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. 22, 2008
Filed:
Dec. 17, 2004
Gurram Kishan, Bangalore, IN;
Ramesh Krishnamurti, Bangalore, IN;
Kapila Debjani, Bangalore, IN;
Arakali Radhakrishna Srinivasarao, Bangalore, IN;
Jan-pleun Lens, Breda, NL;
Gurram Kishan, Bangalore, IN;
Ramesh Krishnamurti, Bangalore, IN;
Kapila Debjani, Bangalore, IN;
Arakali Radhakrishna Srinivasarao, Bangalore, IN;
Jan-Pleun Lens, Breda, NL;
General Electric Company, Schenectady, NY (US);
Abstract
A process for preparing aromatic bisphenols, wherein the method comprises reacting an aromatic hydroxy compound with an alkylating agent having a functionality of two in the presence of a catalyst system. The catalyst system used for the process is selected from the group consisting of a heteropolyacid compound, a clay, a functionalized metal oxide catalyst and combinations of the foregoing.