US3420931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical dragee
Assignee: Merck KGaA
•
Filing: 1965-04-20
•
Granted: 1969-01-07
•
Expires: 1985-04-20
Abstract
No abstract record available.
Inventors
- 👤 Whilhelm Daum
- 👤 Hans Joachim Sippel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:01
CPC Classifications
A; A23; A23G; A23G3/00; A23G3/34; A23G3/50; A23G3/54; A23G3/02; A23G3/20; A23G3/26; A23G3/343; A23G4/00; A23G4/02; A23G4/025; A23G4/18; A23G4/20; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/282; A61K9/2826; A61K9/2833; A61K9/284; A23G2200/00; A23G2200/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2991226A
Cited
US2954322A
Cited
US3148123A
Cited
US3097144A
Cited
US3331696A
Cited
US3256153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |