Patents by Inventor Tetsuya Takamatsu

Tetsuya Takamatsu 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 hydrocracking a waste rubber
    Patent number: 4251500
    Abstract: This invention relates to a process for hydrocracking a waste rubber such as used tires, used conveyor belts, used hoses etc., and more particularly to a process for hydrocracking such waste rubber with a specific catalyst obtained by mixing (1) a main catalyst of an iron compound with (2) an auxiliary catalyst of metal compounds of the Periodic Table, Group VI, based on a synergistic catalyst action with sulfur contained in said waste rubber so that said waste rubber is decomposed into an oil contents and carbon.
    Type: Grant
    Filed: October 18, 1978
    Date of Patent: February 17, 1981
    Assignee: Bridgestone Tire Company Limited
    Inventors: Minoru Morita, Tetsuya Takamatsu