US2681931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic amides of bicyclo [2. 2.1]-5-heptene-2-carboxylic acid and 2-norcamphanecarboxylic acid and derivatives thereof
Assignee: GD Searle LLC
•
Filing: 1951-12-07
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Granted: 1954-06-22
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Expires: 1971-12-07
Abstract
No abstract record available.
Inventors
- 👤 William W Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:51
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN AMIDE OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
AN AMIDE OF THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2338178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |