Patents by Inventor Akira Matukuma

Akira Matukuma 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).

  • Repellent compositions against insects, ticks and mites employing mixtures of O-alkyl-N-phenylthiocarbamates and Deet
    Patent number: 4612327
    Abstract: A repellent composition against insects, ticks and mites, comprising the two components, an O-alkyl-N-phenylthiocarbamate and N,N-diethyl-m-toluamide.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: September 16, 1986
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Akira Matukuma, Yohji Takahashi, Yoshihiko Kondo
  • Process for producing pyrogallol and derivatives thereof
    Patent number: 3932538
    Abstract: A process for producing pyrogallol or 5-substituted pyrogallol having the formula: ##SPC1##Wherein R is selected from the group consisting of alkyl, cycloalkyl, aryl, and aralkyl, or a mixture thereof which comprises heating an aqueous solution of 4-substituted-2,6-diaminophenol or 4-substituted-2,6-diamino 1-alkoxybenzene having the formula: ##SPC2##Wherein R is as defined above and A is selected from the group consisting of hydrogen and alkyl, under acid conditions.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: January 13, 1976
    Assignee: Mitsubishi Chemical Industries, Limited
    Inventors: Heitaro Obara, Junichi Onodera, Akira Matukuma, Kenji Yoshida