US3238116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke binder oil
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-12-12
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Granted: 1966-03-01
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Hamner Glen Porter
- 👤 Mason Ralph Burgess
- 👤 Metrailer William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:54
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR THE PRODUCTION OF PITCH FROM A FEEDSTOCK CHOSEN FROM THE GROUP CONSISTING OF COAL TAR AND PETROLEUM TAR WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH FROM TRACE AMOUNTS UP TO 1 WEIGHT PERCENT OF OXYGEN CONTAINED IN AN OXYGEN-CONTAINING GAS, INTRODUCING SAID OXYGEN-TREATED FEEDSTOCK TO A THERMAL SOAKING ZONE, SUBJECTING SAID FEEDSTOCK TO TEMPERATURES OF FROM 750 TO 950* F., AND PRESSURES OF FROM 100 TO 1000 P.S.I.G., IN SAID ZONE FOR A PERIOD OF FROM 0.5 TO 6 HOURS, THEREBY CONVERTING SAID FEEDSTOCK TO PITCH AND MORE VOLATILE PRODUCTS, WITHDRAWING SAID PITCH AND MORE VOLATILE PRODUCTS FROM SAID THERMAL SOAKING ZONE, STRIPPING THE PITCH OF SUBSTANTIALLY ALL THE MORE VOLATILE PRODUCTS, AND RECOVERING A FINAL PITCH PRODUCT CONTAINING LESS THAN 1 PERCENT OF OXYGEN.
Claim 2
Dependent Claim
127 words
A PROCESS FOR THE PRODUCTION OF PITCH FROM A FEEDSTOCK CHOSEN FROM THE GROUP CONSISTING OF COAL TAR AND PETROLEUM TAR WHICH COMPRISES CONTACTING SAID FEEDSTOCK WITH FROM TRACE AMOUNTS UP TO 1 WEIGHT PERCENT OF OXYGEN CONTAINED IN AN OXYGEN-CONTAINING GAS, INTRODUCING SAID OXYGEN-TREATED FEEDSTOCK TO A THERMAL SOAKING ZONE, SUBJECTING SAID FEEDSTOCK TO TEMPERATURES OF FROM 750 TO 950* F., AND PRESSURES OF FROM 100 TO 1000 P.S.I.G., IN SAID ZONE FOR A PERIOD OF FROM 0.5 TO 6 HOURS, THEREBY CONVERTING SAID FEEDSTOCK TO PITCH AND MORE VOLATILE PRODUCTS, WITHDRAWING SAID PITCH AND MORE VOLATILE PRODUCTS FROM SAID THERMAL SOAKING ZONE, STRIPPING THE PITCH OF SUBSTANTIALLY ALL THE MORE VOLATILE PRODUCTS, AND RECOVERING A FINAL PITCH PRODUCT CONTAINING LESS THAN 1 PERCENT OF OXYGEN.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |