Patents by Inventor Shigeki Ozao

Shigeki Ozao 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).

  • Method for decomposing an aromatic aldehyde-hydrogen fluoride-boron trifluoride complex
    Patent number: 3988424
    Abstract: A method for decomposing an aromatic aldehyde-hydrogen fluoride-boron trifluoride complex in the presence of a decomposing agent represented by the formula ##SPC1##Wherein n is integer of 1-6, inclusive, and m is integer of 0-5, inclusive, and a total of n and m is 6 or less, to obtain an aromatic aldehyde, hydrogen fluoride and boron trifluoride separately without causing any change in the quality of the aromatic aldehyde or without forming undesirable byproducts is disclosed.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: October 26, 1976
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Susumu Fujiyama, Takehiko Takahashi, Minoru Takagawa, Shigeki Ozao