Patent US2890171A successfully refreshed from Google Patents.
US2890171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme high temperature grease compositions gelled with thermosetting resin-coated gels
Assignee: Shell Development Co
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Filing: 1955-02-25
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Granted: 1959-06-09
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Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
- 👤 Jack W Armstrong
- 👤 John A Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:00
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/14; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2211/00; C10M2211/02; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/06; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A LUBRICATING GREASE COMPOSITION CONSISTNG ESSENTALLY OF A LIQUID ORGANO-SILCONE POLYMER THE ORGANO RADICALS OF WHICH ARE SELECTED FROM THE GROUP CONSISTING OF C1-3 ALKYL AND C1-3 OXYALKYL RADICALS, SAID POLYMER BEING OF LUBRICATING OIL VISCOSITY THICKNENED TO A GREASE CONSISTENCY WITH FROM ABOUT 1% TO ABOUT 20% BY WEIGHT OF A COLLOIDALLY DISPERED CLAY, THE SURFACES OF SAID CLAY BEARING FROM ABOUT 1% TO ABOUT 20%, BASED ON THE WEIGHT OF THE CLAY, OF A THERMALLY RESINIFIED THERMOSETTING RESIN OF THE GROUP CONSISTING OF PHENOPLASTS FORMED BETWEEN AN ALDEHYDE AND A PHENOL IN A PHENOL:ALDEHYDE MOLAR RATIO BETWEEN 1:1 AND 1:1.5 AND AMINOPLASTS FORMED BETWEEN AN AMINE AND AN ALDEHYDE IN AN AMINE:ALDEHYDE MOLAR RATIO BETWEEN 1:1.5 AND 1:6, THE SOLVENT-SOLUBLE RESIN BEING MIXED WITH THE CLAY AND OIL AND THEREAFTER HEATED IN THE PRESENCE THEREOF TO FORM THE SOLVENTINSOLUBLE RESIN.
Claim 2
Dependent Claim
142 words
A LUBRICATING GREASE COMPOSITION CONSISTNG ESSENTALLY OF A LIQUID ORGANO-SILCONE POLYMER THE ORGANO RADICALS OF WHICH ARE SELECTED FROM THE GROUP CONSISTING OF C1-3 ALKYL AND C1-3 OXYALKYL RADICALS, SAID POLYMER BEING OF LUBRICATING OIL VISCOSITY THICKNENED TO A GREASE CONSISTENCY WITH FROM ABOUT 1% TO ABOUT 20% BY WEIGHT OF A COLLOIDALLY DISPERED CLAY, THE SURFACES OF SAID CLAY BEARING FROM ABOUT 1% TO ABOUT 20%, BASED ON THE WEIGHT OF THE CLAY, OF A THERMALLY RESINIFIED THERMOSETTING RESIN OF THE GROUP CONSISTING OF PHENOPLASTS FORMED BETWEEN AN ALDEHYDE AND A PHENOL IN A PHENOL:ALDEHYDE MOLAR RATIO BETWEEN 1:1 AND 1:1.5 AND AMINOPLASTS FORMED BETWEEN AN AMINE AND AN ALDEHYDE IN AN AMINE:ALDEHYDE MOLAR RATIO BETWEEN 1:1.5 AND 1:6, THE SOLVENT-SOLUBLE RESIN BEING MIXED WITH THE CLAY AND OIL AND THEREAFTER HEATED IN THE PRESENCE THEREOF TO FORM THE SOLVENTINSOLUBLE RESIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |