US3197409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylene glycol ester reaction product
Assignee: California Research LLC
•
Filing: 1963-03-28
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Granted: 1965-07-27
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Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Vries Louis De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:52
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/198; C10L1/1985; C08; C08F; C08F8/00; C08F8/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
AN OIL-SOUBLE POLYMERIC DISPERSANT CONSISTING OF THE ESTER OF AN ALKYLENE GLYCOL AND A SUCCINIC ANHYDRIDE SUBSTITUTED COPOLYMER OF (A) MONOMER UNITS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
26 words
AN OIL-SOUBLE POLYMERIC DISPERSANT CONSISTING OF THE ESTER OF AN ALKYLENE GLYCOL AND A SUCCINIC ANHYDRIDE SUBSTITUTED COPOLYMER OF (A) MONOMER UNITS HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
34 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL OF LUBRICATING VISCOSITY AND A MINOR PROPORTION SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF THE POLYALKYLENE GLYCOL ESTER REACTION PRODUCT 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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |