US2732350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyelectrolytes comprising copoly-
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:24
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THE METHOD OF PREPARING POLYELECTROLYTES COMPRISING POLYMERIZING AN N-ALKYL VINYL PYRIDINIUM SALT WITH AN AROMATIC VINYL HYDROCARBON IN THE RATIO OF ABOUT ONE MOL OF PYRIDINIUM SALT TO EACH VINYL EQUIVALENT OF AROMATIC HYDROCARBON.
Claim 2
Independent Claim
34 words
THE METHOD OF PREPARING POLYELECTROLYTES COMPRISING POLYMERIZING AN N-ALKYL VINYL PYRIDINIUM SALT WITH AN AROMATIC VINYL HYDROCARBON IN THE RATIO OF ABOUT ONE MOL OF PYRIDINIUM SALT TO EACH VINYL EQUIVALENT OF AROMATIC HYDROCARBON.
References Cited (Backward Citations)
US2484420A
Cited
US2540985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |