Patent US2662878A successfully refreshed from Google Patents.
US2662878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization control of vinyl acetate utilizing hydrogen peroxide
Assignee: EIDP Inc
•
Filing: 1951-07-05
•
Granted: 1953-12-15
•
Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Harold W Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:32
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
IN A PROCESS FOR POLYMERIZING VINYL ACETATE IN SOLUTION IN A NON-AQUEOUS SOLVENT, CONTAINING NOT MORE THAN 10% BY WEIGHT OF WATER, EMPLOYING AN ACYL PEROXIDE AS POLYMERIZATION CATALYST, THE STEP COMPRISING ADDING SUFFICIENT HYDROGEN PEROXIDE TO STOP THE POLYMERIZATION.
Claim 2
Dependent Claim
40 words
IN A PROCESS FOR POLYMERIZING VINYL ACETATE IN SOLUTION IN A NON-AQUEOUS SOLVENT, CONTAINING NOT MORE THAN 10% BY WEIGHT OF WATER, EMPLOYING AN ACYL PEROXIDE AS POLYMERIZATION CATALYST, THE STEP COMPRISING ADDING SUFFICIENT HYDROGEN PEROXIDE TO STOP THE POLYMERIZATION.
References Cited (Backward Citations)
US1586803A
Cited
US2497828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |