US3536797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for extruding a foamed polyolefin ribbon having a high gloss surface finish
Assignee: Phillips Petroleum Co
•
Filing: 1967-04-28
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Granted: 1970-10-27
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Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Royce G Cowan
- 👤 Dan F Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:28
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/36; B29C44/46; B29C44/50; B29C44/507; B29K; B29K2023/00; B29L; B29L2007/00; B29L2007/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2720680A
Cited
US2767435A
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US3311681A
Cited
US3299192A
Cited
US3317363A
Cited
US3426111A
Cited
US3260776A
Cited
US3422172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |