Patent US5291599A successfully refreshed from Google Patents.
Patent US3351695A successfully refreshed from Google Patents.
US3351695A
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Method of and apparatus for extruding thermoplastic material
Assignee: Union Carbide Corp
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Filing: 1964-10-05
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Granted: 1967-11-07
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Hollingsworth J B Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
A METHOD OF EXTRUDING TEHREMOPLASTIC WHICH COMPRISES PROGRESSIVELY INCREASING THE LINEAR VELOCITY OF SAID THERMOPLASTIC MATERIAL AS IT PASSES THROUGH A PARALLEL PASSAGEWAY TO A DIE ORIFICE AND IN SAID DIE ORIFICE MAINTAINING THE LINEAR VELOCITY OF SAID THERMOPLASTIC MATERIAL EQUAL TO THE LINEAR VELOCITY OF SAID TEHRMOPLASTIC MATERIAL IN SAID PARALLEL PASSAGEWAY AT A POINT IMMEDIATELY PRIOR TO SAID DIE ORIFICE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |