Details for Patent: 5,955,109
✉ Email this page to a colleague
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 |
International Family Members for US Patent 5,955,109
Country | Patent Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
---|---|---|---|---|---|
Austria | 106235 | ⤷ Try a Trial | |||
Australia | 2164088 | ⤷ Try a Trial | |||
Australia | 603379 | ⤷ Try a Trial | |||
Australia | 613398 | ⤷ Try a Trial | |||
Australia | 7858087 | ⤷ Try a Trial | |||
>Country | >Patent Number | >Estimated Expiration | >Supplementary Protection Certificate | >SPC Country | >SPC Expiration |