US2547726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolation of hyodesoxycholic acid
Assignee: Uniroyal Inc
•
Filing: 1949-03-25
•
Granted: 1951-04-03
•
Expires: 1969-03-25
Abstract
No abstract record available.
Inventors
- 👤 Elwood B Trickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:10
CPC Classifications
C; C07; C07J; C07J9/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE PROCESS OF OBTAINING HYODESOXYCHOLIC ACID FROM THE HOG BILE WHICH COMPRISES SUBJECTING THE HOG BILE TO AN ALKALINE HYDROLYSIS, THEN SUBJECTING THE RESULTING BILE MATERIALS TO AN ACID HYDROLYSIS BY HEATING WITH A MINERAL ACID, AND RECOVERING HYODESOXYCHOLIC ACID FROM THE RESULTING BILE MATERIAL.
Claim 2
Dependent Claim
45 words
THE PROCESS OF OBTAINING HYODESOXYCHOLIC ACID FROM THE HOG BILE WHICH COMPRISES SUBJECTING THE HOG BILE TO AN ALKALINE HYDROLYSIS, THEN SUBJECTING THE RESULTING BILE MATERIALS TO AN ACID HYDROLYSIS BY HEATING WITH A MINERAL ACID, AND RECOVERING HYODESOXYCHOLIC ACID FROM THE RESULTING BILE MATERIAL.
References Cited (Backward Citations)
US1861319A
Cited
US2438232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |