US3250715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymer product and lubricating composition containing it
Assignee: Lubrizol Corp
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Filing: 1964-02-04
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Granted: 1966-05-10
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Expires: 1984-02-04
Abstract
No abstract record available.
Inventors
- 👤 Donald P Wyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F16/00; C08F16/12; C08F218/00; C08F218/02; C08F218/04; C08F218/10; C08F222/00; C08F222/10; C08F222/12; C08F222/14; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
A TERPOLYMER HAVING A SPECIFIC VISCOSITY OF FROM ABOUT 0.090 TO 0.800 MEASURED IN A SOLUTION OF 5 GRAMS OF TERPOLYMER PER 100 MLS. OF BENZENE AT 30*C., PREPARED BY THE PROCESS OF POLYMERIZING AT A TEMPERATURE OF FROM ABOUT 25* TO 150*C., A MIXTURE OF (A) 1 MOLE OF A DIALKYL FUMARATE WHEREIN THE ALKYL RADICALS CONTAIN FROM ABOUT 10 TO 18 CARBON ATOMS, AND FROM ABOUT 0.5 TO 1 MOLE OF A MIXTURE OF (B) A VINYL ESTER OF A FATTY ACID HAVING FROM ABOUT 2 TO 10 CARBON ATOMS, AND (C) AN ALKYL VINYL ETHER WHEREIN THE ALKYL GROUP CONTAINS FROM ABOUT 1 TO 10 CARBON ATOMS, THE MOLE RATIO OF (B) TO (C) IN THE MIXTURE BEING WITHIN THE RANGE OF FROM ABOUT 9:1 TO 1:9.
Claim 2
Dependent Claim
130 words
A TERPOLYMER HAVING A SPECIFIC VISCOSITY OF FROM ABOUT 0.090 TO 0.800 MEASURED IN A SOLUTION OF 5 GRAMS OF TERPOLYMER PER 100 MLS. OF BENZENE AT 30*C., PREPARED BY THE PROCESS OF POLYMERIZING AT A TEMPERATURE OF FROM ABOUT 25* TO 150*C., A MIXTURE OF (A) 1 MOLE OF A DIALKYL FUMARATE WHEREIN THE ALKYL RADICALS CONTAIN FROM ABOUT 10 TO 18 CARBON ATOMS, AND FROM ABOUT 0.5 TO 1 MOLE OF A MIXTURE OF (B) A VINYL ESTER OF A FATTY ACID HAVING FROM ABOUT 2 TO 10 CARBON ATOMS, AND (C) AN ALKYL VINYL ETHER WHEREIN THE ALKYL GROUP CONTAINS FROM ABOUT 1 TO 10 CARBON ATOMS, THE MOLE RATIO OF (B) TO (C) IN THE MIXTURE BEING WITHIN THE RANGE OF FROM ABOUT 9:1 TO 1:9.
Claim 3
Dependent Claim
24 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND FROM ABOUT 0.01% TO ABOUT 15% OF THE TERPOLYMER OF CLAIM 1.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |