US2610197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and refining of organic acids
Assignee: Union Oil Company of California
•
Filing: 1947-07-05
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Granted: 1952-09-09
•
Expires: 1967-07-05
Abstract
No abstract record available.
Inventors
- 👤 Orin D Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:03
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD FOR SEPARATING ORGANIC HYDROXY ACIDS FROM MIXTURES WITH OTHER CLASSES OF ORGANIC ACIDS HAVING FROM ABOUT 6 TO 40 CARBON ATOMS PER MOLECULE WHICH COMPRISES CONTACTING SAID ACID MIXTURE WITH AN AQUEOUS BORATE SALT EXTRACTANT CONTAINING A WATER-SOLUBLE BORATE SALT AND SEPARATING ANAQUEOUS PHASE CONTAINING SAID HYDROXY ACIDS SOLUBLILIZED BY SAID BORATE EXTRACTANT FROM SAID OTHER CLASSES OF ORGANIC ACIDS.
Claim 2
Independent Claim
62 words
A METHOD FOR SEPARATING ORGANIC HYDROXY ACIDS FROM MIXTURES WITH OTHER CLASSES OF ORGANIC ACIDS HAVING FROM ABOUT 6 TO 40 CARBON ATOMS PER MOLECULE WHICH COMPRISES CONTACTING SAID ACID MIXTURE WITH AN AQUEOUS BORATE SALT EXTRACTANT CONTAINING A WATER-SOLUBLE BORATE SALT AND SEPARATING ANAQUEOUS PHASE CONTAINING SAID HYDROXY ACIDS SOLUBLILIZED BY SAID BORATE EXTRACTANT FROM SAID OTHER CLASSES OF ORGANIC ACIDS.
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |