US3560600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment on extruded plastic foam
Assignee: Dow Chemical Co
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Filing: 1963-11-07
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Granted: 1971-02-02
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Expires: 1983-11-07
Abstract
Abstract METHOD AND APPARATUS FOR DIRECTING A COOLING MEDIUM ON OPPOSITE SIDES OF A TUBULAR FOAM EXTRUDATE TO PROVIDE A HIGH QUALITY SHEET HAVING EXCEPTIONALLY SMOOTH, HIGH GLOSS SURFACE FREE OF DEFECTS. D R A W I N G
Inventors
- 👤 Vern L Gliniecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:47
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; B29C44/507; B29L; B29L2023/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |