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US2486974A
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Recovery of stearic and abietic acid from hydrogenated tall oil
Assignee: Individual
•
Filing: 1944-08-11
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Granted: 1949-11-01
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Expires: 1964-08-11
Abstract
No abstract record available.
Inventors
- 👤 Donald F Othmer
- 👤 Papps George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:01
CPC Classifications
C; C11; C11B; C11B13/00; C11B13/005; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2280842A
Cited
US2305498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |