US3027415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated hydrocarbons
Assignee: —
•
Filing: —
•
Granted: 1962-03-27
•
Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C10; C10G; C10G2400/00; C10G2400/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN A METHOD OF PRODUCING UNSATURATED GASEOUS HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE AND BUTYLENE BY CRACKING LIQUID HYDROCARBONS AT TEMPERATURES OF 650* TO 850*C. IN A FLUIDIZED LAYER OF OIL COKE FORMED IN THE CRACKING WITH THE ADDITION OF 25 TO 100% BY WEIGHT OF WATER VAPOR, THE IMPROVEMENT WHICH COMPRISES ADDING A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, BERYLLIUM, CALCIUM AND MAGNESIUM IN SOLID FORM IN AN AMOUNT, CALCULATED AS ELEMENTS SUCH THAT DURING THE PROCESS 0.1 TO 0.5% BY WEIGHT OF SAID COMPOUND WITH REFERENCE TO THE WEIGHT OF THE OIL COKE ARE PRESENT IN THE FLUIDIZED LAYER.
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |