US3737509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film casting process
Assignee: Fujifilm Holdings Corp
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Filing: 1970-04-28
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Granted: 1973-06-05
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Expires: 1990-04-28
Abstract
Abstract EXTRUDING LIQUID FILM FORMING MATERIAL ONTO A MOVING, CURVED SUPPORTING SURFACE AT A POSITION WHERE THE CURVE SUPPORTING SURFACE IS BOTH UPWARDLY FACING AND UPWARDLY MOVING WHEREIN THE SAID MATERIAL CONTACTS SAID SURFACE WITH THE ANGLE BETWEEN A TANGENT AT SAID SUPPORTING SURFACE AT SAID POSITION AND HORIZONTAL IN THE DIRECTION OF SUPPORT SURFACE TRAVEL BEING BETWEEN 30* AND 60*.
Inventors
- 👤 K Kobayashi
- 👤 K Nishizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/915; B29C48/03; B29C48/07; B29C48/08; B29C48/914
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |