US2185541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of alpha higher carboxylic acids
Assignee: EMULSOL Corp
•
Filing: 1937-04-09
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Granted: 1940-01-02
•
Expires: 1957-04-09
Abstract
No abstract record available.
Inventors
- 👤 Frank J Cahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:58
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/17; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; B03D2201/00; B03D2201/02
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) | 1943-01-01 | 1943-07-03 | 1944-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-01 | 1947-07-03 | 1948-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-01 | 1951-07-03 | 1952-01-02 | $7700.00 | Window Closed / Lapsed |