Patents by Inventor Norio Hirokawa

Norio Hirokawa 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).

  • Regenerated collagen fiber and method of manufacturing the same
    Patent number: 6160096
    Abstract: The present invention provides a regenerated collagen fiber exhibiting a draping, luster and feel close to those of a natural protein fiber such as a human hair and capable of application of a permanent wave treatment, and a method of manufacturing the regenerated collagen fiber. The amino group and/or carboxyl group of the regenerated collagen is chemically modified to introduce a mercapto group and/or a disulfide linkage to the regenerated collagen. When subjected to a permanent wave treatment, the regenerated collagen fiber retains the waved shape.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: December 12, 2000
    Assignee: Kaneka Corporation
    Inventors: Shinichi Sakashita, Mamoru Tsugawa, Masaoki Goto, Kunihiko Matsumura, Norio Hirokawa
  • Spherical vinyl chloride granules for paste molding
    Patent number: 5378786
    Abstract: Spherical vinyl chloride resin granules and a process for producing the same are disclosed. The granules exhibit excellent particle characteristics and sol-forming properties and are therefore useful as resins for paste.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: January 3, 1995
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kyoji Uku, Masahiro Ueda, Tetsuya Murakami, Norio Hirokawa
  • Process for tempering edible plastic fat products
    Patent number: 4948618
    Abstract: A process for tempering edible plastic fat products such as margarine and shortenings which comprises crystallizing with cooling a starting material of fats and oils with or without other ingredients and subjecting the resulting product to pressuring treatment.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: August 14, 1990
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Norio Hirokawa, Satoshi Imai, Hisashi Morikawa
  • Refining agent of molten metal and methods for producing the same
    Patent number: 4435210
    Abstract: The present invention relates to a refining agent used for deoxidation, desulfurization, and dephosphorization of molten steel by a ladle refining, as well as methods for producing such a refining agent. The general practice in ladle refining is to use for the refining agent both so-called flux, which is mainly composed of CaO, and a Ca-based metallic additive.In conventional practice, the flux and the Ca-based metallic additive are added to the molten steel separately.It is an object of the present invention to provide a refining agent, wherein the flux and metallic CaO component act highly effectively on the molten metal.A refining agent for metal according to the present invention essentially consists of: a Ca alloy, which essentially consists of Ca and at least one element selected from the group consisting of Al and Si, and a flux mainly composed of CaO and Al.sub.2 O.sub.3, the Ca-alloy phases and the flux phases being integrally bonded to one another.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: March 6, 1984
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Norio Hirokawa, Tsuneo Kawachi, Hiroshi Saito, Ryoichi Yoshimura
  • Lime bearing agent for use in refining of ferrous melt
    Patent number: 4225348
    Abstract: A slaking property of a lime bearing agent for use in the refining, particularly in the injection refining, of a ferrous melt is essentially eliminated by providing the agent with a special form, i.e. an uncrushed, granular form solidified from molten drops. Hydrogen pick up of the ferrous melt from the refining agent is avoided and an excellent refining effect of the ferrous melt is achieved by the refining agent of the present invention.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: September 30, 1980
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryoichi Yoshimura, Munetaka Honda, Norio Hirokawa