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. 08, 2011
Filed:
Nov. 29, 2007
Applicants:
Gyo-hyun Hwang, Daejeon, KR;
Min-ho Kil, Daejeon, KR;
Hyun-kuk Noh, Daejeon, KR;
Won-ho Lee, Daejeon, KR;
Min-suk Kim, Daejeon, KR;
Inventors:
Gyo-hyun Hwang, Daejeon, KR;
Min-ho Kil, Daejeon, KR;
Hyun-kuk Noh, Daejeon, KR;
Won-ho Lee, Daejeon, KR;
Min-suk Kim, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 27/198 (2006.01); B01J 27/00 (2006.01); B01J 27/188 (2006.01); B01J 27/19 (2006.01); B01J 27/192 (2006.01); B01J 23/00 (2006.01); B01J 23/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a heteropoly acid catalyst which is used for the production of methacrylic acid by gas phase oxidation of methacrolein and a preparing method thereof. The present invention, thereby, provides a novel heteropoly acid catalyst having excellent methacrolein conversion rate, methacrylic acid selectivity and yield.