Patent US2645673A successfully refreshed from Google Patents.
US2645673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing acetylene
Assignee: Eastman Kodak Co
•
Filing: 1945-12-08
•
Granted: 1953-07-14
•
Expires: 1965-12-08
Abstract
No abstract record available.
Inventors
- 👤 Hasche Rudolph Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; C10; C10G; C10G2400/00; C10G2400/20; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/922; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS OF PRODUCING AN OFF GAS WHICH CONTAINS A SUBSTANTIAL AMOUNT OF ACETYLENE FROM AN IN-GAS CONTAINING A SUITABLE STOCK HYDROCARBON WHICH CAN BE PYROLYZED TO PRODUCE ACETYLENE WHICH COMPRISES FIRING IN THE SAME DIRECTION A FIRST AND A SECOND SUBSTANTIALLY ADJACENT REGENERATIVE HEATING ZONES, THE SECOND ZONE BEING FIRED TO ABOVE 2000* F. AND TO A HIGHER TEMPERATURE THAN THE FIRST ZONE, PURGING THE ZONES, PASSING THE IN-GAS INTO THE FIRST REGENERATIVE ZONE AT A POINT IN THE ZONE SUBSTANTIALLY OPPOSITE FROM THE POINT OF FIRING, CONDUCTING THE IN-GAS THROUGH THE FIRST ZONE AND OUT THEREOF SUBSTANTIALLY AT THE POINT OF FIRING, INJECTING A MOTIVATING GAS INTO THE GAS WHICH EMERGES FROM THE FIRST ZONE AND CONDUCTING THIS MOTIVATED GAS INTO THE SECOND HOTTER REGENERATIVE ZONE, THE POINT OF ENTRY INTO THE SECOND
Claim 2
Dependent Claim
135 words
A PROCESS OF PRODUCING AN OFF GAS WHICH CONTAINS A SUBSTANTIAL AMOUNT OF ACETYLENE FROM AN IN-GAS CONTAINING A SUITABLE STOCK HYDROCARBON WHICH CAN BE PYROLYZED TO PRODUCE ACETYLENE WHICH COMPRISES FIRING IN THE SAME DIRECTION A FIRST AND A SECOND SUBSTANTIALLY ADJACENT REGENERATIVE HEATING ZONES, THE SECOND ZONE BEING FIRED TO ABOVE 2000* F. AND TO A HIGHER TEMPERATURE THAN THE FIRST ZONE, PURGING THE ZONES, PASSING THE IN-GAS INTO THE FIRST REGENERATIVE ZONE AT A POINT IN THE ZONE SUBSTANTIALLY OPPOSITE FROM THE POINT OF FIRING, CONDUCTING THE IN-GAS THROUGH THE FIRST ZONE AND OUT THEREOF SUBSTANTIALLY AT THE POINT OF FIRING, INJECTING A MOTIVATING GAS INTO THE GAS WHICH EMERGES FROM THE FIRST ZONE AND CONDUCTING THIS MOTIVATED GAS INTO THE SECOND HOTTER REGENERATIVE ZONE, THE POINT OF ENTRY INTO THE SECOND
References Cited (Backward Citations)
US1234886A
Cited
US1880309A
Cited
GB390849A
Cited
GB416921A
Cited
US2030070A
Cited
US2164762A
Cited
US2113536A
Cited
GB471837A
Cited
GB479438A
Cited
US2383772A
Cited
US2319679A
Cited
US2475093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |