US3080855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace flue gas composition control
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1960-04-12
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Granted: 1963-03-12
•
Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 Warren K Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:06
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; F; F23; F23N; F23N5/00; F23N5/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN OPERATING A FURNACE HAVING A COMBUSTION ZONE IN WHICH A CARBONACEOUS FUEL IS BURNED WITH AIR TO PRODUCE HOT COMBUSTION GASES CONTAINING N2, O2, H2O, SO2, SO3 WITH COMBUSTIBLE CO, H2 AND HYDROCARBON, THE IMPROVEMENT WHICH COMPRISES BURNING THE FUEL WITH A MINIUM EXCESS OF AIR IN SAID COMBUSTION ZONE, PASSING RESULTING HOT GASEOUS COMBUSTION PRODUCTS FROM SAID COM-
Claim 2
Dependent Claim
60 words
IN OPERATING A FURNACE HAVING A COMBUSTION ZONE IN WHICH A CARBONACEOUS FUEL IS BURNED WITH AIR TO PRODUCE HOT COMBUSTION GASES CONTAINING N2, O2, H2O, SO2, SO3 WITH COMBUSTIBLE CO, H2 AND HYDROCARBON, THE IMPROVEMENT WHICH COMPRISES BURNING THE FUEL WITH A MINIUM EXCESS OF AIR IN SAID COMBUSTION ZONE, PASSING RESULTING HOT GASEOUS COMBUSTION PRODUCTS FROM SAID COM-
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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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |