Patents by Inventor Atsushi Nakashimada

Atsushi Nakashimada 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).

  • Dye composition for keratinous fibers
    Patent number: 6533823
    Abstract: Provided is a dye composition for keratinous fibers, which comprises (A) a hydrolyzate of a lower alkyl vinyl ether/maleic anhydride copolymer partially crosslinked with a terminal unsaturated diene compound, or a monoalkyl ester of the hydrolyzate; and (B) a dye. The dye composition for keratinous fibers according to the present invention has a stable and appropriate viscosity even in a wide pH range and even in a system containing a salt or solvent at a high concentration; and has excellent usability and dyeing properties. It is particularly suited for use with an acid dye.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: March 18, 2003
    Assignee: KAO Corporation
    Inventors: Atsushi Nakashimada, Masaki Fukuhara
  • Dye composition for keratinous fibers
    Publication number: 20010029637
    Abstract: Provided is a dye composition for keratinous fibers, which comprises (A) a hydrolyzate of a lower alkyl vinyl ether/maleic anhydride copolymer partially crosslinked with a terminal unsaturated diene compound, or a monoalkyl ester of the hydrolyzate; and (B) a dye.
    Type: Application
    Filed: March 5, 2001
    Publication date: October 18, 2001
    Applicant: KAO CORPORATION
    Inventors: Atsushi Nakashimada, Masaki Fukuhara
  • Hair dye composition having a particular buffer capacity and containing an alkylene carbonate
    Patent number: 6248314
    Abstract: The invention relates to a hair dye composition comprising (A) an acid dye and (B) an alkylene carbonate having 3-5 carbon atoms in total, said composition exhibiting a pH of 2-6, and having a buffer capacity of 0.007-0.5 gram equivalent/L, and to a method of dyeing hair using the hair dye composition. The hair dye composition is excellent in hair-dyeing ability without coloring the scalp and skin and has good fastness to shampoo and the like.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: June 19, 2001
    Assignee: Kao Corporation
    Inventors: Atsushi Nakashimada, Nozomi Nagashima, Masahiko Sakai, Hajime Miyabe, Yutaka Shibata
  • Hair dye composition comprising acid dyes
    Patent number: 6096099
    Abstract: Disclosed herein is a hair dye composition comprising (A) benzyloxyethanol and/or benzyl alcohol, (B) propylene carbonate and (C) an acid dye and having a pH of 2.0 to 6.0. The composition has excellent hair-dyeing ability and good fastness to shampoo.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: August 1, 2000
    Assignee: Kao Corporation
    Inventors: Naohiro Kariya, Atsushi Nakashimada, Nozomi Hagashima, Yutaka Shibata, Masahiko Sakai, Hajime Miyabe