US3562238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension polymerization process for vinyl chloride polymers
Assignee: Goodrich Corp
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Filing: 1968-09-16
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Granted: 1971-02-09
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Expires: 1988-09-16
Abstract
Abstract IN THE SUSPENSION POLYMERIZATION OF VINYL CHLORIDE POLYMERS, UNDESIRABLE POLYMER BUILD-UP ON THE WALLS OF POLYMERIZATION REACTORS IS REDUCED WHEN THE POLYMERIZATION REACTION IS CONDUCTED IN THE PRESENCE OF SMALL AMOUNTS OF MAGNESIUM HYDROXIDE.
Inventors
- 👤 Clarence E Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 0
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |