Patents by Inventor Toshifumi Shirakawa

Toshifumi Shirakawa 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).

  • Perfume composition and process for producing the same
    Patent number: 7252849
    Abstract: The invention relates to a flavoring composition having a better milk-like flavor and a process for producing the composition. The composition comprises a 5-alkenoic acid and/or a 6-alkenoic acid both represented by general formula (1) and a lower aliphatic aldehyde having not greater than 8 carbon atoms: wherein n is an integer of from 1 to 4, and the dashed line represents the presence of a carbon-carbon double bond at either side. The composition may further comprise a ?-lactone represented by general formula (2) and/or a ?-lactone represented by general formula (3): wherein n is an integer of from 1 to 4; and wherein n is an integer of from 1 to 4.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: August 7, 2007
    Assignee: Soda Aromatic Co., Ltd.
    Inventor: Toshifumi Shirakawa
  • Perfume composition and process for producing the same
    Publication number: 20030157228
    Abstract: The invention relates to a flavoring composition having a better milk-like flavor and a process for producing the composition.
    Type: Application
    Filed: November 26, 2002
    Publication date: August 21, 2003
    Inventor: Toshifumi Shirakawa
  • Perfume composition containing an unsaturated aliphatic carboxylic acid
    Patent number: 4609492
    Abstract: Provided is a perfume composition containing a straight-chain trans-6-alkenoic acid represented by the general formula ##STR1## wherein n is an integer of 1 to 4.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: September 2, 1986
    Assignee: Soda Aromatic Company, Limited
    Inventors: Go Hata, Takeaki Etoh, Toshifumi Shirakawa, Yuji Matsuura, Takashi Uchiyama
  • Process for preparing anisaldehyde
    Patent number: 4339607
    Abstract: Anisaldehyde is prepared by performing at least once the steps of (a) electrolyzing cerium (III) nitrate or ammonium cerium (III) nitrate to obtain water containing cerium (IV) nitrate or ammonium cerium (IV) nitrate and/or a solution of lower alcohol containing the cerium (IV) salt, and (b) oxidizing p-methyl anisole to anisaldehyde with the cerium (IV) salt-containing solution of lower alcohol with or without the water contained therein, or with the cerium (IV) salt-containing water having a lower alcohol admixed therewith.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: July 13, 1982
    Assignee: Otsuka Kagaku Yakuhin Kabushiki Kaisha
    Inventors: Shigeru Torii, Shoji Nakane, Toshifumi Shirakawa, Mitsuo Akada