US3095608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for extruding and curing polymeric compositions
Assignee: Cabot Corp
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Filing: 1959-12-09
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Granted: 1963-07-02
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Expires: 1979-12-09
Abstract
No abstract record available.
Inventors
- 👤 David D Munsell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:10
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/908; B29C48/03; B29C48/09; B29C48/901; B29C48/91; B29C48/919
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
IN EXTRUSION APPARATUS FOR CONTINUOUSLY EXTRUDING AND SIMULTANEOUSLY CURING TO TUBULAR FORM A POLYMERIC COMPOSITION THE MINIMUM PRACTICAL CURING TEMPERATURE FOR WHICH IS SUBSTANTIALLY ABOVE THE TEMPERATURE REQUIRED FOR SATISFACTORY EXTRUSION THEREOF, AN IMPROVED DIE ASSEMBLY LOCATED AT THE DISCHARGE END OF SAID EXTRUSION APPARATUS COMPRISING AN ELONGATED INNER MANDREL MEMBER CONCENTRICALLY MOUNTED WITHIN AN ELONGATED OUTER DIE MEMBER THEREBY FORMING A UNIFORM ANNULAR CHANNEL BETWEEN SAID MANDREL AND DIE MEMBERS, SAID MANDREL MEMBER BEING ELECTRICALLY ISOLATED FROM SAID DIE MEMBER,
References Cited (Backward Citations)
US2354714A
Cited
US2461630A
Cited
US2583329A
Cited
US2612656A
Cited
US2633602A
Cited
US2867004A
Cited
US2887721A
Cited
US2902716A
Cited
US2930083A
Cited
US2904664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |