Patent US3343826A successfully refreshed from Google Patents.
US3343826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid fuel control system and apparatus for furnaces
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-06-03
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Granted: 1967-09-26
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Erwin H Manny
- 👤 Walter F Rollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:10
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/001; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/135
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
AN APPARATUS FOR THE CONTROL OF THE FUEL-BLAST AIR INTO A FURNACE COMPRISING MEANS FOR INJECTING HEATED BLAST AIR INTO A BLAST FURNACE, MEANS FOR INJECTING FLUID HYDROCARBON FUEL INTO ADMIXTURE WITH SAID BLAST AIR, MEANS FOR MEASURING THE RATE AT WHICH SAID BLAST AIR IS FLOWING INTO SAID BLAST FURNACE, AND MEANS FOR INCREASING AND DECREAS-
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |