US3046226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil compositions
Assignee: 3M Co
•
Filing: 1958-02-19
•
Granted: 1962-07-24
•
Expires: 1978-02-19
Abstract
No abstract record available.
Inventors
- 👤 Carl L Sandberg
- 👤 Paul I Roth
- 👤 Joan M Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:50
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A LUBRICATING OIL CONTAINING FROM ABOUT 0.1 TO ABOUT 10% BY WEIGHT OF A COPOLYMER OF MONOMERIC ESTERS OF POLYMERIZABLE ETHYLENE CARBOXYLIC ACIDS SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACID, (1) ONE OF SAID ACIDS BEING ESTERIFIED WITH A SATURATED PRIMARY MONOHYDRIC ALCOHOL HAVING FROM ABOUT 1 TO ABOUT 6 CARBON ATOMS,AND NO MORE THAN ONE OTHER ATOM IN THE SKELETAL STRUCTURE THEREOF, SAID OTHER ATOM WHEN PRESENT BEING OXYGEN AND FORMING AN ETHER LINKAGE WITH ADJACENT CARBONS, (2) THE OTHER OF SAID ACIDS BEING ESTERIFIED WITH AN ALKYL-PHENYL-ETHER SUBSTITUTED ETHYLENE GLYCOL HAVING LESS THAN FOUR ETHYLENE OXY UNITS IN THE GLYCOL CHAIN, THE ALKYL SUBSTITUENT OF SAID ALKYL-PHENYL-ETHER GROUP COMPRISING FROM ABOUT 9 TO ABOUT 18 CARBON ATOMS, SAID COPOLYMER COMPRISING BETWEEN ABOUT 20 AND ABOUT 90 MOL PERCENT (2) AND HAVING A TERMINAL ALKYL GROUP IN THE SIDE CHAIN THEREOF HAVING AN AVERAGE CHAIN LENGTH OF ABOUT 6.5-10.0 CARBON ATOMS.
Claim 2
Dependent Claim
155 words
A LUBRICATING OIL CONTAINING FROM ABOUT 0.1 TO ABOUT 10% BY WEIGHT OF A COPOLYMER OF MONOMERIC ESTERS OF POLYMERIZABLE ETHYLENE CARBOXYLIC ACIDS SELECTED FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACID, (1) ONE OF SAID ACIDS BEING ESTERIFIED WITH A SATURATED PRIMARY MONOHYDRIC ALCOHOL HAVING FROM ABOUT 1 TO ABOUT 6 CARBON ATOMS,AND NO MORE THAN ONE OTHER ATOM IN THE SKELETAL STRUCTURE THEREOF, SAID OTHER ATOM WHEN PRESENT BEING OXYGEN AND FORMING AN ETHER LINKAGE WITH ADJACENT CARBONS, (2) THE OTHER OF SAID ACIDS BEING ESTERIFIED WITH AN ALKYL-PHENYL-ETHER SUBSTITUTED ETHYLENE GLYCOL HAVING LESS THAN FOUR ETHYLENE OXY UNITS IN THE GLYCOL CHAIN, THE ALKYL SUBSTITUENT OF SAID ALKYL-PHENYL-ETHER GROUP COMPRISING FROM ABOUT 9 TO ABOUT 18 CARBON ATOMS, SAID COPOLYMER COMPRISING BETWEEN ABOUT 20 AND ABOUT 90 MOL PERCENT (2) AND HAVING A TERMINAL ALKYL GROUP IN THE SIDE CHAIN THEREOF HAVING AN AVERAGE CHAIN LENGTH OF ABOUT 6.5-10.0 CARBON ATOMS.
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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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |