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:
Dec. 02, 1997
Filed:
Aug. 19, 1996
Applicant:
Inventors:
Masato Tanaka, Tsukuba, JP;
Li-Biao Han, Tsukuba, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07E / ; C07E / ;
U.S. Cl.
CPC ...
549-6 ; 556404 ; 558113 ;
Abstract
An unsaturated phosphonic ester is produced by reaction of an acetylene compound with a secondary phosphite in the presence of a palladium complex catalyst.