Patent US2603666A successfully refreshed from Google Patents.
US2603666A
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Catalytic reaction of isobutane and propylene to produce lubricating oil
Assignee: Standard Oil Development Co
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Filing: 1950-09-21
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Granted: 1952-07-15
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Expires: 1970-09-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:03
CPC Classifications
C; C10; C10G; C10G50/00; C10G50/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF PREPARING A SYNTHETIC HHDROCARBON LUBRICAING OIL WHICH COMPRISES CONTINUOUSLY PASSING A MIXTURE OF 4 TO 6 MOLECULAR PROPORTIONS OF ISOBUTANE AND 1 MOLECULAR PROPORTION OF PROPYLENE THROUGH A REACTOR IN CONTACT WITH AN ALUMINUM CHLORIDE CATALYST AND SIMULTANEOUSLY AND CONTINUOUSLY RECYCLING A PORTION OF THE TOTAL NORMALLY LIQUID REACTION PRODUCT TO SAID REACTOR, THE VOLUME RATIO OF RECYCLED PRODUCT, EXCLUSIVE OF ANY UNREACTED ISOBUTANE, TO THE FRESH FEED MIXTURE ENTERING THE REACTOR BEING 4-6/1, WHILE MAINTAINING IN THE REACTOR A TEMPERATURE OF 60-90* F. AND A PRESSURE SUFFICIENT TO MAINTAIN A
Claim 2
Independent Claim
94 words
A METHOD OF PREPARING A SYNTHETIC HHDROCARBON LUBRICAING OIL WHICH COMPRISES CONTINUOUSLY PASSING A MIXTURE OF 4 TO 6 MOLECULAR PROPORTIONS OF ISOBUTANE AND 1 MOLECULAR PROPORTION OF PROPYLENE THROUGH A REACTOR IN CONTACT WITH AN ALUMINUM CHLORIDE CATALYST AND SIMULTANEOUSLY AND CONTINUOUSLY RECYCLING A PORTION OF THE TOTAL NORMALLY LIQUID REACTION PRODUCT TO SAID REACTOR, THE VOLUME RATIO OF RECYCLED PRODUCT, EXCLUSIVE OF ANY UNREACTED ISOBUTANE, TO THE FRESH FEED MIXTURE ENTERING THE REACTOR BEING 4-6/1, WHILE MAINTAINING IN THE REACTOR A TEMPERATURE OF 60-90* F. AND A PRESSURE SUFFICIENT TO MAINTAIN A
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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) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |