Patents by Inventor Tohru Takeoshi

Tohru Takeoshi 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).

  • Polyetherimides
    Patent number: 4048142
    Abstract: Polyetherimides are provided and a method for making such materials involving the reaction of organic diamines and 2,2',3,3'-tetracarboxydiphenyl ether dianhydride in the presence of an organic solvent. In instances where a phenolic solvent is employed, useful polyetherimide solutions can be made which can be employed in wire coating applications.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: September 13, 1977
    Assignee: General Electric Company
    Inventor: Tohru Takeoshi