Patent US3351684A successfully refreshed from Google Patents.
US3351684A
Expired / Lapsed
US
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Method of reducing carbon deposits on surfaces in contact with carbonaceous gases and subjected to elevated temperatures
Assignee: Midland Ross Corp
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Filing: 1965-03-08
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Granted: 1967-11-07
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:55
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/68; C21D1/72; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE METHOD OF PREVENTING DEPOSITION OF CARBON FROM A HEATED CARBONACEOUS GAS, THE STEPS COMPRISING: SECURING A TUBE IN CONFLUENT RELATIONSHIP WITH A FURNACE, PROVIDING THAT PORTION OF THE TUBE HAVING A TEMPERATURE BETWEEN 1100* AND 1300*F. WITH A LINING HAVING A POSITIVE SATANDARD ELECTRODE POTENTIAL, BASED UPON THE STANDARD ELECTRODE POTENTIAL OF SODIUM AS BEING NEGATIVE, AND PASSING THE CARBONACEOUS GAS THROUGH SAID TUBE.
Claim 2
Dependent Claim
66 words
IN THE METHOD OF PREVENTING DEPOSITION OF CARBON FROM A HEATED CARBONACEOUS GAS, THE STEPS COMPRISING: SECURING A TUBE IN CONFLUENT RELATIONSHIP WITH A FURNACE, PROVIDING THAT PORTION OF THE TUBE HAVING A TEMPERATURE BETWEEN 1100* AND 1300*F. WITH A LINING HAVING A POSITIVE SATANDARD ELECTRODE POTENTIAL, BASED UPON THE STANDARD ELECTRODE POTENTIAL OF SODIUM AS BEING NEGATIVE, AND PASSING THE CARBONACEOUS GAS THROUGH SAID TUBE.
References Cited (Backward Citations)
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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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |