Patent US3948484A successfully refreshed from Google Patents.
US3351684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing carbon deposits on surfaces in contact with carbonaceous gases and subjected to elevated temperatures
Assignee: Midland Ross Corp
•
Filing: 1965-03-08
•
Granted: 1967-11-07
•
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 07:41
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)
US884181A
Cited
US2604936A
Cited
US2648976A
Cited
US2682277A
Cited
US3070990A
Cited
US3237928A
Cited
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 |