Patents by Inventor Soichi Teshima

Soichi Teshima 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).

  • Process for producing unsaturated carboxylic acid esters
    Patent number: 4202990
    Abstract: An ester of an unsaturated carboxylic acid is prepared by an ester exchange process which comprises reacting a lower alkyl ester of an unsaturated, 3-4 carbon atom carboxylic acid with a higher alcohol than the alcohol fragment of said lower alkyl ester over a catalyst selected from the group consisting of (1) chelate compounds of zirconium with .beta.-diketone or mixtures thereof, (2) chelate compounds of calcium with .beta.-diketone or mixtures thereof, and mixtures thereof by an ester exchange reaction.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: May 13, 1980
    Assignee: Mitsubishi Rayon Company, Limited
    Inventors: Fumiki Murakami, Soichi Teshima, Toshihiko Yokoyama
  • Process for producing unsaturated carboxylic acid esters
    Patent number: 4074062
    Abstract: An ester of an unsaturated carboxylic acid is prepared by an ester exchange process which comprises reacting a lower alkyl ester of an unsaturated, 3-4 carbon atom carboxylic acid with an alcohol different than the alcohol fragment of said lower alkyl ester over a catalyst selected from the group consisting of (1) metallic barium, barium compounds and mixtures thereof, (2) metallic thallium, thallium compounds or mixtures thereof, (3) metallic molybdenum, molybdenum compounds or mixtures thereof, and mixtures thereof by an ester exchange reaction.
    Type: Grant
    Filed: July 7, 1976
    Date of Patent: February 14, 1978
    Assignee: Mitsubishi Rayon Company, Limited
    Inventors: Fumiki Murakami, Soichi Teshima, Toshihiko Yokoyama