US4112925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood sample container having an anticoagulant coating of polyvinyl pyrrolidone and a salt of ethylene diamine tetracetate
Assignee: Corning Glass Works
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Filing: 1977-06-10
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Granted: 1978-09-12
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Expires: 1997-06-10
Abstract
Abstract An anticoagulant coating composition suitable for coating the interior surfaces of a blood microsample collection tube, such as a capillary tube, is disclosed. The coating composition consists essentially of ethylene diamine tetracetate held in a matrix of polyvinyl pyrrolidone. Both the ethylene diamine tetracetate and the polyvinyl pyrrolidone are dissolved in a water-alcohol mixture to form a coating composition solution.
Inventors
- 👤 Kevin J. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:32
CPC Classifications
A; A61; A61L; A61L33/00; A61L33/06; A61L33/064; A61J; A61J1/00; C; C09; C09D; C09D139/00; C09D139/04; C09D139/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A blood sample container comprising a capillary tube, and an anticoagulant coating applied to the interior surface of said capillary tube consisting essentially of from about 10 percent to about 95 percent by weight of a salt of ethylene diamine tetracetate, and from about 5 percent to about 90 percent by weight of polyvinyl pyrrolidone.
Claim 2
Dependent Claim
55 words
A blood sample container comprising a capillary tube, and an anticoagulant coating applied to the interior surface of said capillary tube consisting essentially of from about 10 percent to about 95 percent by weight of a salt of ethylene diamine tetracetate, and from about 5 percent to about 90 percent by weight of polyvinyl pyrrolidone.
References Cited (Backward Citations)
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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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |