Patent US2759354A successfully refreshed from Google Patents.
US2759354A
Expired / Lapsed
US
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Isothermal systems for gas analysis
Assignee: Leeds and Northrup Co
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Filing: 1950-09-26
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Granted: 1956-08-21
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Expires: 1970-09-26
Abstract
No abstract record available.
Inventors
- 👤 Robert H Cherry
- 👤 Gerard M Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:46
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74; G01N27/02; G01N27/04; G01N27/14; G01N27/16; G01N27/18; G01N27/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN ELECTRICAL GAS-ANALYSIS SYSTEM COMPRISING A REFERENCE CELL AND AN ANALYSIS CELL TRAVERSED BY GAS TO BE ANALYZED, SAID ANALYSIS CELL INCLUDING A TEMPERATURE-SENSITIVE ELECTRICALLY-HEATED RESISTOR SENSITIZED TO A CHARACTERISTIC OF A SELECTED COMPONENT OF THE GAS AND TO AMBIENT CONDITIONS, SAID REFERENCE CELL INCLUDING A TEMPERATURESENSITIVE ELECTRICALLY-HEATED RESISTOR SENSITIVE ONLY TO SAID AMBIEND CONDITIONS, BALANCEABLE NETWORKS RESPECTIVELY INCLUDING SAID RESISTORS, MEANS FOR SUPPLYING HEATING CURRENT FOR SAID RESISTORS INCLUDING ADJUSTABLE MEANS SUITED FOR
Claim 2
Dependent Claim
74 words
AN ELECTRICAL GAS-ANALYSIS SYSTEM COMPRISING A REFERENCE CELL AND AN ANALYSIS CELL TRAVERSED BY GAS TO BE ANALYZED, SAID ANALYSIS CELL INCLUDING A TEMPERATURE-SENSITIVE ELECTRICALLY-HEATED RESISTOR SENSITIZED TO A CHARACTERISTIC OF A SELECTED COMPONENT OF THE GAS AND TO AMBIENT CONDITIONS, SAID REFERENCE CELL INCLUDING A TEMPERATURESENSITIVE ELECTRICALLY-HEATED RESISTOR SENSITIVE ONLY TO SAID AMBIEND CONDITIONS, BALANCEABLE NETWORKS RESPECTIVELY INCLUDING SAID RESISTORS, MEANS FOR SUPPLYING HEATING CURRENT FOR SAID RESISTORS INCLUDING ADJUSTABLE MEANS SUITED FOR
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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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |