Patents by Inventor Katsuhiko Tajima

Katsuhiko Tajima 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).

  • Gas turbine installation
    Patent number: 6250068
    Abstract: According to the present invention, the shape of a passage in an intake-air duct communicated with the suction side of the intake-air filter is regulated so that snow is heaped up in the intake-air duct, and accordingly, the volume of snow reaching the intake-air filter is reduce in order to prevent the intake-air filter from clogging, and to prevent the flow rate of intake-air into a gas turbine from being lowered. In order to attain the above-mentioned purpose, there is provided, according to the present invention, an air-intake method for a gas turbine, in which intake-air 18 taken from a fresh air intake port is fed downward through a second intake-air duct in a substantially vertical direction, and then is fed in a substantially horizontal direction. Thereafter, dust is removed from the intake-air within an intake-air filter chamber, and then, is led into the gas turbine.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: June 26, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Katsuhiko Tajima, Katsutoshi Higuma, Akitaka Tateishi
  • 1-(2,6-dimethylphenyloxy)-2-alkanols and perfume compositions containing the same
    Patent number: 5221780
    Abstract: A 1-(2,6-dimethylphenyloxy)-2-alkanol of formula (1): ##STR1## wherein R is an alkyl group having 1 to 4 carbon atoms, and perfume compositions containing the alkanol having an intense woody note, and are useful as fragrance-imparting ingredients for various compositions, particularly in the cosmetic field.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: June 22, 1993
    Assignee: Kao Corporation
    Inventors: Junji Koshino, Nao Toi, Katsuhiko Tajima, Yoshiaki Fujikura
  • Modified basil essential oil and process for the production thereof
    Patent number: 5173479
    Abstract: The modified basil essential oil of the present invention comprises 87% by weight or more of sesquiterpene compounds.The process for the production of a modified basil essential oil of the present invention comprises rectifying basil essential oil to thereby distill a fraction of a boiling point of from 82.degree. to 92.degree. C. under reduced pressure (2.0 to 3.0 mmHg), treating the distillate with an alkali and removing the aqueous phase to thereby give a modified basil essential oil containing 87% by weight or more of sesquiterpene compounds.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: December 22, 1992
    Assignee: KAO Corporation
    Inventors: Katsuhiko Tajima, Yoshihiro Hasegawa
  • Perfume composition
    Patent number: 5116813
    Abstract: The present invention relates to a perfume composition comprising a methyl branched aliphatic compound and the methyl branched aliphatic compound useful as perfume material and a method for imparting a fragrance by using such compounds and compositions.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: May 26, 1992
    Assignee: Kao Corporation
    Inventors: Katsuhiko Tajima, Sachio Tanaka