US2994724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclodiene dimer vapor phase cracking method and furnace
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-08-14
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Granted: 1961-08-01
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Expires: 1978-08-14
Abstract
No abstract record available.
Inventors
- 👤 Jr George Oliver Hillard
- 👤 Segura Marnell Albin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; C10; C10G; C10G9/00; C10G9/14; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/925; Y10S585/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR CRACKING A C5 TO C6 CYCLODIENE DIMER CONCENTRATE, WHICH COMPRISES PASSING SAID CONCENTRATE IN VAPOR PHASE AT A PRESSURE OF 0 TO 50 P.S.I.G. THROUGH A SERIES OF INTERCONNECTED CRACKING TUBES OF CONSECUTIVELY INCREASING CROSS SECTIONAL AREA, THE LARGEST CRACKING TUBES HAVING FROM 2 TO 4 TIMES THE CROSS SECTIONAL AREA OF THE SMALLEST TUBES, AND THE PRESSURE DROP THROUGH THE CRACKING TUBES BEING BELOW 20 P.S.I., AND MAINTAINING TEMPERATURES IN THE RANGE OF 500 TO 575*F. BY HEATING EACH OF THE TUBES UNIFORMLY WITH RADIANT HEAT.
Claim 2
Dependent Claim
90 words
A PROCESS FOR CRACKING A C5 TO C6 CYCLODIENE DIMER CONCENTRATE, WHICH COMPRISES PASSING SAID CONCENTRATE IN VAPOR PHASE AT A PRESSURE OF 0 TO 50 P.S.I.G. THROUGH A SERIES OF INTERCONNECTED CRACKING TUBES OF CONSECUTIVELY INCREASING CROSS SECTIONAL AREA, THE LARGEST CRACKING TUBES HAVING FROM 2 TO 4 TIMES THE CROSS SECTIONAL AREA OF THE SMALLEST TUBES, AND THE PRESSURE DROP THROUGH THE CRACKING TUBES BEING BELOW 20 P.S.I., AND MAINTAINING TEMPERATURES IN THE RANGE OF 500 TO 575*F. BY HEATING EACH OF THE TUBES UNIFORMLY WITH RADIANT HEAT.
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |