US3349024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maintaining pressure in a hydrocarbon thermalcracking zone
Assignee: Phillips Petroleum Co
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Filing: 1964-11-17
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Granted: 1967-10-24
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Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Luther F Mayhue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:11
CPC Classifications
C; C10; C10G; C10G9/00; B; B01; B01J; B01J12/00; B01J12/005; B01J19/00; B01J19/24; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00092; B01J2219/00157; B01J2219/00159; B01J2219/00162; B01J2219/00191; B01J2219/00193; B01J2219/00195; B01J2219/00202; B01J2219/00222; B01J2219/00227; B01J2219/00238; Y; Y10; Y10S; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
IN A CONTINUOUS CRACKING PROCESS WHEREIN A PARAFFIN IS CRACKED TO AN OLEFIN IN A TUBE REACTOR AND WHEREIN THE COKE BUILD-UP IN THE TUBES OF SIA REACTOR CAUSES A DECREASE IN THE PRESSURE OF THE EFFLUENT FROM SAID REACTOR, THE IMPROVEMENT WHICH COMPRISES FEEDING PARAFFIN FROM A LIQUID STORAGE ZONE FRM WHICH IT IS VAPORIZED, SENSING THE PRESSURE OF SAID EFFLUENT FROM SAID REACTOR, AND ADJUSTING THE HEAT SUPPLY TO SAID LIQUID STORAGE ZONE TO VAPORIZE AND PARAFFIN IN ACCORDANCE WITH SAID SENSED PRESSURE OF SAID REACTOR ELLLUENT TO MAINTAIN A PREDETERMINED PRESSURE OF SAID EFFLUENT.
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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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |