokuo Shinomiya, Sirou Mihara, Michisuke Edamatsu