Patents by Inventor Kazusige Okamoto

Kazusige Okamoto 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).

  • Piperidine compound
    Patent number: 6046261
    Abstract: A piperidine compound having excellent blooming resistance represented by the formula (I) ##STR1## (wherein, R.sub.1, R.sub.2 and R.sub.3 each independently represent a hydrogen atom, lower alkyl group, cycloalkyl group having 5 to 7 carbon atoms or an acyl group having 2 to 18 carbon atoms. R.sub.4 represents an acyl group having 2 to 18 carbon atoms.) is provided, and a method for producing the piperidine compound and use thereof as a stabilizer for an organic material are also provided.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: April 4, 2000
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazusige Okamoto, Motohiko Sammizzo, Mitsuo Shimode