The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1982
Filed:
Sep. 06, 1979
Applicant:
Inventors:
Mitsuru Kondo, Kawanishi, JP;
Hiroshi Iwasaki, Kawanishi, JP;
Kiyoshi Yasui, Mukomotomachi, JP;
Makoto Miyake, Nishinomiya, JP;
Assignee:
Kanzaki Paper Manufacturing Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562460 ; 562418 ; 562419 ; 562420 ; 562468 ; 26032647 ; 544172 ; 544242 ; 544335 ; 546 98 ;
Abstract
A process is described for preparing benzophenone derivatives of a high purity in an extremely high yield from 3-phenylphthalide derivatives with the use of at least one oxidizing agent.