Patent US2943109A successfully refreshed from Google Patents.
Patent US3121690A successfully refreshed from Google Patents.
US3121690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrogen-containing oxidized oil prod-
Assignee: —
•
Filing: —
•
Granted: 1964-02-18
•
Expires: 1981-02-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:48
CPC Classifications
C; C10; C10M; C10M125/00; C10M125/20; C10M2201/00; C10M2201/18; C10N; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AS A NEW COMPOSITION OF MATTER, A NITROGEN-CONTAINING OXIDIZED MINERAL OIL PRODUCT PRODUCED BY THE METHOD WHICH COMPRISES HEATING A MINERAL OIL TO A TEMPERATURE OF FROM ABOUT 200*F. TO ABOUT 500*F., SIMULTANEOUSLY INTRODUCING AIR AND AMMONIA GAS INTO THE HEATED OIL IN A VOLUME RATIO OF FROM ABOUT 1:1 TO ABOUT 20:1, FOR A TIME SUFFICIENT TO INCORPORATE INTO THE OIL FROM ABOUT 0.1% TO ABOUT 1.2%, BY WEIGHT, OF NITROGEN AND FILTERING THE TREATED OIL.
Claim 2
Dependent Claim
77 words
AS A NEW COMPOSITION OF MATTER, A NITROGEN-CONTAINING OXIDIZED MINERAL OIL PRODUCT PRODUCED BY THE METHOD WHICH COMPRISES HEATING A MINERAL OIL TO A TEMPERATURE OF FROM ABOUT 200*F. TO ABOUT 500*F., SIMULTANEOUSLY INTRODUCING AIR AND AMMONIA GAS INTO THE HEATED OIL IN A VOLUME RATIO OF FROM ABOUT 1:1 TO ABOUT 20:1, FOR A TIME SUFFICIENT TO INCORPORATE INTO THE OIL FROM ABOUT 0.1% TO ABOUT 1.2%, BY WEIGHT, OF NITROGEN AND FILTERING THE TREATED OIL.
References Cited (Backward Citations)
US2934487A
Cited
US2955084A
Cited
US1414227A
Cited
US2162454A
Cited
US2455670A
Cited
US2786803A
Cited
US2800450A
Cited
US2793943A
Cited
US2805998A
Cited
US2852355A
Cited
US2902354A
Cited
US2924572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |