Patent US3251772A successfully refreshed from Google Patents.
US3251772A
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Lubricating composition containing cross-linked polymer
Assignee: Sika Schweiz AG
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Filing: 1962-01-30
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Granted: 1966-05-17
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Expires: 1982-01-30
Abstract
No abstract record available.
Inventors
- 👤 Schreiber Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/065; C10M2201/066; C10M2203/00; C10M2203/10; C10M2203/104; C10M2203/106; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/04; C10M2205/06; C10M2205/14; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/06; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
93 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A LUBRICANT BASE COMPOSITION AND A TRIDEMENSIONALLY SWELLABLE MACROMOLECULAR SUBSTANCE CROSS-LINKED TO SUCH EXTENT THAT THE MAXIMUM DEGREE OF WELLING OF SAID MACROMOLECULAR SUBSTANCE IN THE BASE COMPOSITION AT ROOM TEMPERATURE IS AT LEAST ABOUT 1, SAID MACROMOLECULAR SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE AND POLY-NONYL-METHACRYLATE AND BEING PRESENT IN THE FORM OF PARTICLES HAVING AN AVERAGE PARTICLE SIZE OF LESS THAN ABOUT 0.1 MM., THE MACROMOLECULAR SUBSTANCE BEING PRESENT IN THE BASE COMPOSITION IN AN AMOUNT BETWEEN 2 AND 50% BY WEIGHT.
Claim 2
Dependent Claim
93 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A LUBRICANT BASE COMPOSITION AND A TRIDEMENSIONALLY SWELLABLE MACROMOLECULAR SUBSTANCE CROSS-LINKED TO SUCH EXTENT THAT THE MAXIMUM DEGREE OF WELLING OF SAID MACROMOLECULAR SUBSTANCE IN THE BASE COMPOSITION AT ROOM TEMPERATURE IS AT LEAST ABOUT 1, SAID MACROMOLECULAR SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE AND POLY-NONYL-METHACRYLATE AND BEING PRESENT IN THE FORM OF PARTICLES HAVING AN AVERAGE PARTICLE SIZE OF LESS THAN ABOUT 0.1 MM., THE MACROMOLECULAR SUBSTANCE BEING PRESENT IN THE BASE COMPOSITION IN AN AMOUNT BETWEEN 2 AND 50% BY WEIGHT.
Claim 3
Dependent Claim
38 words
A COMPOSITION AS CLAIMED IN CLAIM 1 WHEREIN SAID LUBRICANT BASE COMPOSITION IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC OILS AND FATS, ESTERS OF FATTY ACIDS AND POLY CARBOXYLIC AIDS, POLYETHERS AND SILICONE OILS.
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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |