Patent US2936760A successfully refreshed from Google Patents.
Patent US3204631A successfully refreshed from Google Patents.
US3204631A
Expired / Lapsed
US
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Blood oxygenator and pump apparatus
Assignee: Individual
•
Filing: 1961-05-01
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Granted: 1965-09-07
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Louis G Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:27
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; A61M1/322; A61M1/325; A61M1/36; A61M1/3621; A61M1/3623; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN APPARATUS FOR SUPPLYING BLOOD TO A PATIENT: A CONTAINER FOR BLOOD; A PUMP CHAMBER HAVING AN UPPER BLOOD INLET COMMUNICATING WITH A LOWER PORTION OF SAID CONTAINER AND A LOWER OUTLET; PISTON MEANS MOVABLE IN SAID CHAMBER AND FORCING BLOOD THEREIN INTO SAID OUTLET; A VALVE DEVICE BUOYANT IN BLOOD MOVABLE UPWARDLY BY BLOOD IN SAID CHAMBER TO CLOSED POSITION ACROSS SAID INLET; AND MEANS RETAINING SAID VALVE DEVICE ADJACENT TO SAID INLET WHEN SAID VALVE DEVICE IS IN OPEN POSITION.
Claim 2
Dependent Claim
82 words
IN APPARATUS FOR SUPPLYING BLOOD TO A PATIENT: A CONTAINER FOR BLOOD; A PUMP CHAMBER HAVING AN UPPER BLOOD INLET COMMUNICATING WITH A LOWER PORTION OF SAID CONTAINER AND A LOWER OUTLET; PISTON MEANS MOVABLE IN SAID CHAMBER AND FORCING BLOOD THEREIN INTO SAID OUTLET; A VALVE DEVICE BUOYANT IN BLOOD MOVABLE UPWARDLY BY BLOOD IN SAID CHAMBER TO CLOSED POSITION ACROSS SAID INLET; AND MEANS RETAINING SAID VALVE DEVICE ADJACENT TO SAID INLET WHEN SAID VALVE DEVICE IS IN OPEN POSITION.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |