US2954322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceuticals
Assignee: Olin Corp
•
Filing: 1958-09-04
•
Granted: 1960-09-27
•
Expires: 1978-09-04
Abstract
No abstract record available.
Inventors
- 👤 Heilig Harland Edward
- 👤 Jehle Felix Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:21
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2886; A61K9/2806; A61K9/282; A61K9/2833; A61K9/284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A TABLET INTENDED FOR ORAL ADMINISTRATION COMPRISING A CORE CONTAINING A WATER-SENSITIVE MEDICAMENT AND A COATING THEREOF WHICH ESSENTIALLY COMPRISES SHELLAC AND POLYVINYLPYRROLIDONE IN THE PROPORTION OF ABOUT ONE PART BY WEIGHT OF SHELLAC TO FROM ABOUT 0.7 TO ABOUT 2.2 PARTS BY WEIGHT OF POLYVINYLPYRROLIDONE.
Claim 2
Dependent Claim
46 words
A TABLET INTENDED FOR ORAL ADMINISTRATION COMPRISING A CORE CONTAINING A WATER-SENSITIVE MEDICAMENT AND A COATING THEREOF WHICH ESSENTIALLY COMPRISES SHELLAC AND POLYVINYLPYRROLIDONE IN THE PROPORTION OF ABOUT ONE PART BY WEIGHT OF SHELLAC TO FROM ABOUT 0.7 TO ABOUT 2.2 PARTS BY WEIGHT OF POLYVINYLPYRROLIDONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |