US4069185A
Expired / Lapsed
US
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Anticoagulant coating composition
Assignee: Corning Glass Works
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Filing: 1976-04-22
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Granted: 1978-01-17
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Expires: 1996-04-22
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
2026-10-25 04:16
CPC Classifications
C; C09; C09D; C09D139/00; C09D139/04; C09D139/06; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
An anticoagulant coating solution comprising a solvent and a filler, said filler 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
46 words
An anticoagulant coating solution comprising a solvent and a filler, said filler 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 3
Dependent Claim
25 words
The anticoagulant coating solution of claim 1 wherein said solvent consists essentially up to about 90 percent by weight alcohol and the remainder being water.
Claim 4
Dependent Claim
13 words
The anticoagulant coating solution of claim 2 wherein said alcohol is methyl alcohol.
Claim 5
Dependent Claim
32 words
The anticoagulant coating solution of claim 1 wherein said filler consists essentially of 50 percent by weight of a salt of ethylene diamine tetracetate and 50 percent by weight of polyvinyl pyrrolidone.
Claim 6
Dependent Claim
37 words
An anticoagulant coating 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 7
Dependent Claim
37 words
An anticoagulant coating 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 8
Dependent Claim
30 words
The anticoagulant coating of claim 5 consisting essentially of about 50 percent by weight of a salt of ethylene diamine tetracetate and about 50 percent by weight of polyvinyl pyrrolidone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |