Patents by Inventor Katuya Nishihara

Katuya Nishihara 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).

  • Method of chlorinating side chain of 2-chloro-methylpyridine
    Patent number: 5324841
    Abstract: The invention relates to a method of chlorinating a side chain methyl group of 2-chloro-methylpyridine. The method comprising the steps of:(a) reacting said 2-chloro-methylpyridine with chlorine radical so that hydrogen chloride and/or hydrochloride of 2-chloro-methylpyridine are formed; and (b) neutralizing said hydrogen chloride and/or said hydrochloride of said 2-chloro-methyl-pyridine with a basic solution so as to chlorinating a side chain methyl group of said 2-chloro-methylpyridine.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: June 28, 1994
    Assignee: Central Glass Company
    Inventors: Yasunobu Nishimura, Yukikazu Itou, Asao Morino, Katuya Nishihara, Shinya Kawamura