US3247116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants containing degraded polytetrafluoroethylene
Assignee: Flowserve Corp
•
Filing: 1961-11-07
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Granted: 1966-04-19
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Victor G Reiling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/50; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/05; C10M2201/06; C10M2201/061; C10M2201/10; C10M2201/102; C10M2201/12; C10M2201/16; C10M2201/18; C10M2203/00; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/18; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A COMPOSITION OF MATTER COMPRISING A SUSPENSION OF FINELY DIVIDED DEGRADED POLYTETRAFLUOROETHYLENE RESIN PARTICLES AND A LIQUID CARRIER THEREFOR, SAID RESIN PARTICLES BEING PRESENT IN AN AMOUNT OF ABOUT 10% TO 50% BY WEIGHT OF SAID CARRIER AND BEING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN, SAID PARTICLES BEING FORMED BY HEATING A POLYTETRAFLUOROETHYLENE RESIN AT A TEMPERATURE ABOVE ABOUT 785*F. FOR A PERIOD OF TIME SUFFICIENT TO EFFECT PERMANENT REDUCTION OF THE TENSILE STRENGTH OF THE DEGRADED PRODUCT SUBSTANTIALLY BELOW THE TENSILE STRENGTH OF SAID POLYTETRAFLUOROETHYLENE.
Claim 2
Dependent Claim
84 words
A COMPOSITION OF MATTER COMPRISING A SUSPENSION OF FINELY DIVIDED DEGRADED POLYTETRAFLUOROETHYLENE RESIN PARTICLES AND A LIQUID CARRIER THEREFOR, SAID RESIN PARTICLES BEING PRESENT IN AN AMOUNT OF ABOUT 10% TO 50% BY WEIGHT OF SAID CARRIER AND BEING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN, SAID PARTICLES BEING FORMED BY HEATING A POLYTETRAFLUOROETHYLENE RESIN AT A TEMPERATURE ABOVE ABOUT 785*F. FOR A PERIOD OF TIME SUFFICIENT TO EFFECT PERMANENT REDUCTION OF THE TENSILE STRENGTH OF THE DEGRADED PRODUCT SUBSTANTIALLY BELOW THE TENSILE STRENGTH OF SAID POLYTETRAFLUOROETHYLENE.
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |