US2859154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for concentrating acetic acid and other lower fatty acids using entrainers for the acids
Assignee: Individual
•
Filing: 1955-09-26
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Granted: 1958-11-04
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Donald F Othmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:26
CPC Classifications
C; C11; C11B; C11B13/00; C11B13/005; C07; C07C; C07C51/00; C07C51/42; C07C51/43; C07C51/44; C07C51/46; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74; Y10; Y10S; Y10S159/00; Y10S159/19
Claims Analysis
Total Claims: 0
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |