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:
Oct. 23, 2012
Filed:
Jun. 07, 2007
Applicants:
Xiaogen Feng, Cao County, CN;
Nongyue Wang, Cao County, CN;
Xiaohui Mao, Cao County, CN;
Ruibiao Yu, Cao County, CN;
Qianwen Cheng, Cao County, CN;
Inventors:
Xiaogen Feng, Cao County, CN;
Nongyue Wang, Cao County, CN;
Xiaohui Mao, Cao County, CN;
Ruibiao Yu, Cao County, CN;
Qianwen Cheng, Cao County, CN;
Assignee:
Jiangsu Sinorgchem Technology Co., Ltd., Taizhou, Jiangsu Province, CN;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 31/00 (2006.01); C07C 209/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A complex base catalyst comprising tetraalkyl ammonium hydroxide and tetraalkyl ammonium salt for the condensation reaction of aniline and nitrobenzene.