Patents by Inventor Morihiko Endo

Morihiko Endo 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 colored polyolefin molded articles and colorants used therein
    Patent number: 4233206
    Abstract: A process for the production of a colored polyolefin molded articles comprising adding to a polyolefin either a compound of the formula D--CH.sub.2 O.OC--R]).sub.n as a colorant wherein D is the residue of a common organic pigment, R is an alkyl, alkenyl or aryl group having up to 20 carbon atoms and n is an integer of 1-4, or a mixture of the compound of the above formula with at least one usual pigment, to form a mixture, and then molding the mixture thereby producing the desired colored articles. This invention also relates to the compound of said formula and to a mixture thereof with at least one common pigment.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: November 11, 1980
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Hiromitsu Katsura, Morihiko Endo, Takashi Kanno