Patent US3894716A successfully refreshed from Google Patents.
Patent US2736268A successfully refreshed from Google Patents.
Patent US3662222A successfully refreshed from Google Patents.
US3662222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistance wire igniter with a cooling terminal posts construction
Assignee: TDK Micronas GmbH
•
Filing: 1970-05-07
•
Granted: 1972-05-09
•
Expires: 1990-05-07
Abstract
Abstract A resistance wire igniter for a pilot light of a gas fuel burning apparatus including an electric current heated filament having molybdenum and portions tapered toward and fixed with a molybdenum disilicide central portion. Terminal posts construction for keeping the filament ends cool so that they will not oxidize.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:04
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/22; G; G01; G01F; G01F1/00; G01F1/05; G01F1/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1704515A
Cited
US1963328A
Cited
US2372212A
Cited
US2487754A
Cited
US2698423A
Cited
US2902578A
Cited
US3017540A
Cited
US3100828A
Cited
US3190953A
Cited
US3163709A
Cited
US3437880A
Cited
US3562590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |