US3795581A
Expired / Lapsed
US
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Method of maintaining or restoring the 2,3-diphosphoglycerate content of human red cells
Assignee: American Hospital Supply Corp
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Filing: 1971-11-01
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Granted: 1974-03-05
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Expires: 1991-11-01
Abstract
Abstract VIABLE HUMAN RED CELLS CONTACTED WITH AN AQUEOUS SOLUTION OF DIHYDROXYACETONE (DHA), AND HELD IN CONTACT WITH THE DHA SOLUTION TO MAINTAIN AND/OR INCREASE THEIR 2,3-DIPHOSPHOGLYCERATE (2,3-DPG) CONTENT. THE METHOD IS PARTICULARLY USEFUL IN THE STORAGE AND PRESERVATION OF WHOLE BLOOD.
Inventors
- 👤 F Deindoerfer
- 👤 J Brake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:42
CPC Classifications
A; A01; A01N; A01N1/00; A01N1/10; A01N1/12; A01N1/122; A01N1/126
Claims Analysis
Total Claims: 0
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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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |