Patents by Inventor Kiichi Nagai

Kiichi Nagai 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).

  • Novel resinous material
    Patent number: 4039710
    Abstract: A method for preparing a novel compound, i.e. a resinous material, characterized in that an epoxy compound is allowed to react with ammonium salt or a metal salt (for example, lithium salt, sodium salt, potassium salt, magnesium salt, etc.) of polyglutamic acid. The resulting reaction product is useful in a method for treating shaped materials especially polyester textiles. In this method the shaped materials are treated with the novel resinous material to improve the appearance and handling characteristics thereof. A process for providing a wooly finish on polyester textiles is characterized by treating textiles (including polyester knittings and mixed spun fabrics or knittings or mixed woven fabrics or knittings) in a bath of an emulsified mixed solution of an epoxy compound and a metal salt of polyglutamic acid containing a catalyst, and carrying out a heat-treatment of the resulted textiles after pre-drying.
    Type: Grant
    Filed: February 28, 1975
    Date of Patent: August 2, 1977
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yasuo Fujimoto, Keizo Tatsukawa, Koichi Nagaoka, Masayuki Nagumo, Kiichi Nagai
  • Novel resinous material by reaction of epoxy compounds and polyglutamic acid salts
    Patent number: 3945952
    Abstract: A method for preparing a novel compound, i.e. a resinous material, characterized in that an epoxy compound is allowed to react with ammonium salt or a metal salt (for example, lithium salt, sodium salt, potassium salt, magnesium salt, etc.) of polyglutamic acid. The resulting reaction product is useful in a method for treating shaped materials especially polyester textiles. In this method the shaped materials are treated with the novel resinous material to improve the appearance and handling characteristics thereof. A process for providing a wooly finish on polyester textiles is characterized by treating textiles (including polyester knittings and mixed spun fabrics or knittings or mixed woven fabrics or knittings) in a bath of an emulsified mixed solution of an epoxy compound and a metal salt of polyglutamic acid containing a catalyst, and carrying out a heat-treatment of the resulted textiles after pre-drying.
    Type: Grant
    Filed: September 27, 1972
    Date of Patent: March 23, 1976
    Assignee: Kyowa Hakko Kogyo Co., Ltd
    Inventors: Yasuo Fujimoto, Keizo Tatsukawa, Koichi Nagaoka, Masayuki Nagumo, Kiichi Nagai