Patents by Inventor Kunihiko Yajima

Kunihiko Yajima 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 preparing methyltin chlorides
    Patent number: 4128565
    Abstract: Improved process for preparing methyltin chlorides through direct reaction of methyl chloride with metallic tin wherein the reaction is effected in a high-boiling hydrocarbon solvent in the presence of a glycol and iodine or an iodine compound as a reaction accelerator.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: December 5, 1978
    Assignee: Sankyo Organic Chemicals Company Limited
    Inventors: Kunihiko Yajima, Shuji Sayama