US2895880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release pharmaceutical product
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1955-05-13
•
Granted: 1959-07-21
•
Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Rosenthal Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:36
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A SOLID PHARMACEUTICAL PRODUCT PROVIDING A GRADUAL RELEASE OF MEDICAMENT OVER A LONG PERIOD OF TIME, COMPRISING A MEDICAMENT DISOERSED IN A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZEIN, GLIADIN, HORDEIN AND KAFIRIN, SAID MATERIAL BEING FROM ABOUT 20% TO ABOUT 45% BY WEIGHT OF SAID PRODUCT AND HAVING A SALT POINT IN THE RANGE FROM ABOUT 0.2 TO ABOUT 0.5.
Claim 2
Dependent Claim
62 words
A SOLID PHARMACEUTICAL PRODUCT PROVIDING A GRADUAL RELEASE OF MEDICAMENT OVER A LONG PERIOD OF TIME, COMPRISING A MEDICAMENT DISOERSED IN A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZEIN, GLIADIN, HORDEIN AND KAFIRIN, SAID MATERIAL BEING FROM ABOUT 20% TO ABOUT 45% BY WEIGHT OF SAID PRODUCT AND HAVING A SALT POINT IN THE RANGE FROM ABOUT 0.2 TO ABOUT 0.5.
References Cited (Backward Citations)
US874310A
Cited
US2508477A
Cited
US2566200A
Cited
US2738303A
Cited
US2793979A
Cited
US2736682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |