US3453194A
Expired / Lapsed
US
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Anticoagulant surfaces produced by radiation grafting heparin to a silicone substrate
Assignee: Dow Silicones Corp
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Filing: 1966-08-03
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Granted: 1969-07-01
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Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Donald R Bennett
- 👤 Forrest O Stark
- 👤 George E Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:14
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; A; A61; A61L; A61L33/00; A61L33/0005; A61L33/0011; C08J2383/00; C08J2383/04; Y; Y10; Y10S; Y10S623/00; Y10S623/92; Y10S623/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE METHOD OF RENDERING SILICONE SURFACED ANTICOAGULATIVE TO BLOOD WHICH COMPRISES EXPOSING THE SILICONE SURFACE TO HIGH ENERGY IONIZING RADIATION AND CONTACTING THE SILICONE SURFACE WITH HEPARIN, WHEREBY THE HEPARIN IS GRAFTED TO THE SILICONE.
Claim 2
Independent Claim
35 words
THE METHOD OF RENDERING SILICONE SURFACED ANTICOAGULATIVE TO BLOOD WHICH COMPRISES EXPOSING THE SILICONE SURFACE TO HIGH ENERGY IONIZING RADIATION AND CONTACTING THE SILICONE SURFACE WITH HEPARIN, WHEREBY THE HEPARIN IS GRAFTED TO THE SILICONE.
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |