US2489672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialiphaticaminoalkylcardanol
Assignee: TIDE WATER ASSOCIATED OIL Co
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Filing: 1947-11-19
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Granted: 1949-11-29
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Expires: 1967-11-19
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Revukas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/74; C07C215/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB272509A
Cited
FR635578A
Cited
US1838070A
Cited
US1921292A
Cited
US1821095A
Cited
US1838077A
Cited
US2335603A
Cited
US2363134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |