US2685553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement coated tablets
Assignee: Winthrop Stearns Inc
•
Filing: 1951-03-30
•
Granted: 1954-08-03
•
Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Richard H Carroll
- 👤 Daniel J Spadaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:10
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/2813
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A MEDICINAL TABLET HAVING HIGH STRUCTURAL STRENGTH INCLUDING A CORE COMPRISING THE MEDICAMENT, AND A COATING EXTERIOR THERETO COMPRISED ESSENTIALLY OF A MULTIPLICITY OF THIN, SUPERIMPOSED LAYERS OF A WATER-SET HYDRAULIC CEMENT.
Claim 2
Dependent Claim
32 words
A MEDICINAL TABLET HAVING HIGH STRUCTURAL STRENGTH INCLUDING A CORE COMPRISING THE MEDICAMENT, AND A COATING EXTERIOR THERETO COMPRISED ESSENTIALLY OF A MULTIPLICITY OF THIN, SUPERIMPOSED LAYERS OF A WATER-SET HYDRAULIC CEMENT.
References Cited (Backward Citations)
US672672A
Cited
US721633A
Cited
GB228940A
Cited
US2155444A
Cited
GB493934A
Cited
US2146867A
Cited
US2262087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |