US2651626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl halide-vinylidene halideacrylic ester tripolymers
Assignee: Shell Development Co
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Filing: 1947-07-14
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Granted: 1953-09-08
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Expires: 1967-07-14
Abstract
No abstract record available.
Inventors
- 👤 Nie Willem Leendert Johanne De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:04
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/06; C08F214/08; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS COMPRISING HEATING 95% TO 80% BY WEIGHT OF A MIXTURE OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE AND 5% TO 20% BY WEIGHT OF METHYL METHACRYLATE IN AN AQUEOUS EMULSION IN THE PRESENCE OF A PEROXIDE CATALYST AT A TEMPERATURE BETWEEN 15.C. AND 100 C. THE RATIO OF THE VINYL CHLORIDE TO VINYLIDENE CHLORIDE IN THE SAID MIXTURE BEING BETWEEN 5:95 AND 95:5.
Claim 2
Dependent Claim
64 words
A PROCESS COMPRISING HEATING 95% TO 80% BY WEIGHT OF A MIXTURE OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE AND 5% TO 20% BY WEIGHT OF METHYL METHACRYLATE IN AN AQUEOUS EMULSION IN THE PRESENCE OF A PEROXIDE CATALYST AT A TEMPERATURE BETWEEN 15.C. AND 100 C. THE RATIO OF THE VINYL CHLORIDE TO VINYLIDENE CHLORIDE IN THE SAID MIXTURE BEING BETWEEN 5:95 AND 95:5.
References Cited (Backward Citations)
US2278415A
Cited
US2404781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |