Patent US2581092A successfully refreshed from Google Patents.
US2581092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin-diolefin copolymers and mercaptan adducts
Assignee: Standard Oil Development Co
•
Filing: 1948-01-02
•
Granted: 1952-01-01
•
Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
- 👤 John D Garber
- 👤 Jr William C Hollyday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:06
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/12; C10M2221/00; C10M2221/04; C10M2221/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PRODUCT CONSISTING ESSENTIALLY OF AN OIL SOLUBLE CONDENSATION PRODUCT OF A COPOLYMER OF ABOUT TWO PARTS BY WEIGHT OF OCTADECENE AND ABOUT ONE PART BY WEIGHT OF BUTADIENE CONDENSED WITH AN EXCESS OF TETRADECYL MERCAPTAN, SAID COPOLYMER BEING FORMED BY SUBJECTING THE OCTADECENE AND THE BUTADIENE TO A TEMPERATURE WITHIN A RANGE OF FROM 32* F. TO 45* F. IN THE PRESENCE OF A FRIEDEL-CRAFT CATALYST.
Claim 2
Dependent Claim
67 words
A PRODUCT CONSISTING ESSENTIALLY OF AN OIL SOLUBLE CONDENSATION PRODUCT OF A COPOLYMER OF ABOUT TWO PARTS BY WEIGHT OF OCTADECENE AND ABOUT ONE PART BY WEIGHT OF BUTADIENE CONDENSED WITH AN EXCESS OF TETRADECYL MERCAPTAN, SAID COPOLYMER BEING FORMED BY SUBJECTING THE OCTADECENE AND THE BUTADIENE TO A TEMPERATURE WITHIN A RANGE OF FROM 32* F. TO 45* F. IN THE PRESENCE OF A FRIEDEL-CRAFT CATALYST.
References Cited (Backward Citations)
US2051807A
Cited
US2352435A
Cited
US2230966A
Cited
US2346153A
Cited
US2366453A
Cited
US2481257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |