US3351695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for extruding thermoplastic material
Assignee: Union Carbide Corp
•
Filing: 1964-10-05
•
Granted: 1967-11-07
•
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
2026-11-05 05:41
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.
References Cited (Backward Citations)
CA572082A
Cited
US3168509A
Cited
US2061042A
Cited
US2547151A
Cited
US2541201A
Cited
US2810159A
Cited
US2761791A
Cited
US2975475A
Cited
US2971222A
Cited
US2938231A
Cited
US3008187A
Cited
US3032822A
Cited
US3212134A
Cited
US3226766A
Cited
US3244781A
Cited
US3251911A
Cited
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 |