Patents by Inventor Koichi Shibata

Koichi Shibata 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).

  • Patent number: 4400525
    Abstract: Disclosed is a novel polyglycidyl compound useful as polyfunctional epoxy resins excellent in adhesion, heat resistance and strength. This novel polyglycidyl compound has the general formula: ##STR1## (wherein ##STR2## A method for producing this polyglycidyl compound is also disclosed.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: August 23, 1983
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Ichiro Minato, Koichi Shibata, Kimiya Fujinami
  • Patent number: 4391958
    Abstract: Disclosed is a novel triamine derivative, particularly a ketimine or aldimine derivative derived from a triamine and a ketone or an aldehyde, which has the following general formula: ##STR1## [wherein ##STR2## X is hydrogen or a hydrocarbon radical of 1 to 8 carbon atoms; Y is a hydrocarbon radical of 1 to 8 carbon atoms; X and Y, together with their neighboring carbon atom, may form a 5- to 7-membered aliphatic hydrocarbon ring; and n is an integer of 1, 2 or 3].This novel triamine derivation is useful as a curing agent for epoxy resins or polyurethane resins.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: July 5, 1983
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Ichiro Minato, Koichi Shibata, Kimiya Fujinami
  • Patent number: 4389519
    Abstract: A composition for polyurethane adhesives comprising (1) a triisocyanate of the formula: ##STR1## wherein ##STR2## a modified product of said triisocyanate or an adduct of said triisocyanate having terminal isocyanate groups and (2) an active hydrogen compound exhibits excellent adhesion, especially between polyethylene terephthalates, polyolefins and metals, heat resistance and weatherability, and has low toxicity and can be solventless or light solid.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: June 21, 1983
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Kyuya Yamazaki, Sachio Igarashi, Koichi Shibata
  • Patent number: 4338256
    Abstract: The present invention provides novel triisocyanate compounds of the formula: ##STR1## the production thereof and the use thereof for polyurethane resins, especially, for solvent-free or high solids polyurethane coatings.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: July 6, 1982
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Kimiya Fujinami, Ichiro Minato, Koichi Shibata