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Serving hundreds of leading biopharmaceutical companies globally:

McKinsey
Chinese Patent Office
Boehringer Ingelheim
Citi
Colorcon
UBS
US Department of Justice
Harvard Business School
US Army

Generated: April 26, 2018

DrugPatentWatch Database Preview

Details for Patent: 5,955,109

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Summary for Patent: 5,955,109
Title: Methods and compositions for topical delivery of retinoic acid
Abstract:Retinoic acid compositions intended for topical application are incorporated in novel formulations in which they are retained as impregnants inside the pores of porous solid particles or microspheres. The pores form a continuous network open to the exterior of the particles, permitting outward diffusion of the retinoic acid impregnant at a controlled rate depending on the pore size. The impregnated particles are prepared by impregnation of preformed particles with the retinoic acid.
Inventor(s): Won; Richard (Palo Alto, CA), Katz; Martin A. (Menlo Park, CA), Cheng; Chung H. (San Jose, CA), Nacht; Sergio (Los Altos, CA)
Assignee: Advanced Polymer Systems, Inc. (Redwood City, CA)
Application Number:08/079,220
Patent Claim Types:
see list of patent claims
Composition; Delivery; Use;

Drugs Protected by US Patent 5,955,109

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Serving hundreds of leading biopharmaceutical companies globally:

Harvard Business School
Fish and Richardson
Baxter
Teva
US Army
Medtronic
Chubb
Healthtrust
Cipla

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