US2706168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of magnesia-calcium oxide silica composites and cracking process
Assignee: Gulf Research and Development Co
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Filing: 1950-07-20
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Granted: 1955-04-12
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Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 William A Pardee
- 👤 Jr George E Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS COMPRISING SUBJECTING A CALCINED MAGNESIA-CALCIUM OXIDE-SILICA COMPOSITE CONTAINING ABOUT 1 TO 18 PER CENT CALCIUM OXIDE BY WEIGHT TO THE ACTION OF SATURATED STREAM AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 250* TO ABOUT 600* F., SAID TEMPERATURE BEING WITHIN THE LOW PART OF SAID RANGE FOR A LOW CALCIUM OXIDE CONTENT COMPOSITE AND WITHIN THE HIGH PART OF SAID RANGE FOR A HIGH, CALCIUM OXIDE CONTENT COMPOSITE AND THEN CALCINING THE STEAMED COMPOSITE.
Claim 2
Dependent Claim
46 words
A PROCESS COMPRISING CONTACTING A HIGH MOLECULAR WEIGHT HYDROCARBON UNDER CATALYTIC CRACKING CONDITIONS INCLUDING A TEMPERATURE OF ABOUT 700* TO ABOUT 1100* F. WITH A MAGNESIA-CALCIUM OXIDE-SILICA COMPOSITE TREATED AS DESCRIBED IN CLAIM 3 TO CONVERT SAID HIGH MOLECULAR WEIGHT HYDROCARBON TO LOWER MOLECULAR WEIGHT HYDROCARBONS.
References Cited (Backward Citations)
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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) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |