US3262854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the recovery of heparin
Assignee: Individual
•
Filing: 1963-03-29
•
Granted: 1966-07-26
•
Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Yasuda Takamasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:30
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; C; C08; C08B; C08B37/00; C08B37/006; C08B37/0063; C08B37/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD FOR THE RECOVERY OF HEPARIN FROM ANIMAL TISSUE CONTAINING THE SAME, COMPRISING THE STEPS OF ADDING PICRIC ACID TO AN AQUEOUS ALKALINE DECOCTION OF THE ANIMAL TISSUE AND THEM MAINTAINING THE RESULTING MIXTURE UNTIL THE PROTEIN IS HYDROLYZED TO LOSE ITS BONDING POWER FOR HEPARIN.
Claim 2
Independent Claim
47 words
A METHOD FOR THE RECOVERY OF HEPARIN FROM ANIMAL TISSUE CONTAINING THE SAME, COMPRISING THE STEPS OF ADDING PICRIC ACID TO AN AQUEOUS ALKALINE DECOCTION OF THE ANIMAL TISSUE AND THEM MAINTAINING THE RESULTING MIXTURE UNTIL THE PROTEIN IS HYDROLYZED TO LOSE ITS BONDING POWER FOR HEPARIN.
References Cited (Backward Citations)
US2797184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |