Patent US2263176A successfully refreshed from Google Patents.
US2263176A
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Process of recovering nitrogen bases
Assignee: TIDE WATER ASSOCIATED OIL Co
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Filing: 1941-03-19
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Granted: 1941-11-18
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Expires: 1961-03-19
Abstract
No abstract record available.
Inventors
- 👤 Lazar Arthur
- 👤 Lionel S Galstaun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:57
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/14; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06; C10G17/07
Claims Analysis
Total Claims: 0
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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) | 1944-11-17 | 1945-05-19 | 1945-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-17 | 1949-05-19 | 1949-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-17 | 1953-05-19 | 1953-11-18 | $7700.00 | Window Closed / Lapsed |