Patent US2710880A successfully refreshed from Google Patents.
US2710880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of lactic acid
Assignee: Individual
•
Filing: 1953-05-07
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Granted: 1955-06-14
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Expires: 1973-05-07
Abstract
No abstract record available.
Inventors
- 👤 Edward M Filachione
- 👤 Martin L Fein
- 👤 Jr Edward H Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:52
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE PROCESS OF RECOVERING PURIGIED LACTIC ACID FROM AQUEOUS SOLUTION WHICH COMPRISES DISSOLVING IN SAID SOLUTION AN AMOUNT OF A SOLUBLE INORGANIC SALT AT LEAST EQUIVALENT TO THE LACTIC ACID IN THE SOLUTION, THEN EXTRACTING THE LACTIC ACID FROM THE RESULTING SOLUTION BY CONTACTING THE SOLUTION WITH AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALCOHOLS AND KETONES HAVING THREE TO FOUR CARBON ATOMS, AND RECOVERING THE LATIC ACID FROM TO ORGANIC SOLVENT.
Claim 2
Dependent Claim
75 words
THE PROCESS OF RECOVERING PURIGIED LACTIC ACID FROM AQUEOUS SOLUTION WHICH COMPRISES DISSOLVING IN SAID SOLUTION AN AMOUNT OF A SOLUBLE INORGANIC SALT AT LEAST EQUIVALENT TO THE LACTIC ACID IN THE SOLUTION, THEN EXTRACTING THE LACTIC ACID FROM THE RESULTING SOLUTION BY CONTACTING THE SOLUTION WITH AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALCOHOLS AND KETONES HAVING THREE TO FOUR CARBON ATOMS, AND RECOVERING THE LATIC ACID FROM TO ORGANIC SOLVENT.
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) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |