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. 19, 2002
Filed:
Jan. 03, 2001
Applicant:
Inventors:
Assignee:
Nippon Shokubai Co., Ltd., , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 5/142 ; C07C 5/116 ;
U.S. Cl.
CPC ...
C07C 5/142 ; C07C 5/116 ;
Abstract
A method of producing highly purified acrylic acid in a high yield is provided. A method of producing acrylic acid including the steps of an oxidation step, an absorption step, a distillation step, a crystallization step, and a dimer decomposition step.