Patents

U.S. patent granted for DIOP ligand family

Published in Medical Devices and Surgical Technology Week, August 31st, 2003

Chiral Quest, Inc., (CQST) announced that the U.S. Patent and Trademark Office has issued a patent (No. 6,576,772) covering composition of matter for chiral bisphosphine ligands derived from D-mannitol to The Penn State Research Foundation.

Professor Xumu Zhang, Chiral Quest's chief technology officer is the inventor on the patent. Chiral Quest, Inc., is the exclusive licensee of the patent.

DIOP ligand differs from well-known DIOP ligand in its conformational stability. Methyl groups and other substituents in DIOP are oriented in equatorial positions. This conformational difference has produced a dramatic increase of enantioselectivity for the...

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Source: Medical Devices and Surgical Technology Week (2003-08-31)

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