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:
Nov. 05, 2019
Filed:
Aug. 01, 2017
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Ji Yeon Kim, Daejeon, KR;
Jun Seon Choi, Daejeon, KR;
Joo Young Cheon, Daejeon, KR;
Wang Rae Joe, Daejeon, KR;
Kyung Soo Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 27/16 (2006.01); B01J 37/03 (2006.01); C07D 207/448 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); B01J 37/06 (2006.01);
U.S. Cl.
CPC ...
B01J 27/16 (2013.01); B01J 37/031 (2013.01); B01J 37/04 (2013.01); B01J 37/06 (2013.01); B01J 37/08 (2013.01); C07D 207/448 (2013.01);
Abstract
A dehydration catalyst for preparing N-substituted maleimide, which may minimize formation of by-products, is reusable because its activity is not reduced significantly even after being reused several times, and may maintain its reaction activity for a long time, a preparation method thereof, and a method of preparing N-substituted maleimide, are provided.