Patent US2499417A successfully refreshed from Google Patents.
US2499417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trialkyl ammonium halides of benzhydryl-aminoethyl ether
Assignee: Parke Davis and Co LLC
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Filing: 1946-07-15
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Granted: 1950-03-07
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Expires: 1966-07-15
Abstract
No abstract record available.
Inventors
- 👤 Jr George Rieveschl
- 👤 Robert W Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:54
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA,
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |