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:
Jan. 10, 2006
Filed:
Feb. 18, 2003
Applicants:
Eit Drent, Amsterdam, NL;
Renata Helena Van Der Made, Amsterdam, NL;
Robert Ian Pugh, Amsterdam, NL;
Inventors:
Eit Drent, Amsterdam, NL;
Renata Helena Van Der Made, Amsterdam, NL;
Robert Ian Pugh, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for the preparation of an carboxylic anhydride by reaction of an ethylenically unsaturated compound with carbon monoxide and an carboxylic acid in the presence of a catalyst involving: