Patent US3354087A successfully refreshed from Google Patents.
US3354087A
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Mineral lubricating oil containing acrylate thio polymer as viscosity index improver
Assignee: Union Carbide Corp
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Filing: 1966-07-19
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Granted: 1967-11-21
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Expires: 1986-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick E Bailey
- 👤 Combe Edward M La
- 👤 Russell H Raines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:21
CPC Classifications
C; C10; C10M; C10M151/00; C10M151/02; C07; C07C; C07C317/00; C07C317/16; C07C317/18; C07C323/00; C07C323/10; C07C323/11; C07C323/12; C08; C08F; C08F28/00; C10M2221/00; C10M2221/02; C10N; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A LUBRICATING COMPOSITION COMPRISING A MINERAL OIL OF LUBRICATING VISCOSITY AND A SMALL AMOUNT, SUFFICIENT TO ENHANCE THE VISXODITY INDEX OF SAID MINERAL OIL, OF A RESINOUS COPOLYMER OF: (A) FROM ABOUT 2 TO ABOUT 20 WEIGHT PERCENT OF A COMPOUND REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
45 words
A LUBRICATING COMPOSITION COMPRISING A MINERAL OIL OF LUBRICATING VISCOSITY AND A SMALL AMOUNT, SUFFICIENT TO ENHANCE THE VISXODITY INDEX OF SAID MINERAL OIL, OF A RESINOUS COPOLYMER OF: (A) FROM ABOUT 2 TO ABOUT 20 WEIGHT PERCENT OF A COMPOUND REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
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US2925406A
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US3102863A
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US3100748A
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US3265673A
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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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |