Patents by Inventor Tsutomu Kakuda

Tsutomu Kakuda 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).

  • Inorganic substance composition and process for producing same
    Patent number: 4049593
    Abstract: An inorganic substance composition comprising at least 50% by weight of a finely divided inorganic substance and 2 to 50% by weight of a fiber forming organic polymeric material and having a specific surface area of more than 2 m.sup.2 /g is described. The composition is prepared by preparing a liquid suspension from the inorganic substance, the organic polymeric material and a solvent; heating the liquid suspension to at least 100.degree. C to dissolve the organic polymeric material in the solvent; and then extruding the heated liquid suspension at a pressure equal to or higher than the vapor pressure of the solvent through an orifice into a zone of a lower pressure to evaporate the solvent.
    Type: Grant
    Filed: October 19, 1976
    Date of Patent: September 20, 1977
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hiroshi Sato, Munehiro Okumura, Fujio Itani, Shouji Fujii, Tsutomu Kakuda, Hiroshi Nakatui