US2845338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel additive for removing and inhibiting fireside deposits
Assignee: ChampionX LLC
•
Filing: 1953-10-15
•
Granted: 1958-07-29
•
Expires: 1973-10-15
Abstract
No abstract record available.
Inventors
- 👤 John W Ryznar
- 👤 Thompson Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:28
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/10; C10L10/00; C10L10/04; C10L1/00; C10L1/10; C10L1/12; C10L1/1225; C10L1/1233; C10L1/14; C10L1/18; C10L1/188; C10L1/1881; C10L1/1886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
AN ADDITIVE COMPOSITION FOR A CARBONACEOUS FUEL CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, COBALT, MANGANESE, IRON AND CALCIUM WHICH IS EFFECTIVE IN LOWERING THE IGNITION TEMPERATURE OF CARBON AND A MAGNESIUM COMPOUND FROM THE GROUP CONSISTING OF MAGNESIUM OXIDE AND MAGNESIUM COMPOUNDS DECOMPOSING TO MAGNESIUM OXIDE UNDER COMBUSTION CONDITIONS, THE WEIGHT RATIO OF SAID MAGNESIUM COMPOUND, EXPRESSED AS MG, TO SAID COMPOUND OF A METAL, EXPRESSED AS SAID METAL, BEING WITHIN THE RANGE OF 5:1 TO 35:1, AND SAID ADDITIVE COMPOSITION BEING EFFECTIVE TO INHIBIT SLAG FORMATION WHEN A FRACTION OF A PERCENT THEREOF BY WEIGHT IS ADDED TO A CARBONACEOUS FUEL.
Claim 2
Dependent Claim
115 words
AN ADDITIVE COMPOSITION FOR A CARBONACEOUS FUEL CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, COBALT, MANGANESE, IRON AND CALCIUM WHICH IS EFFECTIVE IN LOWERING THE IGNITION TEMPERATURE OF CARBON AND A MAGNESIUM COMPOUND FROM THE GROUP CONSISTING OF MAGNESIUM OXIDE AND MAGNESIUM COMPOUNDS DECOMPOSING TO MAGNESIUM OXIDE UNDER COMBUSTION CONDITIONS, THE WEIGHT RATIO OF SAID MAGNESIUM COMPOUND, EXPRESSED AS MG, TO SAID COMPOUND OF A METAL, EXPRESSED AS SAID METAL, BEING WITHIN THE RANGE OF 5:1 TO 35:1, AND SAID ADDITIVE COMPOSITION BEING EFFECTIVE TO INHIBIT SLAG FORMATION WHEN A FRACTION OF A PERCENT THEREOF BY WEIGHT IS ADDED TO A CARBONACEOUS FUEL.
References Cited (Backward Citations)
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US2148140A
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US2560542A
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US2566320A
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US2622671A
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US2781005A
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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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |