Patent US3557252A successfully refreshed from Google Patents.
US3557252A
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US
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Poly(vinyl halide) compositions
Assignee: Phillips Petroleum Co
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Filing: 1969-01-17
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Granted: 1971-01-19
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Expires: 1989-01-17
Abstract
Abstract A POLY(VINYL HALIDE) IS MIXED WITH A BLOCK COPOLYMER OF CONJUGATED DIENES AND LACTONES OR WITH BLOCK COPOLYMERS OF MONOVINYL-SUBSTITUTED AROMATIC COMPOUNDS, CONJUGATED DIENES AND LACTONES TO FORM A COMPOSITION WITH IMPROVED IMPACT RESISTANCE.
Inventors
- 👤 Henry L Hsieh
- 👤 Francis X Mueller Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:00
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08L67/00; C08L67/04; C08L87/00; C08L87/005; Y; Y10; Y10S; Y10S525/00; Y10S525/932
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |