US3784491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of vinyl monomers using coacervate stabilizing agents containing gelatin
Assignee: Wilson and Co Inc
•
Filing: 1971-05-27
•
Granted: 1974-01-08
•
Expires: 1991-05-27
Abstract
Abstract SINGINIFICANT IMPROVEMENTS IN THE PROCESS AND PRODUCT ARE ACHIEVED USING A DISPERSION POLYMERIZATION METHOD COMPRISING POLYMERIZING A VINYL MONOMER IN AN AQUEOUS MEDIUM TOGETHER WITH A COACERVATE OF A WATER-SOLUBLE POSITIVELY-CHARGED, PROTEINACEOUS COLLOID AND AT LEAST ONE NEGATIVELY-CHARGED, WATER-SOLUBLE COLLOID AS A SABILIZING AGENT.
Inventors
- 👤 R Pozorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:44
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18; C08F2/20
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |