US3232837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heparin derivatives and methods of preparing same
Assignee: Sanofi Aventis France
•
Filing: 1961-06-19
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Granted: 1966-02-01
•
Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Nomine Gerard
- 👤 Bucourt Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:48
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0063; C08B37/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
HEPARINAMIDE SELECTED FROM THE GROUP CONSISTING OF HEPARINAMIDE AND THE ALKALI METAL SALTS THEREOF, N-LOWER ALKYL HEPARINMADE AND THE ALKALI METAL SALTS THEREOF, SAID HEPARINAMIDE HAVING 60 TO 95% OF THEIR CARBOXY GROUP AMIDIFIED.
Claim 2
Dependent Claim
34 words
HEPARINAMIDE SELECTED FROM THE GROUP CONSISTING OF HEPARINAMIDE AND THE ALKALI METAL SALTS THEREOF, N-LOWER ALKYL HEPARINMADE AND THE ALKALI METAL SALTS THEREOF, SAID HEPARINAMIDE HAVING 60 TO 95% OF THEIR CARBOXY GROUP AMIDIFIED.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |