Patents by Inventor Isobe Tetsuhiro

Isobe Tetsuhiro 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 the production of carthamin
    Patent number: 5750379
    Abstract: Carthamin (safflower red dyestuff) which is highly useful but has been limited in use due to its high price, can be efficiently obtained from safflower yellow B dyestuff of which the content in safflower petals is large, and the safflower red dyestuff therefore can be stably provided at a low price.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: May 12, 1998
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Junichi Onodera, Shingo Sato, Toshio Kashiwagi, Isobe Tetsuhiro