Patent US2609359A successfully refreshed from Google Patents.
US2609359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of a polyene, an alkene, and an olefinically unsaturated aromatic hydrocarbon
Assignee: Standard Oil Development Co
•
Filing: 1946-03-21
•
Granted: 1952-09-02
•
Expires: 1966-03-21
Abstract
No abstract record available.
Inventors
- 👤 William J Sparks
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:47
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
PRODUCT COMPRISING ESSENTIALLY A HIGH MOLECULAR WEIGHT TRIPOLYMER OF AT LEAST 80% BY WEIGHT OF AN ALKENE HAVING 3 TO 8 CARBON ATOMS, ABOUT .01 TO 5% OF A POLYMERIZABLE MONOOLEFINIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF UNALKYLATED AROMATIC HYDROCARBONS AND DERIVATIVES THEREOF CONTAINING AT LEAST ONE ALKYL GROUP OF 1 TO 10 CARBON ATOMS, AND ABOUT 0.1 TO 15% OF AN UNSATURATED ALIPHATIC SELECTED FROM THE GROUP CONSISTING OF A POLYENE OF 4 TO 15 CARBON ATOMS AND VINYL ACETYLENE, SAID TRIPOLYMER HAVING AN IODINE NUMBER OF ABOUT 0.1 TO 50 AND AN AVERAGE MOLECULAR WEIGHT OF AT LEAST ABOUT 18,000, BY THE STAUDINGER METHOD.
References Cited (Backward Citations)
GB513521A
Cited
US2213423A
Cited
US2274749A
Cited
US2373706A
Cited
US2368538A
Cited
US2479450A
Cited
US2446536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |