Patent US3206529A successfully refreshed from Google Patents.
US3206529A
Expired / Lapsed
US
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Extrusion process and apparatus
Assignee: Akzona Inc
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Filing: 1962-10-31
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Granted: 1965-09-14
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Heijnis James W Ij
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:52
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/0885; B; B29; B29C; B29C48/00; B29C48/03; B29C48/04; B29C48/06; B29C48/25; B29C48/78; B29C48/86; B29C48/865; B29C48/88; B29C48/919; B29C48/05
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
A METHOD OF EXTRUDING THERMOPLASTIC STRUCTURE FROM MOLTEN POLYMER INTO A COOLING LIQUID COMPRISING (1) PASSING A MOLTEN POLYMER THROUGH A FORMING ORIFICE INTO THE COOLING LIQUID; AND (2) MAINTAINING A VAPOR ZONE IN SAID COOLING LIQUID SURROUNDING SAID FORMING ORIFICE TO PREVENT DIRECT CONTACT OF SAID COOLING LIQUID WITH SAID FORMING ORIFICE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |