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, 1999
Filed:
Oct. 06, 1997
Applicant:
Inventors:
Katsumasa Harada, Yamaguchi, JP;
Ryoji Sugise, Yamaguchi, JP;
Koichi Kashiwagi, Yamaguchi, JP;
Yoichi Imbe, Yamaguchi, JP;
Takashi Doi, Yamaguchi, JP;
Keigo Nishihira, Yamaguchi, JP;
Shuji Tanaka, Yamaguchi, JP;
Hirofumi Ii, Yamaguchi, JP;
Assignee:
Ube Industries, Ltd., Yamaguchi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558274 ;
Abstract
A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of: