Patents by Inventor Mitsunobu Haga

Mitsunobu Haga 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).

  • Plastic lenses and method of producing the same
    Patent number: 5989628
    Abstract: A plastic lens comprising the first acrylic hard coated layer formed on the outside surface of a plastic lens base and, on the inside surface, an antifogging coated layer while interposing of the second acrylic hard coated layer is obtained by coating both sides of a plastic lens base with an acrylic hard coating agent, masking the outside surface with a peelable masking agent (e.g., a coating composition containing poly(vinyl chloride) or a vinyl chloride-vinyl acetate copolymer), coating at least the inside surface with an antifogging agent, and removing the masking layer. As the hard coating agent or antifogging agent, use can be made of an ultraviolet-curable resin composition, and as the masking agent, a coating composition containing a poly-(vinyl chloride) or vinyl chloride-vinyl acetate copolymer may be employed.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: November 23, 1999
    Assignee: Daicel Abosisangyo Co., Ltd.
    Inventors: Mitsunobu Haga, Yoshio Onisawa, Kohei Shimizu
  • Plastic lenses and method of producing the same
    Patent number: 5985420
    Abstract: A plastic lens comprising the first acrylic hard coated layer formed on the outside surface of a plastic lens base and, in the inside surface, an antifogging coated layer with interposing of the second acrylic hard coated layer is obtained by coating the both sides of a plastic lens base with an acrylic hard coating agent, masking the outside surface with a peelable masking agent (e.g. a coating composition containing poly(vinyl chloride) or vinyl chloride-vinyl acetate copolymer), coating at least the inside surface with an antifogging agent, and removing the masking layer. As the hard coating agent or antifogging agent, use can be made of an ultraviolet-curable resin composition, and as the masking agent, a coating composition containing a poly(vinyl chloride) or vinyl chloride-vinyl acetate copolymer may be employed.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: November 16, 1999
    Assignee: Daicel Abosisangyo Co., Ltd.
    Inventors: Mitsunobu Haga, Yoshio Onisawa, Kohei Shimizu
  • Coating composition for polycarbonate moldings containing partially hydrolyzed alkyltrialkoxysilane and polyvinylbutyral
    Patent number: 4413025
    Abstract: A coating composition for polycarbonate moldings comprises(A) 100 parts by weight of a partially hydrolyzed condensate of an alkyltrialkoxysilane of the general formula:R.sup.1 Si(OR.sup.2).sub.3wherein R.sup.1 represents an alkyl group of 1-4 carbon atoms and R.sup.2 represents an alkyl group of 1-4 carbon atoms, and(B) 0.5-6 parts by weight of polyvinylbutyral resin.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: November 1, 1983
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Mitsunobu Haga, Yasuzi Omori