Patent JPS6130352A successfully refreshed from Google Patents.
Patent US3149279A successfully refreshed from Google Patents.
US3149279A
Expired / Lapsed
US
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Gas phase detection by electron emission and ionization
Assignee: Burrell Corp
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Filing: 1959-12-18
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Granted: 1964-09-15
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Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Guild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:26
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/70; G01N27/00; G01N27/62; G01N27/68; G01N27/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
APPARATUS FOR DETECTING SMALL QUANTITIES OF GAS PHASE MATERIAL COMPRISING AN ELECTRON TUBE GENERATOR IN THE SHAPE OF A HOUSING HAVING AN INLET AND OUTLET FOR PASSING GASES THERETHROUGH, A FILAMENT DISPOSED IN THE PATH OF THE GASES FLOWING THROUGH SAID HOUSING, AND FILAMENT BEING CONNECTED TO A SOURCE OF ELECTRICAL POWER, A GRID DISPOSED AROUND SAID FILAMENT, A PLATE SURROUNDING SAID GRID, AND A SECOND PLATE DISPOSED TRANSVERESLY OF AND IN THE PATH OF THE GAS FLOW, SAID GRID AND PLATES BEING CONNECTED IN AN ELECTRICAL CIRCUIT HAVING MEANS FOR MEASURING THE RELATIVE CURRENT FLOW FOR THE DIFFERENT GASES PASSING THROUGH SAID GENERATOR.
Claim 2
Dependent Claim
104 words
APPARATUS FOR DETECTING SMALL QUANTITIES OF GAS PHASE MATERIAL COMPRISING AN ELECTRON TUBE GENERATOR IN THE SHAPE OF A HOUSING HAVING AN INLET AND OUTLET FOR PASSING GASES THERETHROUGH, A FILAMENT DISPOSED IN THE PATH OF THE GASES FLOWING THROUGH SAID HOUSING, AND FILAMENT BEING CONNECTED TO A SOURCE OF ELECTRICAL POWER, A GRID DISPOSED AROUND SAID FILAMENT, A PLATE SURROUNDING SAID GRID, AND A SECOND PLATE DISPOSED TRANSVERESLY OF AND IN THE PATH OF THE GAS FLOW, SAID GRID AND PLATES BEING CONNECTED IN AN ELECTRICAL CIRCUIT HAVING MEANS FOR MEASURING THE RELATIVE CURRENT FLOW FOR THE DIFFERENT GASES PASSING THROUGH SAID GENERATOR.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |