Patent US2909525A successfully refreshed from Google Patents.
US2909525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-fungal compounds
Assignee: Warner Lambert Co LLC
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Filing: 1957-08-08
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Granted: 1959-10-20
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Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 Theodore I Fand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:06
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
QUATERNARY AMMONIUM COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
6 words
QUATERNARY AMMONIUM COMPOUNDS OF THE FORMULA:
References Cited (Backward Citations)
US2734815A
Cited
US2776291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |