US2551638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lubricating oils by condensation of olefinic hydrocarbons
Assignee: ExxonMobil Oil Corp
•
Filing: 1946-06-01
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Granted: 1951-05-08
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Expires: 1966-06-01
Abstract
No abstract record available.
Inventors
- 👤 Francis M Seger
- 👤 Alexander N Sachanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:43
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/02; C10M107/10; C08; C08F; C08F10/00; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2209/00; C10M2209/02; C10M2209/10; C10M2221/00; C10M2221/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS FOR MANUFACTURING A SYNTHETIC LUBRICATING OIL HAVING A LOW POUR POINT, A HIGH VISCOSITY INDEX AND HIGH STABILITY, WHICH COMPRISES CONTACTING, IN A REACTION ZONE AT A TEMPERATURE FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 50* C. AND ABOUT 300* C., A CHARGE CONSISTING ESSENTIALLY OF NORMAL-ALPHA-MONOOLEFINIC HYDROCARBONS HAVING BETWEEN-ALPHA-MONOOLEFINIC HYDROTWELVE CARBON ATOMS PER MOLECULE, WITH AN ORGANIC PEROXIDE IN AMOUNTS OF AT LEAST ABOUT 0.02 MOLE PER MOLE OF SAID NORMAL-ALPHA-MONOOLEFINIC HYDROCARBONS, AND FOR A PERIOD OF TIME SUFFICIENT TO EFFECT CONDENSATION.
Claim 2
Dependent Claim
85 words
THE PROCESS FOR MANUFACTURING A SYNTHETIC LUBRICATING OIL HAVING A LOW POUR POINT, A HIGH VISCOSITY INDEX AND HIGH STABILITY, WHICH COMPRISES CONTACTING, IN A REACTION ZONE AT A TEMPERATURE FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 50* C. AND ABOUT 300* C., A CHARGE CONSISTING ESSENTIALLY OF NORMAL-ALPHA-MONOOLEFINIC HYDROCARBONS HAVING BETWEEN-ALPHA-MONOOLEFINIC HYDROTWELVE CARBON ATOMS PER MOLECULE, WITH AN ORGANIC PEROXIDE IN AMOUNTS OF AT LEAST ABOUT 0.02 MOLE PER MOLE OF SAID NORMAL-ALPHA-MONOOLEFINIC HYDROCARBONS, AND FOR A PERIOD OF TIME SUFFICIENT TO EFFECT CONDENSATION.
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |