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:
Jun. 08, 2010
Filed:
Jan. 21, 2008
Applicants:
Evert Van Der Heide, Amsterdam, NL;
Timothy Michael Nisbet, Amsterdam, NL;
Garo Garbis Vaporciyan, Houston, TX (US);
Cornelis Leonardus Maria Vrouwenvelder, Amsterdam, NL;
Inventors:
Evert Van Der Heide, Amsterdam, NL;
Timothy Michael Nisbet, Amsterdam, NL;
Garo Garbis Vaporciyan, Houston, TX (US);
Cornelis Leonardus Maria Vrouwenvelder, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 69/96 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for the preparation of a diaryl carbonate by transesterification of an aromatic alcohol with a dialkyl carbonate in the presence of a transesterification catalyst during a period of time [t],