US4873230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for the preservation of organs
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1988-07-27
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Granted: 1989-10-10
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Expires: 2008-07-27
Abstract
Abstract The present invention relates to new compositions for the preservation of organs prior to implantation comprising hydroxyethyl starch substantially free of ethylene glycol, ethylene chlorohydrin and acetone in a pharmaceutically acceptable organ perfusate.
Inventors
- 👤 Folkert O. Belzer
- 👤 James H. Southard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
A; A01; A01N; A01N1/00; A01N1/10; A01N1/12; A01N1/122; A01N1/125; A01N1/126
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
47 words
A composition of matter for the preservation of organs comprising hydroxyethyl starch having a molecular weight of from about 150,000 to about 350,000 daltons, degree of substitution of from about 0.4 to about 0.7, and being substantially free of ethylene glycol, ethylene chlorohydrin, sodium chloride and acetone.
Claim 2
Dependent Claim
47 words
A composition of matter for the preservation of organs comprising hydroxyethyl starch having a molecular weight of from about 150,000 to about 350,000 daltons, degree of substitution of from about 0.4 to about 0.7, and being substantially free of ethylene glycol, ethylene chlorohydrin, sodium chloride and acetone.
Claim 3
Dependent Claim
23 words
The composition of matter of claim 1 wherein the hydroxyethyl starch has a molecular weight of from about 200,000 to about 300,000 daltons.
References Cited (Backward Citations)
US3523938A
Cited
DE3030863A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |