DrugPatentWatch Database Preview
Details for Patent: 4,680,312
Summary for Patent: 4,680,312
Title: | Stable prostaglandin E gels utilizing colloidal silicon dioxide as a gel-forming agent |
Abstract: | The present invention provides an improved class of stable gels of prostaglandin E compounds prepared from solutions of prostaglandin E compounds in a pharmaceutically acceptable, stabilizing organic solvent, e.g., triacetin, gelled by the addition of colloidal silicon dioxide. |
Inventor(s): | Johnson; Brian S. (Crawley, GB) |
Assignee: | The Upjohn Company (Kalamazoo, MI) |
Application Number: | 06/674,357 |
Patent Claim Types: see list of patent claims | Dosage form; |
Drugs Protected by US Patent 4,680,312
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 |
Foreign Priority and PCT Information for Patent: 4,680,312
Foriegn Application Priority Data | ||
Foreign Country | Foreign Patent Number | Foreign Patent Date |
United Kingdom | 8208322 | Mar 22, 1982 |
International Patents Family Members for US Patent 4,680,312
Country | Document Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
---|---|---|---|---|---|
Germany | 3381898 | ➤ Sign Up | |||
Finland | 81962 | ➤ Sign Up | |||
Denmark | 127883 | ➤ Sign Up | |||
Denmark | 167139 | ➤ Sign Up | |||
Country | Document Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |