US3780154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the continuous production and/or covering of extruded sections
Assignee: Bayer AG
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Filing: 1971-06-15
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Granted: 1973-12-18
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Expires: 1991-06-15
Abstract
Abstract Extruded sections are covered with plasticised synthetic plastics material in an extruder nozzle, by having the plastic synthetic plastics material first of all flowing from outside around the extruder nozzle, then guided opposite to the ejection direction, and then deflected into the duct of the extruder nozzle.
Inventors
- 👤 K Muller
- 👤 K Richter
- 👤 H Rohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/07; B29C48/304; B29C48/05; B29C48/06; B29C48/08; B29C48/09; B29C48/10; B29C48/12; B29C48/15; B29C48/154
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |