Patent US3003937A successfully refreshed from Google Patents.
US3003937A
Expired / Lapsed
US
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Lubricants
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-07-25
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Granted: 1961-10-10
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Peter J Lucchesi
- 👤 Robert B Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:13
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; C08; C08F; C08F10/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/10; C10M2201/105; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/026; C10M2205/14; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL BASE STOCK AND IN THE RANGE OF ABOUT 0.1 TO ABOUT 4 WT. PERCENT OF AN ADDITIVE PREPARED BY IRRADIATING A PARAFFIN WAX FRACTION CONTAINING AT LEAST 80 WT. PERCENT OF PARAFFIN HYDROCARBONS HAVING FROM 21 TO 32 CARBON ATOMS WITH HIGH INTENSITY IONIZING RADIATION TO AN EXTENT THAT SAID FRACTION RECEIVES A DOSAGE ABOVE AT LEAST 10**4 ERGS/GM./SEC. FOR A TIME SUFFICIENT TO CONVERT AT LEAST 75 WEIGHT PERCENT OF SAID FRACTION TO AN OIL SOLUBLE RUBBERY ADDITIVE MATERIAL, SAID LUBRICATING OIL COMPOSITION HAVING A VISCOSITY IN THE RANGE OF 40 TO 300 S.S.U. AT 210*F., A BOILING POINT IN THE RANGE OF 700 TO 1200*F., A VISCOSITY INDEX ABOVE 100, AND A POUR POINT BELOW 10*F.
Claim 2
Dependent Claim
130 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL BASE STOCK AND IN THE RANGE OF ABOUT 0.1 TO ABOUT 4 WT. PERCENT OF AN ADDITIVE PREPARED BY IRRADIATING A PARAFFIN WAX FRACTION CONTAINING AT LEAST 80 WT. PERCENT OF PARAFFIN HYDROCARBONS HAVING FROM 21 TO 32 CARBON ATOMS WITH HIGH INTENSITY IONIZING RADIATION TO AN EXTENT THAT SAID FRACTION RECEIVES A DOSAGE ABOVE AT LEAST 10**4 ERGS/GM./SEC. FOR A TIME SUFFICIENT TO CONVERT AT LEAST 75 WEIGHT PERCENT OF SAID FRACTION TO AN OIL SOLUBLE RUBBERY ADDITIVE MATERIAL, SAID LUBRICATING OIL COMPOSITION HAVING A VISCOSITY IN THE RANGE OF 40 TO 300 S.S.U. AT 210*F., A BOILING POINT IN THE RANGE OF 700 TO 1200*F., A VISCOSITY INDEX ABOVE 100, AND A POUR POINT BELOW 10*F.
References Cited (Backward Citations)
US2743223A
Cited
US2771458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |