Patent US2853421A successfully refreshed from Google Patents.
US2853421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelatin pan coating
Assignee: Merck and Co Inc
•
Filing: 1956-10-04
•
Granted: 1958-09-23
•
Expires: 1976-10-04
Abstract
No abstract record available.
Inventors
- 👤 Howard R Adams
- 👤 Cherkas Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:43
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2833; A61K9/2873; A61K9/282; A61K9/2826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A MEDICINAL TABLET OR PILL INCLUDING A CORE COMPRISING THE MEDICAMENT AND A COATING EXTERIOR THERETO COMPRISING A MULTIPLICITY OF THIN, SUPERIMPOSED LAYERS OF A COMPOSITION CONTAINING AS THE ESSENTIAL COATING MATERIAL INGREDIENTS INTERMIXED GELATIN AND SUGAR IN THE PROPORTION OF 11/2 TO 4102 PARTS BY WEIGHT OF GELATIN TO 1 PART BY WEIGHT OF SUGAR.
Claim 2
Dependent Claim
56 words
A MEDICINAL TABLET OR PILL INCLUDING A CORE COMPRISING THE MEDICAMENT AND A COATING EXTERIOR THERETO COMPRISING A MULTIPLICITY OF THIN, SUPERIMPOSED LAYERS OF A COMPOSITION CONTAINING AS THE ESSENTIAL COATING MATERIAL INGREDIENTS INTERMIXED GELATIN AND SUGAR IN THE PROPORTION OF 11/2 TO 4102 PARTS BY WEIGHT OF GELATIN TO 1 PART BY WEIGHT OF SUGAR.
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) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |