US3832138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for performing the antihuman globulin coombs test
Assignee: Individual
•
Filing: 1972-04-06
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Granted: 1974-08-27
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Expires: 1992-04-06
Abstract
Abstract A NEW APPARATUS IS PROVIDED FOR AUTOMATICALLY PERFORMING THE COOMBS ANTI-HUMAN GLOBULIN TEST IN A CONTINUOUS FLOW SYSTEM. CENTRAL TO BOTH THE METHOD AND THE APPARATUS IS A NEW CELL WASHING TECHNIQUE WHICH PERMITS CONTINUOUS WASHING OF THE CELLS THAT ARE TO BE REACTED WITH THE COOMBS SERUM. THIS NEW TECHNIQUE INVOLVES GRAVITATIONAL SETTLING AND SEPARATION OF AGGREGATED CELLS FROM A SUPERNATANT MATERIAL. THE GRAVITATIONAL SEPARATION STEP IS ALSO USED TO SEPARATE THE AGGLUTINATED CELLS FROM THE DISSOCIATED CELLS AFTER A COOMBS REACTION HAS TAKEN PLACE.
Inventors
- 👤 N Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:14
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/96; G01N2496/00; G01N2496/05
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |