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:
Jul. 25, 2000
Filed:
Jul. 02, 1993
Applicant:
Inventors:
Hiroshi Tokailin, Sodegaura-machi, JP;
Hisahiro Higashi, Sodegaura-machi, JP;
Chishio Hosokawa, Sodegaura-machi, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585 25 ; 546290 ; 546329 ; 546334 ; 546339 ; 568632 ; 568633 ; 585 19 ; 585 26 ;
Abstract
An aromatic dimethylidyne compound of the formula: ##STR1## wherein X and Y are the same or different and are each an alkyl having 1 to 4 carbons, a phenyl, a cyclohexyl, a naphthyl, or a pyridyl and Ar' is ##STR2## A process for preparing an aromatic dimethylidyne compound which comprises condensing a phosphorus compound and a ketone compound.