US3709964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing polymeric film
Assignee: Agfa Gevaert NV
•
Filing: 1970-10-29
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Granted: 1973-01-09
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Expires: 1990-10-29
Abstract
Abstract THE OPERATION OF AN EXTRUSION ARRANGEMENT WHEREIN A DISCHARGE ELECTRODE DEPOSITS ELECTRIC CHARGES ON AN EXTRUDED MOLTEN FILM WHICH IS RECEIVED ON A QUENCHING SURFACE, IS FACILITATED WHEN THE DISCHARGE ELECTRODE IS LOCATED AT THE SIDE OF THE FILM WHICH WILL BE RECEIVED ON THE QUENCHING SURFACE.
Inventors
- 👤 Geest W De
- 👤 P Verkinderen
- 👤 Smedt F De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:15
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/915; B29C48/9165; B29C48/03; B29C48/07; B29C48/08; B29C48/36; B29C48/50; B29C48/505; B29C48/507; B29C48/509; B29C48/914; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |