Patents Assigned to Soda Aromatic Company, Limited
  • Process for preparing 3,5,5-trimethylcyclohexa-2-en-1,4-dione
    Patent number: 4898985
    Abstract: 3,5,5-Trimethylcyclohexa-2-en-1,4-diones is prepared by oxidizing 3,5,5-trimethylcyclohexa-3-en-one with molecular oxygen or a molecular oxygen-containing gas in the presence of an organic base and an organometallic complex catalyst comprising manganese, iron, cobalt or copper atom and at least four nitrogen atoms coordination-bonded thereto.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: February 6, 1990
    Assignee: Soda Aromatic Company, Limited
    Inventors: Nobuhiko Ito, Kimio Kinoshita, Kiyonori Suzuki, Takeaki Eto
  • 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
  • Slow-release perfume compositions and a process for the preparation of them
    Patent number: 4511496
    Abstract: A pellet of ethylene-vinyl acetate copolymer and a perfume are mixed in a mixer, and when the perfume has been impregnated into only the surface layer portion of the pellet, then a fine powder is added and mixed with the perfume-impregnated pellet for the purpose of coating the surface thereof.
    Type: Grant
    Filed: June 14, 1983
    Date of Patent: April 16, 1985
    Assignee: Soda Aromatic Company, Limited
    Inventor: Yuuichi Matsumoto