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. 30, 2002
Filed:
Jan. 28, 2000
Applicant:
Inventors:
Seiji Miyazaki, Otake, JP;
Akira Ogawa, Otake, JP;
Yasutaka Nakashima, Otake, JP;
Yoshiaki Kobayashi, Otake, JP;
Mikiyoshi Araki, Otake, JP;
Assignee:
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 5/142 ;
U.S. Cl.
CPC ...
C07C 5/142 ;
Abstract
A process for purification of (meth)acrylic acid which comprises adding to a crude (meth)acrylic acid one or two or more polar organic substances as a second component at a concentration of 1-35% by weight, crystallizing (meth)acrylic acid from the resulting (meth)acrylic acid solution, and separating the precipitated crystal of (meth)acrylic acid and a mother liquor from each other.
Quick Actions:
Miyazaki, Seiji. (2002). Process for purification of (meth)acrylic acid (U.S. Patent No. 6380427). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6380427
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile