Patent US3755558A successfully refreshed from Google Patents.
US3755558A
Expired / Lapsed
US
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Polylactide drug mixtures for topical application atelet aggregation
Assignee: Pfizer Inc
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Filing: 1971-02-23
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Granted: 1973-08-28
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Expires: 1991-02-23
Abstract
Abstract FORMULATIONS OF POLYACTIDE AND DRUG FOR TOPICAL APPLICATION TO THE BODY AS FILMS PROVIDE A SLOW SUSTAINED RELEASE OF THE DRUG TO THE SITE. THE POLYLACTIDE IS BIODEGRADABLE TO NORMAL OR ESSENTIALLY NORMAL METABOLIC PRODUCTS.
Inventors
- 👤 R Scribner
- 👤 Benzothieno
- 👤 H Hess
- 👤 Angelis G De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:34
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2031; A61K9/204; A61K9/70; A61K9/7015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |