Patent US3209725A successfully refreshed from Google Patents.
Patent US3420195A successfully refreshed from Google Patents.
Patent US3265673A successfully refreshed from Google Patents.
US3265673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of long-chained acrylic esters with sulfur containing acrylates
Assignee: Shell USA Inc
•
Filing: 1962-12-28
•
Granted: 1966-08-09
•
Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harry F Richards
- 👤 Jr Stephen A Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:03
CPC Classifications
C; C10; C10M; C10M151/00; C10M151/02; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812; C08F220/1818; C08F28/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/047; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A NEW OIL-SOLUBLE COPOLYMER USEFUL AS A MINERAL LUBRICATING OIL ADDITIVE, SAID COPOLYMER BEING A COPOLYMER OF AN ACRYLATE ESTER OF AN ACRYLIC ACID AND A C3-C18 ALKANOL AND A SULFUR-CONTAINING ACRYLATE ESTER HAVING THE FORMULA
Claim 2
Dependent Claim
36 words
A NEW OIL-SOLUBLE COPOLYMER USEFUL AS A MINERAL LUBRICATING OIL ADDITIVE, SAID COPOLYMER BEING A COPOLYMER OF AN ACRYLATE ESTER OF AN ACRYLIC ACID AND A C3-C18 ALKANOL AND A SULFUR-CONTAINING ACRYLATE ESTER HAVING THE FORMULA
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |