US2801270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of cyclodienes with vapor phase cracking
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-11-16
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Granted: 1957-07-30
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Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Nelson
- 👤 Fred W Banes
- 👤 Addison W Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; C07C4/22; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS OF RECOVERING C5 AND C6 CYCLODIENE MONOMERS WHICH COMPRISES PREHEATING IN A CONTINUOUS STREAM A CRUDE CONDENSATE CONTAINING CYCLODIENE DIMERS, CODIMERS, TRIMERS AND COTRIMERS, BOILING IN THE RANGE OF ABOUT 135* TO 280*C. AND A MINOR AMOUNT OF HIGHER BOILING COMPONENTS BOILING ABOVE ABOUT 280*C., SAID HIGHER BOILING COMPONENTS CONTAINING CYCLODIENE TETRAMERS WHICH WHEN SUBJECTED TO VAPOR PHASE CRACKING FORM COKE, PREHEATING SAID CONDENSATE TO VAPORIZE THE DIMER CODIMER AND TRIMER COMPONENTS, BOILING UP TO ABOUT 280*C., MAINTAINING SAID HIGHER BOILING COMPONENTS INCLUDING THE CYCLODIENE TETRAMERS IN LIQUID PHASE, SEPARATING THE VAPORIZED COMPONENTS WHICH BOIL IN THE RANGE OF 135* TO 280*C. FROM THE LIQUID PHASE AND SUBJECTING TO VAPOR PHASE CRACKING SAID VAPORIZED COMPONENTS FREE OF COMPONENTS HIGHER BOILING THAN 280*C. INCLUDING CYCLODIENE TETRAMERS AT TEMPERATURES IN THE RANGE OF ABOUT 350* TO 450*C.
Claim 2
Dependent Claim
137 words
A PROCESS OF RECOVERING C5 AND C6 CYCLODIENE MONOMERS WHICH COMPRISES PREHEATING IN A CONTINUOUS STREAM A CRUDE CONDENSATE CONTAINING CYCLODIENE DIMERS, CODIMERS, TRIMERS AND COTRIMERS, BOILING IN THE RANGE OF ABOUT 135* TO 280*C. AND A MINOR AMOUNT OF HIGHER BOILING COMPONENTS BOILING ABOVE ABOUT 280*C., SAID HIGHER BOILING COMPONENTS CONTAINING CYCLODIENE TETRAMERS WHICH WHEN SUBJECTED TO VAPOR PHASE CRACKING FORM COKE, PREHEATING SAID CONDENSATE TO VAPORIZE THE DIMER CODIMER AND TRIMER COMPONENTS, BOILING UP TO ABOUT 280*C., MAINTAINING SAID HIGHER BOILING COMPONENTS INCLUDING THE CYCLODIENE TETRAMERS IN LIQUID PHASE, SEPARATING THE VAPORIZED COMPONENTS WHICH BOIL IN THE RANGE OF 135* TO 280*C. FROM THE LIQUID PHASE AND SUBJECTING TO VAPOR PHASE CRACKING SAID VAPORIZED COMPONENTS FREE OF COMPONENTS HIGHER BOILING THAN 280*C. INCLUDING CYCLODIENE TETRAMERS AT TEMPERATURES IN THE RANGE OF ABOUT 350* TO 450*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |