US3092799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting combustible gases having an electrically conductive member enveloped in a refractory material
Assignee: National Research Development Corp UK
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Filing: 1959-02-03
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Granted: 1963-06-04
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Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Baker Alan Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:41
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
AN ELECTRICALLY HEATABLE ELEMENT COMPRISING A METAL FILAMENT, A REFRACTORY MATERIAL ENVELOPING SAID METAL FILAMENT AND COATING OF A CATALYTIC MATERIAL ABOUT SAID REFRACTORY MATERIAL, IN WHICH THE COATING OF CATALYTIC MATERIAL CONSISTS OF PALLADIUM.
Claim 2
Dependent Claim
35 words
AN ELECTRICALLY HEATABLE ELEMENT COMPRISING A METAL FILAMENT, A REFRACTORY MATERIAL ENVELOPING SAID METAL FILAMENT AND COATING OF A CATALYTIC MATERIAL ABOUT SAID REFRACTORY MATERIAL, IN WHICH THE COATING OF CATALYTIC MATERIAL CONSISTS OF PALLADIUM.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |