➤ Get the DrugPatentWatch Daily Briefing

Get Daily Updates on Generic Entry, Litigation, Biosimilars, and more …

Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
Harvard Business School

Last Updated: June 3, 2020

DrugPatentWatch Database Preview

Details for Patent: 5,955,109

Email this page to a colleague

» See Plans and Pricing

« Back to Dashboard

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

Make Better Decisions: Try a trial or see plans & pricing

Serving leading biopharmaceutical companies globally:

Johnson and Johnson
Harvard Business School

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.