Patents by Inventor Hisashi Okemoto

Hisashi Okemoto 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).

  • Quercetin-containing coloring
    Patent number: 5445842
    Abstract: A quercetin-containing colorant which has as an effective component a quercetin included by cyclodextrin. Effective use thereof as a colorant is possible by imparting thereto resistance against light, heat and chemicals to quercetin which is a flavonoid yellow substance. The colorant may be added to various food products for use of quercetin as a stable coloring matter.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: August 29, 1995
    Assignee: Ensuiko Sugar Refining Co., Ltd.
    Inventors: Takemi Tanaka, Hisashi Okemoto, Nobuhiro Kuwahara
  • Crocetin-containing coloring
    Patent number: 5424407
    Abstract: A stabilized crocetin-containing colorant which has as an effective component a crocetin included by cyclodextrin. This colorant is imparted with resistance against light and various chemicals to crocetin, which is a hydrolysate of crocin, the main component of the carotenoid gardenia yellow pigment. The colorant may be added to various food products for use of crocetin as a stable coloring matter.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: June 13, 1995
    Assignee: Ensuiko Sugar Refining Co., Ltd.
    Inventors: Takemi Tanaka, Hisashi Okemoto, Nobuhiro Kuwahara