Patent US2931805A successfully refreshed from Google Patents.
US2931805A
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Spiro [bicyclo [2. 2. 1] heptane-2, 2'-alkylenimines]
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1958-11-10
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Granted: 1960-04-05
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Expires: 1978-11-10
Abstract
No abstract record available.
Inventors
- 👤 Weinstock Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:08
CPC Classifications
C; C07; C07D; C07D221/00; C07D221/02; C07D221/22; C07D203/00; C07D203/26; C07D209/00; C07D209/56; C07D209/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A THERAPEUTIC CHEMICAL COMPOUND HAVING THE FUNDAMENTAL STRUCTURAL FORMULA:
Claim 2
Dependent Claim
9 words
A THERAPEUTIC CHEMICAL COMPOUND HAVING THE FUNDAMENTAL STRUCTURAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |