US2745849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying bile acids
Assignee: Armour and Co
•
Filing: 1954-06-14
•
Granted: 1956-05-15
•
Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Merlyn W Fogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:51
CPC Classifications
C; C07; C07J; C07J9/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A METHOD OF SEPARATING HYODESOXYCHOLIC ACID FROM A BILE ACID MIXTURE, WHICH MIXTURE INCLUDES HYODESOXYCHOLIC ACID ESTERS, SAID ESTERS BEING ALKYL GROUPS HAVING LESS THEN 4 CARBON ATOMS, THE STEPS OF COMBINING SAID MIXTURE WITH AN ORGANIC SOLVENT OF THE GROUP CONSISTING OF CARBON TETRACHLORIDE, TOLUENE, AND BENZENE, WHEREBY A CRYSTALLINE COMPLEX OF SAID SOLVENT AND THE HYODESOXYCHOLIC ACID ESTERS IS FORMED, SAID SEPARATING THE CRYSTALLINE COMPLEX FROM THE LIQUID RESIDUNM.
Claim 2
Dependent Claim
72 words
IN A METHOD OF SEPARATING HYODESOXYCHOLIC ACID FROM A BILE ACID MIXTURE, WHICH MIXTURE INCLUDES HYODESOXYCHOLIC ACID ESTERS, SAID ESTERS BEING ALKYL GROUPS HAVING LESS THEN 4 CARBON ATOMS, THE STEPS OF COMBINING SAID MIXTURE WITH AN ORGANIC SOLVENT OF THE GROUP CONSISTING OF CARBON TETRACHLORIDE, TOLUENE, AND BENZENE, WHEREBY A CRYSTALLINE COMPLEX OF SAID SOLVENT AND THE HYODESOXYCHOLIC ACID ESTERS IS FORMED, SAID SEPARATING THE CRYSTALLINE COMPLEX FROM THE LIQUID RESIDUNM.
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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |