Patents by Inventor Kalivan Neelakandan

Kalivan Neelakandan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Non-aqueous solution process for the preparation of cross-linked polymers
    Patent number: 8710154
    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.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: April 29, 2014
    Assignee: Shasun Pharmaceuticals Limited
    Inventors: Kanchivakkam Ramaswamy Govindarajan, Kalpattu Kuppasamy Balasubramanian, S. Bava Bohorudeen, Somasundaram Angalan, Kalivan Neelakandan