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Patent US3374170A successfully refreshed from Google Patents.
US3374170A
Expired / Lapsed
US
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Grease composition
Assignee: Gulf Research and Development Co
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Filing: 1966-04-04
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Granted: 1968-03-19
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 John F Hedenburg
- 👤 Chester S Tempalski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:20
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/02; C10M2201/00; C10M2201/10; C10M2201/105; C10M2205/00; C10M2215/00; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/221; C10M2215/222; C10M2229/00; C10M2229/04; C10M2229/043; C10M2229/044; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A LUBRICATING COMPOSITION COMPRISING A LIQUID POLYORGANO SILOXANE THICKENED TO A GREASE CONSISTENCY WITH ABOUT 10 TO ABOUT 25 PERCENT BY WEIGHT OF A POLYARYL UREA WHICH PRIOR TO BEING INCORPORATED INTO THE POLYORGANO SILOXANE HAS BEEN HEATED TO A TEMPERATURE OF ABOUT 450* TO ABOUT 600*F. FOR A TIME SUFFICIENT TO REDUCE THE WEIGHT OF THE POLYARYL UREA BY ABOUT 20 TO ABOUT 40 PERCENT, SAID POLYARYL UREA BEING THE REACTION PRODUCT OF AN ARYL ISOCYANATE HAVING THE FORMULA:
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |