Patent US2725399A successfully refreshed from Google Patents.
US2725399A
Expired / Lapsed
US
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Tertiary dialkylamino propanols
Assignee: Wyeth Holdings LLC
•
Filing: 1949-11-03
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Granted: 1955-11-29
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Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Denton John Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:57
CPC Classifications
C; C07; C07C; C07C217/00; C07C217/54; C07C217/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
1-DIETHYLAMINO-3-PHENYL-3-PENTANOL.
Claim 2
Dependent Claim
1 words
1-DIETHYLAMINO-3-PHENYL-3-PENTANOL.
References Cited (Backward Citations)
US828846A
Cited
US1978539A
Cited
FR698687A
Cited
US2282907A
Cited
CH234785A
Cited
CH240363A
Cited
US2411664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |