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:
May. 27, 2014
Filed:
May. 02, 2011
Applicants:
Umesh Krishna Hasyagar, Karnataka, IN;
Rathinam Jothi Mahalingam, Karnataka, IN;
Kishan Gurram, Karnataka, IN;
Paul Eijsbouts, Nieuwkuijk, NL;
Inventors:
Umesh Krishna Hasyagar, Karnataka, IN;
Rathinam Jothi Mahalingam, Karnataka, IN;
Kishan Gurram, Karnataka, IN;
Paul Eijsbouts, Nieuwkuijk, NL;
Assignee:
SABIC Innovative Plastics IP B.V., Bergen op Zoom, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 37/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods for performing a condensation reaction are disclosed. Specifically, various methods for the production of highly-pure bisphenol-A are disclosed in which an attached promoter ion exchange resin catalyst system is combined with a solvent crystallization step.