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:
Jan. 28, 2003
Filed:
Sep. 26, 2001
Applicant:
Inventors:
Susumu Yamamoto, Yokohama, JP;
Atsumi Kukidome, Yokohama, JP;
Makoto Nomura, Yokohama, JP;
Keiji Maehara, Yokohama, JP;
Kenji Nagahama, Kawasaki, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 3/768 ;
U.S. Cl.
CPC ...
C07C 3/768 ;
Abstract
A process for the production of bisphenol A, including providing a melt of a crystalline adduct of bisphenol A and phenol, contacting the melt with a cation donating solid to neutralize the strong acid therewith, and then heating the melt to vaporize and remove phenol from the melt.
Quick Actions:
Yamamoto, Susumu. (2003). Process for the production of bisphenol a (U.S. Patent No. 6512148). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6512148
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile