Patent US3306283A successfully refreshed from Google Patents.
US3306283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen utilization analyzer
Assignee: Iowa State University Research Foundation Inc
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Filing: 1964-02-27
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Granted: 1967-02-28
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Leon J Arp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/083; A61B5/0836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN APPARATUS FOR THE VOLUMETRIC DETERMINATION OF EXHALED CARBON DIOXIDE, MEANS INCLUDING A VALVE FOR ISOLATING A PREDETERMINED QUANTITY OF EXHALED BREATH, MEANS INCLUDING A SOURCE OF CARBON DIOXIDE COUPLED TO SAID VALVE FOR PURGING THE FIRST-MENTIONED MEANS AND DELIVERING THE CARBON DIOXIDE-DILUTED QUANTITY TO A CARBON DIOXIDE ABSORBER, A CARBON DIOXIDE ABSORBER COUPLED TO SAID VALVE, AND MEANS OPERATIVELY ASSOCIATED WITH SAID ABSORBER FOR REPORTING THE UNABSORBED PORTION OF SAID QUANTITY.
Claim 2
Dependent Claim
72 words
IN APPARATUS FOR THE VOLUMETRIC DETERMINATION OF EXHALED CARBON DIOXIDE, MEANS INCLUDING A VALVE FOR ISOLATING A PREDETERMINED QUANTITY OF EXHALED BREATH, MEANS INCLUDING A SOURCE OF CARBON DIOXIDE COUPLED TO SAID VALVE FOR PURGING THE FIRST-MENTIONED MEANS AND DELIVERING THE CARBON DIOXIDE-DILUTED QUANTITY TO A CARBON DIOXIDE ABSORBER, A CARBON DIOXIDE ABSORBER COUPLED TO SAID VALVE, AND MEANS OPERATIVELY ASSOCIATED WITH SAID ABSORBER FOR REPORTING THE UNABSORBED PORTION OF SAID QUANTITY.
References Cited (Backward Citations)
US3000377A
Cited
US2792828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |