Patents by Inventor Kazuyoshi Kawazu

Kazuyoshi Kawazu 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).

  • Red dye and its solution
    Patent number: 5374749
    Abstract: Disclosed are a dye having a structural formula (I): ##STR1## where n is form 1 to 15, and a solution containing the dye. The dye is highly stable and has a characteristic color hue, and it is insoluble in water. The dye is expected to be useful in various fields of coating materials, dyes, cosmetics and food additives.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: December 20, 1994
    Assignee: Kabushikikaisha Kibun Shokuhin
    Inventors: Kazuhito Kusaka, Sachio Wakayama, Yoshihiro Sekino, Kazuyoshi Kawazu, Akio Kobayashi
  • Dye and its solution
    Patent number: 5283347
    Abstract: Disclosed is a dye having a structural formula (I): ##STR1## where n is from 1 to 15, and a solution containing the dye. The dye is highly stable and has a characteristic color hue, and it is insoluble in water. The dye is expected to be useful in various fields of coating materials, dyes cosmetics and food additives.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: February 1, 1994
    Assignee: Kabushikikaisha Kibun
    Inventors: Kazuhito Kusaka, Sachio Wakayama, Yoshihiro Sekino, Kazuyoshi Kawazu, Akio Kobayashi