US3590102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymers of acrylonitrile onto polyvinylamide
Assignee: Bayer AG
•
Filing: 1968-03-01
•
Granted: 1971-06-29
•
Expires: 1988-03-01
Abstract
Abstract ACRYLONITRILE GRAFT POLYMERS CONTAINING AS A GRAFT BASIS A POLYVINYLAMIDE HAVING THE RECURRING STRUCTURAL UNIT -(CH2-CH(-NH-CO-R))N- WHEREIN R REPRESENTS A LOWER ALKYL RADICAL AND N IS A WHOLE NUMBER FROM 3 TO 300, AND GRAFTED THEREON A VINYL MONOMER COMPOSITION, CONSISTING OF AT LEAST 85% BY WEIGHT OF ACRYLONITRILE AND OPTIONALLY AN ADDITIONAL COPOLYMERISABLE VINYL MONOMER.
Inventors
- 👤 Carlhans Suling
- 👤 Karl-Erwin Schnalke
- 👤 Dieter Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:19
CPC Classifications
C; C08; C08F; C08F271/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |