US2500164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricant
Assignee: ExxonMobil Oil Corp
•
Filing: 1948-12-02
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Granted: 1950-03-14
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Expires: 1968-12-02
Abstract
No abstract record available.
Inventors
- 👤 William E Garwood
- 👤 Francis M Seger
- 👤 Alexander N Sachanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:34
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2527/00; C07C2527/02; C07C2527/057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF PREPARATION OF A VISCOUS OIL, WHICH COMPRISES: POLYMERIZING, AT A TEMPERATURE BETWEEN ABOUT 550*F. AND ABOUT 750*F., FOR A PERIOD OF TIME FROM ABOUT TWENTY HOURS TO ABOUT ONE HOUR, RESPECTIVELY, A NORMAL, ALPHA MONOOLEFIN HAVING FROM ABOUT 6 TO ABOUT 14 CARBON ATOMS, IN THE PRESENACE OF AN ELEMENTAL SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULFUR, SELENIUM AND TELLURIUM, THE MOLAR RATIO OF SAID SUBSTANCE TO SAID OLEFIN BEING FROM ABOUT 0.01 TO ABOUT 0.15.
Claim 2
Independent Claim
80 words
THE METHOD OF PREPARATION OF A VISCOUS OIL, WHICH COMPRISES: POLYMERIZING, AT A TEMPERATURE BETWEEN ABOUT 550*F. AND ABOUT 750*F., FOR A PERIOD OF TIME FROM ABOUT TWENTY HOURS TO ABOUT ONE HOUR, RESPECTIVELY, A NORMAL, ALPHA MONOOLEFIN HAVING FROM ABOUT 6 TO ABOUT 14 CARBON ATOMS, IN THE PRESENACE OF AN ELEMENTAL SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULFUR, SELENIUM AND TELLURIUM, THE MOLAR RATIO OF SAID SUBSTANCE TO SAID OLEFIN BEING FROM ABOUT 0.01 TO ABOUT 0.15.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |