Patents by Inventor Nobuaki Kawamura

Nobuaki Kawamura 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).

  • Reactive dye composition and a method for dyeing or printing of fiber materials using the same
    Patent number: 5536277
    Abstract: A reactive dye composition which contains a dye mixture comprising; at least one reactive dye selected from dyes represented by the following formula (I): ##STR1## in which Q is --SO.sub.2 CH.sub.2 CH.sub.2 Z in which Z is a group splittable by the action of alkali or --SO.sub.2 CH.dbd.CH.sub.2, and M.sup.1 is hydrogen, an alkali metal or an alkaline earth metal, and at least one anthraquinone compound usable as an acid dye; and a process for dyeing or printing a fiber material using the reactive dye composition.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: July 16, 1996
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Mitsuo Shimode, Nobuaki Kawamura, Shinichi Yabushita, Shuhei Hashizume
  • Granular reactive dye composition and production process thereof
    Patent number: 5437688
    Abstract: A granular reactive dye composition comprising a water-soluble reactive dye and at least one granulating auxiliary agent selected from the group consisting of compounds of the following formula (3), ##STR1## wherein R is --C.sub.s H.sub.2s+1, in which s is an integer of 5 to 20 and wherein the content of the granulating auxiliary agent is 5 parts by weight or less per 100 parts by weight of the reactive dye.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: August 1, 1995
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Noriaki Yamauchi, Nobuaki Kawamura, Tatuo Miura, Shuhei Hashizume, Isao Nakamae, Kazumi Yoshigoe, Hiroyuki Suzuki, Iwao Minami
  • Reactive dye composition and method for dyeing or printing fiber materials using the same
    Patent number: 5356441
    Abstract: A reactive dye composition containing a reactive dye and a salt of polyoxyethylene substituted-phenyl ether ester produces excellent solubility in water and in an aqueous alkali solution and can be used to dye a fiber material uniformly.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: October 18, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takemi Tokieda, Naoki Harada, Shuhei Hashizume, Koiti Ishii, Nobuaki Kawamura, Tetsuya Miyamoto, Hiroyuki Suzuki, Shigeru Kawabata