Patents by Inventor Kimitaka Kuma

Kimitaka Kuma 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).

  • Flame retardant and flame retardant resin composition containing it
    Patent number: 6207735
    Abstract: A flame retardant comprising (A) ethylenediamine-containing zinc phosphate and (B) a metal compound.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: March 27, 2001
    Assignee: Tosch Corporation
    Inventors: Kimitaka Kuma, Kenji Koyama, Fumio Okizaki, Yasumi Tanaka
  • Flame retardant and flame retardant resin composition formulated with the same
    Patent number: 5994435
    Abstract: The subject of the invention is to provide a new high-performance flame retardant having excellent flame resistant effect and smoke-suppressing effect and generating no hazardous gas, and a new flame retardant resin-composition used it. As a means for solution, a flame retardant comprising ethylenediamine-containing zinc phosphate and other phosphorus-containing compound is formulated in amounts of 10 to 200 parts by weight to 100 parts by weight of resin.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: November 30, 1999
    Assignee: Tosoh Corporation
    Inventors: Kimitaka Kuma, Kenji Koyama, Nobuhiro Fujita, Takumi Kagawa, Fumio Okisaki, Keiji Itabashi
  • Ito sintered body and method of manufacturing the same
    Patent number: 5401701
    Abstract: An ITO sintered body according to the present invention has a density thereof of between 90 and 100% and a sintering particle size of between 1 and 20 .mu.m. A proportion of (In.sub.0.6 Sn.sub.0.4).sub.2 O.sub.3 in the ITO sintered body is 10% or below. Such an ITO sintered body is manufactured by mixing an indium oxide powder, whose BET surface area is between 15 and 30 m.sup.2 /g, a BET size/a crystallite size is 2 or below, and an average primary particle size is between 0.03 and 0.1 .mu.m, with tin oxide whose BET surface area is 3 m.sup.2 /g or below, and then by sintering the mixture.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: March 28, 1995
    Assignee: Tosoh Corporation
    Inventors: Nobuhiro Ogawa, Kimitaka Kuma, Chikara Uema, Kazuaki Yamamoto, Ryoji Yoshimura, Takashi Mouri