US Patent 7566795 Preparation of retinyl esters

Patent 7566795 was granted and assigned to Eastman Chemical Company on July, 2009 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Eastman Chemical Company

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75667950

Patent Inventor Names

Stephanie Kay Clendennen0

Neil Warren Boaz0

Date of Patent

July 28, 2009

Patent Application Number

115441520

Date Filed

October 6, 2006

Patent Primary Examiner

‌

Deborah D. Carr

Patent abstract

Long-chain esters of retinol are prepared via a chemoenzymatic process from short-chain retinyl esters and an appropriate long-chain acid or ester in the presence of an enzyme. Use of various additives enhance the yield of the desired ester and facilitated its purification.

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