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. 29, 2014
Filed:
Sep. 14, 2009
Kanchivakkam Ramaswamy Govindarajan, Chennai, IN;
Kalpattu Kuppasamy Balasubramanian, Chennai, IN;
S. Bava Bohorudeen, Chennai, IN;
Somasundaram Angalan, Chennai, IN;
Kalivan Neelakandan, Chennai, IN;
Kanchivakkam Ramaswamy Govindarajan, Chennai, IN;
Kalpattu Kuppasamy Balasubramanian, Chennai, IN;
S. Bava Bohorudeen, Chennai, IN;
Somasundaram Angalan, Chennai, IN;
Kalivan Neelakandan, Chennai, IN;
Shasun Pharmaceuticals Limited, Chennai, IN (US);
Abstract
The present invention discloses a non-aqueous solution process for making cross-linked polymers. The cross-linked polymers are characterized by a repeat unit that includes at least one amino group. Amino groups can be part of the polymer backbone (e.g., polyethyleneimine), pendant from the polymer backbone (e.g., polyallylamine), or both types of amino groups can exist within the same repeat unit and/or polymer. The present invention discloses more specifically non-aqueous solution cross-linking to prepare Sevelamer and its salts, Colesevelam and its salts.