US3926871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizates of olefinic nitriles
Assignee: Standard Oil Co
•
Filing: 1974-11-20
•
Granted: 1975-12-16
•
Expires: 1994-11-20
Abstract
Abstract Polymer resins which are high softening and function as gas and vapor barrier materials are composed of an olefinically unsaturated nitrile, such as acrylonitrile, an ester of an olefinically unsaturated carboxylic acid, such as methyl acrylate, and indene.
Inventors
- 👤 Linda W Hensley
- 👤 George S Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:10
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
24 words
THE TERPOLYMER COMPOSITION RESULTING FROM THE COPOLYMERIZATION OF A. FROM ABOUT 60 TO 90% BY WEIGHT OF AT LEAST ONE NITRILE HAVING THE STRUCTURE
Claim 2
Dependent Claim
24 words
THE TERPOLYMER COMPOSITION RESULTING FROM THE COPOLYMERIZATION OF A. FROM ABOUT 60 TO 90% BY WEIGHT OF AT LEAST ONE NITRILE HAVING THE STRUCTURE
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein (A) is acrylonitrile.
Claim 4
Dependent Claim
10 words
The composition of claim 2 wherein (B) is methyl acrylate.
Claim 5
Dependent Claim
9 words
The composition of claim 3 wherein (C) is indene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |