US2957847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of styrene/acrylonitrile copolymers with ethylene/vinylene carbonate copolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-12-11
•
Granted: 1960-10-25
•
Expires: 1973-12-11
Abstract
No abstract record available.
Inventors
- 👤 Ival O Salyer
- 👤 James A Herbig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:23
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L23/00; C08L23/02; C08L23/04; C08L23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A BLEND OF A STYRENE/ACRYLONITRILE COPOLYMER WITH AN ETHYLENE/VINYLENE CARBONATE COPOLYMER.
Claim 2
Dependent Claim
11 words
A BLEND OF A STYRENE/ACRYLONITRILE COPOLYMER WITH AN ETHYLENE/VINYLENE CARBONATE COPOLYMER.
References Cited (Backward Citations)
US2563771A
Cited
US2646417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |