Patent US2820012A successfully refreshed from Google Patents.
US2820012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature phthalamate grease compositions
Assignee: California Research LLC
•
Filing: 1954-12-14
•
Granted: 1958-01-14
•
Expires: 1974-12-14
Abstract
No abstract record available.
Inventors
- 👤 Bruce W Hotten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:46
CPC Classifications
C; C10; C10M; C10M5/00; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/08; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/12; C10M2215/122; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL OF LUBRICATING VISCOSITY, AND, IN AN AMOUNT SUFFICIENT TO THICKEN SAID LUBRICATING OIL TO THE CONSISTENCY OF A GREASE, A METAL SALT OF AN N-ORGANO PHTHALAMIC ACID HAVING AT LEAST ONE CARBON ATOM OF THE BENZENE NUCLEUS BETWEEN THE BENZENE CARBON ATOM TO WHICH THE AMIDO RADICAL IS ATTACHED AND THE BENZENE CARBON ATOM TO WHICH THE CARBOXYL RADICAL OF SAID PHTHALAMIC ACID IS ATTACHED, AND WHEREIN SAID ORGANO GROUP IS SELECTED FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN, BRANCHED CHAIN, SATURATED AND UNSATURATED HYDROCARBON RADICALS CONTAINING FROM 1 TO 22 CARBON ATOMS, AND CYCLIC SATURATED AND UNSATURATED HYDROCARBON RADICALS CONTAINING FROM 6 TO 28 CARBON ATOMS, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS I AND II OF MENDELEEF''S PERIODIC TABLE.
Claim 2
Dependent Claim
135 words
A GREASE COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL OF LUBRICATING VISCOSITY, AND, IN AN AMOUNT SUFFICIENT TO THICKEN SAID LUBRICATING OIL TO THE CONSISTENCY OF A GREASE, A METAL SALT OF AN N-ORGANO PHTHALAMIC ACID HAVING AT LEAST ONE CARBON ATOM OF THE BENZENE NUCLEUS BETWEEN THE BENZENE CARBON ATOM TO WHICH THE AMIDO RADICAL IS ATTACHED AND THE BENZENE CARBON ATOM TO WHICH THE CARBOXYL RADICAL OF SAID PHTHALAMIC ACID IS ATTACHED, AND WHEREIN SAID ORGANO GROUP IS SELECTED FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN, BRANCHED CHAIN, SATURATED AND UNSATURATED HYDROCARBON RADICALS CONTAINING FROM 1 TO 22 CARBON ATOMS, AND CYCLIC SATURATED AND UNSATURATED HYDROCARBON RADICALS CONTAINING FROM 6 TO 28 CARBON ATOMS, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS I AND II OF MENDELEEF''S PERIODIC TABLE.
References Cited (Backward Citations)
US2275006A
Cited
US2378442A
Cited
US2378443A
Cited
US2408102A
Cited
US2408103A
Cited
US2556665A
Cited
US2604449A
Cited
US2578851A
Cited
US2640812A
Cited
US2756213A
Cited
US2699427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |