US3629369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of modified polyvinyl chloride with high impact resistance
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1969-12-30
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Granted: 1971-12-21
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Expires: 1989-12-30
Abstract
Abstract POLYVINYL CHLORIDE HAVING HIGH IMPACT RESISTANCE IS DISCLOSED. THIS POLYVINYL CHLORIDE IS PREPARED BY POLYMERIZING AN AQUEOUS SUSPENSION OF VINYL CHLORIDE IN THE PRESENCE OF HALOGENATED BUTYL RUBBER.
Inventors
- 👤 Philippe Lalet
- 👤 Andre Miletto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/08; C08F255/10
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |