Patents by Inventor Ken Shinkai

Ken Shinkai 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).

  • Method of making silane-modified ethylene-type resin
    Patent number: 4320214
    Abstract: Zinc oxide is used during manufacture of silane-modified ethylene-type resin so that the resulting material changes little with the passage of time.
    Type: Grant
    Filed: December 14, 1978
    Date of Patent: March 16, 1982
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Harayama, Ken Shinkai, Hiroshi Takahashi, Masahiro Mizusako
  • Process for preparing foamed and crosslinked shaped articles having improved heat-sealability and foamable and crosslinkable polyethylene resin composition used therefor
    Patent number: 4252906
    Abstract: A process for preparing a foamed and crosslinked polyethylene resin shaped article having improved heat-sealability, which comprises melt-kneading (a) a silane-modified polyethylene resin, (b) a heat-decomposable blowing agent, (c) a silanol condensation catalyst, and (d) an organic peroxide at a temperature lower than the decomposition temperature of the heat-decomposable blowing agent (b), shaping the mixture, and heating the resulting foamable and crosslinkable shaped articles to the decomposition temperature of the heat-decomposable blowing agent or to a higher temperature thereby to foam and crosslink it; and a foamable and crosslinkable polyethylene resin composition used therefor.
    Type: Grant
    Filed: September 7, 1977
    Date of Patent: February 24, 1981
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Seiya Hosokawa, Ken Shinkai, Tateo Takasuka, Yutaka Ozaki
  • Foamable and crosslinkable polyethylene composition, process for its production, and process for producing crosslinked polyethylene foams using said composition
    Patent number: 4160072
    Abstract: A foamable and crosslinkable polyethylene composition comprising(a) modified polyethylene obtained by chemically bonding a silane compound containing at least one unsaturated group to polyethylene in the presence of a radical generator,(b) a zinc salt of a higher carboxylic acid, and(c) a heat-decomposable blowing agent, and ingredients (a), (b) and (c) having been melt-kneaded with one another at a temperature lower than the decomposition temperature of the heat-decomposable blowing agent.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: July 3, 1979
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Ken Shinkai, Norio Chiba, Yutaka Ozaki