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Christopher E. M. Griffiths
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Ann Arbor, MI, US
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last 30 patents
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Patent Grant
Method of treatment of hyperpigmentation in black skin with retinoi...
Patent number
5,750,570
Issue date
May 12, 1998
The Regents of the University of Michigan
John J. Voorhees
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Retinoic acid as a skin tanning agent in persons of light skin color
Patent number
5,266,307
Issue date
Nov 30, 1993
The Regents of the University of Michigan
John J. Voorhees
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE