Patent US4623718A successfully refreshed from Google Patents.
US4623718A
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Novel composition of matter of antithrombin III bound to a heparin fragment
Assignee: Pfizer Health AB
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Filing: 1983-06-10
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Granted: 1986-11-18
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Expires: 2003-06-10
Abstract
Abstract Novel chemical compounds which are heparin fragments with a molecular weight of from 2,000 to 5,500 covalently bound to antithrombin III, and their use in medicine.
Inventors
- 👤 Desire J. Collen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/61; A61P; A61P7/00; A61P7/02; C; C08; C08B; C08B37/00; C08B37/006; C08B37/0063; C08B37/0075
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
16 words
A heparin fragment with a molecular weight of 2,000 to, 5,500 covalently bound to antithrombin III.
Claim 2
Dependent Claim
16 words
A heparin fragment with a molecular weight of 2,000 to, 5,500 covalently bound to antithrombin III.
Claim 3
Dependent Claim
22 words
The heparin fragment bound to antithrombin III of claim 1 wherein the ratio of the heparin fragments to antithrombin III is 1:1.
Claim 4
Dependent Claim
32 words
The heparin fragment bound to antithrombin III of claim 1 wherein the heparin fragment, prior to being covalently bound to the antithrombin III, contains from 1 to 2 amino groups per fragment.
Claim 5
Dependent Claim
32 words
The heparin fragment bound to antithrombin III of claim 1 wherein the heparin fragment, prior to being covalently bound to the antithrombin III, includes one terminal group which contains an aldehyde function.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |