US2928806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of organic silicon compounds and acrylonitrile
Assignee: Union Carbide Corp
•
Filing: 1956-03-27
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Granted: 1960-03-15
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Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Donald L Bailey
- 👤 Ronald M Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:23
CPC Classifications
C; C08; C08F; C08F230/00; C08F230/04; C08F230/08; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COPOLYMER OF ACRYLONITRILE AND A MONO-VINYL SILOXANE, SAID SILOXANE HAVING THE GRAPHICAL FORMULA:
Claim 2
Dependent Claim
14 words
A COPOLYMER OF ACRYLONITRILE AND A MONO-VINYL SILOXANE, SAID SILOXANE HAVING THE GRAPHICAL 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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |