US2677679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium polymers of the acrylic type
Assignee: EIDP Inc
•
Filing: 1951-03-21
•
Granted: 1954-05-04
•
Expires: 1971-03-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:45
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A PROCESS FOR THE PREPARATION OF POLYMERS WHEREIN A MONOMER COMPOSITION CONSISTING OF MONOMERS HAVING A NON-AROMATIC CARBON-CARBON UNSATURATION AND THAT ETHYLENIC AT LEAST 0.1% OF WHICH IS A METHACRYLOXYALKYLTRIALKYLAMMONIUM SALT IS BROUGHT INTO CONTACT WITH A FREE RADICAL TYPE POLYMERIZATION CATALYST IN UNIFORM DISPERSION IN A HYDROXYLATED SOLVENT FOR THE QUATERNARY AMMONIUM MONOMER.
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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |