Patents by Inventor Tadaaki Fujita

Tadaaki Fujita 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).

  • Patent number: 5104981
    Abstract: A process is disclosed for the production of an alkyl glycoside excellent in hue, which comprises (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing an unreacted higher alcohol, (2) reacting the resulting product with a metal/hydrogen complex represented by formula (I)M(BH.sub.4).sub.x (I)whereinM is an alkali metal, Ca, Zn, or (CH.sub.3).sub.4 N; and x is 1 when M is an alkali metal or (CH.sub.3).sub.4 N and x is 2 when M is Ca or Zn;(3) separating the resulting reaction mixture into the alkyl glycoside and the unreacted higher alcohol, and (4) decomposing the remaining metal/hydrogen complex with an acid.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: April 14, 1992
    Assignee: Kao Corporation
    Inventors: Akira Yamamuro, Makoto Amau, Tadaaki Fujita, Kiyoshi Aimono, Akio Kimura
  • Patent number: 5079350
    Abstract: A process for the production of an alkyl glycoside or an aqueous solution thereof is disclosed, comprising the steps of (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing unreacted alcohol, (2) establishing a moving liquid film of the alkyl glycoside reaction product and (3) contacting the moving liquid film with steam or an inert gas at a temperature of from 50.degree. to 200.degree. C. The alkyl glycoside or aqueous solution thus obtained contains little unreacted alcohol and is excellent in hue and odor.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: January 7, 1992
    Assignee: Kao Corporation
    Inventors: Tadaaki Fujita, Kiyoshi Aimono, Kunizo Hashiba, Koichi Ohori