Patent US3459840A successfully refreshed from Google Patents.
US3459840A
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Process for melt extrusion of polyamide material
Assignee: EIDP Inc
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Filing: 1966-12-21
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Granted: 1969-08-05
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Stanley David Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:23
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/76; B29C48/022; B29C48/395; B29C48/505; B29C48/55; B29C48/72; B29C48/725; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92085; B29C2948/92104; B29C2948/92314; B29C2948/92323; B29C2948/92466; B29C2948/92504; B29C2948/92704; B29C2948/92809; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92895; B29C48/03; B29K; B29K2077/00
Claims Analysis
Total Claims: 0
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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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |