US4116898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-thrombogenic articles
Assignee: Becton Dickinson and Co
•
Filing: 1977-01-31
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Granted: 1978-09-26
•
Expires: 1997-01-31
Abstract
Abstract The disclosure is of articles having reduced thrombogenicity and which are useful for purposes requiring their contact with whole blood. The articles comprise solid, polymeric resin substrates to which there is fixed a compound of the formula: ##STR1## wherein A represents the residue of sodium heparin after removal of the sodium ion. The articles advantageously exhibit low toxicity and excellent blood compatibility when used for purposes which bring them into contact with whole blood for prolonged periods of time.
Inventors
- 👤 Betty J. Dudley
- 👤 Joel L. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:30
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0063; C08B37/0075; C08L; C08L5/00; C08L5/10; Y; Y10; Y10S; Y10S623/00; Y10S623/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
An article for use in association with whole blood, which comprises; a solid polymeric resin substrate; and a compound of the formula: ##STR4## wherein A represents the residue of sodium heparin after removal of the sodium ion, affixed to said substrate said resin being polyethylene.
Claim 2
Dependent Claim
45 words
An article for use in association with whole blood, which comprises; a solid polymeric resin substrate; and a compound of the formula: ##STR4## wherein A represents the residue of sodium heparin after removal of the sodium ion, affixed to said substrate said resin being polyethylene.
References Cited (Backward Citations)
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US3585647A
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US3514438A
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US3616935A
Cited
US3766104A
Cited
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Cited
US3673612A
Cited
US3844989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |