Patent US2521041A successfully refreshed from Google Patents.
US2521041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for quantitative analysis of gases
Assignee: CARNEGIC ILLINOIS STEEL CORP
•
Filing: 1944-06-27
•
Granted: 1950-09-05
•
Expires: 1964-06-27
Abstract
No abstract record available.
Inventors
- 👤 Chase Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:05
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/02; G01N7/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
182 words
APPARATUS FOR QUANTITATIVELY ANALYZING GAS FOR CARBON DIOXIDE, HYDROGEN AND CARBON MONOXIDE COMPRISING A PAIR OF PUMPS, A FIRST CARBON DIOXIDE ABSORPTION MEANS, CONDUITS CONNECTING THE DISCHARGES OF SAID PUMPS WITH THE INLET OF SAID ABSORPTION MEANS, A FIRST ROTARY FLOW METER, A CONDUIT CONNECTING THE DISCHARGE OF SAID ABSORPTION MEANS WITH THE INLET OF SAID METER, A DIFFERENTIAL GEARING CONNECTING SAID PUMPS AND SAID METER, A COMBUSTION CHAMBER, A CONDUIT CONNECTING THE DISCHARGE OF SAID METER WITH THE INLET OF SAID COMBUSTION CHAMBER, A SECOND ROTARY FLOW METER, A CONDUIT CONNECTING THE DISCHARGE OF SAID COMBUSTION CHAMBER WITH THE INLET OF SAID SECOND METER, A SECOND DIFFERENTIAL GEARING CONNECTING SAID FIRST AND SECOND METERS, A SECOND CARBON DIOXIDE ABSORPTION MEANS, A CONDUIT CONNECTING THE DISCHARGE OF SAID SECOND METER WITH THE INLET OF SAID SECOND ABSORPTION MEANS, A THIRD ROTARY FLOW METER, A CONDUIT CONNECTING THE DISCHARGE OF SAID SECOND ABSORPTION MEANS WITH THE INLET OF SAID THIRD METER, A THIRD DIFFERENTIAL GEARING CONNECTING SAID SECOND AND THIRD METERS, AND A FOURTH DIFFERENTIAL GEARING CONNECTING SAID SECOND AND THIRJD DIFFERENTIAL GEARINGS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |