US3577534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable orally active heparinoid complexes
Assignee: WAITAKI CANADA Ltd C/O OSLER HOSKIN & HARCOURT PO BOX 50 FIRST CANADIAN PLACE TORONTO ONTARIO CANADA M5X 1B8 A CANADIAN CORP
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Filing: 1969-02-14
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Granted: 1971-05-04
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Expires: 1989-02-14
Abstract
Abstract THIS INVENTION RELATES TO NEW STABLE HERPARINOID COMPLEXES WHICH ARE ABSORBABLE THROUGH THE MUCOUS MEMBRANES OF THE MAMMALIAN BODY, PREPARED BY REACTING HEPARINIC ACID OR OTHER ACID HEPARINOIDS WITH NON-TOXIC ORGANIC COMPOUNDS HAVING WEALKY BASIC OR AMPHOTERIC PROPERTIES AND CHARACTERIZED BY A BASE STRENGTH PKB IN THE RANGE OF FROM ABOUT 7.0 TO 12.5 OR BY AN ISOELECTRIC POINT PI BELOW ABOUT 9.7, TO METHODS FOR PREPARING AND USING THESE NEW HEPARINOID COMPLEXES, AND TO THERAPEUTIC COMPOSITIONS CONTAINING THEM. PARTICULARLY SUITABLE HEPARINOID COMPLEXES ARE THOSE PREPARE FROM HEPARINIC ACID AND AMINO ACIDS HAVING AN ISOELECTRIC POINT PI BELOW ABOUT 9.7.
Inventors
- 👤 Teow Yan Koh
- 👤 Kekhusroo Rustomji Bharucha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:27
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: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |