Patent US2813874A successfully refreshed from Google Patents.
US2813874A
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Azacyclohexane compounds and methods for preparing them
Assignee: Wyeth LLC
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Filing: 1954-09-03
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Granted: 1957-11-19
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Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 William F Bruce
- 👤 Diamond Julius
- 👤 Huber Richard De Vere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:49
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62; C07D211/64; C07D211/40; C07D211/44; C07D211/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A QUATERNARY AMMONIUM SALT WHICH CONTAINS THE CATION
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |