Patents by Inventor Toshihiro Sakakibara

Toshihiro Sakakibara 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).

  • Dip moldings, composition for dip molding and method for producing dip moldings
    Patent number: 7183347
    Abstract: The present invention relates to a dip molding, a composition for dip molding, and a method for producing a dip molding. The dip molding is molded from a conjugated diene based rubber latex, crosslinked by a water-soluble multivalent metal salt, and contains substantially none of any of a sulfur-containing vulcanizing agent, a vulcanization accelerator for the vulcanizing agent, and zinc oxide. The dip molding has very few pinholes, has good feel, and has sufficient strength.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: February 27, 2007
    Assignee: Zeon Corporation
    Inventors: Hisanori Ota, Toshihiro Sakakibara
  • Composition for dip forming, dip-formed object, and process for producing the same
    Patent number: 6878766
    Abstract: A dip-formed article which is shaped from a dip-formable composition comprising 100 weight parts of a conjugated diene copolymer prepared by copolymerization of 50 to 85 weight % of a conjugated diene monomer with 15 to 40 weight % of an ethylenically unsaturated nitrile monomer, 1 to 4 weight % of an ethylenically unsaturated acid monomer and 0 to 30 weight % of a copolymerizable other ethylenically unsaturated monomer, 2 to 6 weight parts of sulfur and 0 to 0.2 weight parts of zinc oxide. The dip-formed article is characterized as a glove by being well elongated and ease in donning, being not easily broken upon donning, and not wearying a wearer's hand even when it is worn for a long time, and having improved lastingness of the tight conformity to the skin of a wearer's hand.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: April 12, 2005
    Assignee: Zeon Corporation
    Inventors: Katsuo Hagiwara, Hisanori Ota, Jun Sotoyama, Toshihiro Sakakibara
  • Cosmetic composition
    Patent number: 6692754
    Abstract: The present invention relates to skin aging inhibitors and/or skin quality-improving agents comprising hydroxyproline, its N-acyl derivatives or salts thereof, and cosmetic compositions for inhibiting skin aging and/or improving skin quality comprising said skin aging inhibitors and/or skin quality-improving agents.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: February 17, 2004
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yutaka Makimoto, Asako Kobayashi, Toshihiro Sakakibara, Chiemi Takaboshi, Ayako Kamimura, Tomoya Takahashi, Minako Tajima, Yoichiro Takekoshi
  • Dip moldings, composition for dip molding and method for producing dip moldings
    Publication number: 20040010067
    Abstract: The present invention relates to a dip molding, a composition for dip molding, and a method for producing a dip molding. The dip molding is molded from a conjugated diene based rubber latex, crosslinked by a water-soluble multivalent metal salt, and contains substantially none of any of a sulfur-containing vulcanizing agent, a vulcanization accelerator for the vulcanizing agent, and zinc oxide. The dip molding has very few pinholes, has good feel, and has sufficient strength.
    Type: Application
    Filed: April 30, 2003
    Publication date: January 15, 2004
    Inventors: Hisanori Ota, Toshihiro Sakakibara
  • Composition for dip forming, dip-formed object, and process for producing the same
    Publication number: 20030050377
    Abstract: A dip-formed article which is shaped from a dip-formable composition comprising 100 weight parts of a conjugated diene copolymer prepared by copolymerization of 50 to 85 weight % of a conjugated diene monomer with 15 to 40 weight % of an ethylenically unsaturated nitrile monomer, 1 to 4 weight % of an ethylenically unsaturated acid monomer and 0 to 30 weight % of a copolymerizable other ethylenically unsaturated monomer, 2 to 6 weight parts of sulfur and 0 to 0.2 weight parts of zinc oxide. The dip-formed article is characterized as a glove by being well elongated and ease in donning, being not easily broken upon donning, and not wearying a wearer's hand even when it is worn for a long time, and having improved lastingness of the tight conformity to the skin of a wearer's hand.
    Type: Application
    Filed: July 24, 2002
    Publication date: March 13, 2003
    Inventors: Katsuo Hagiwara, Hisanori Ota, Jun Sotoyama, Toshihiro Sakakibara