Patent US3640752A successfully refreshed from Google Patents.
US3640752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating method
Assignee: Fujifilm Holdings Corp
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Filing: 1969-06-24
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Granted: 1972-02-08
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Expires: 1989-06-24
Abstract
Abstract In coating a coating composition on a web by a bridge of the coating composition between a coating applicator and the web, a gas blowing slot is formed at the side of the coating applicator into which the web enters to remove air or dust carried on the surface of the entering support and to provide a reduced pressure space at the back side of the bridge so that the bridge is maintained stable when the coating speed is increased.
Inventors
- 👤 Mamoru Ishiwata
- 👤 Huruya Akio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:18
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/30; B; B05; B05C; B05C5/00; B05C5/02; B05C5/0254; D21H5/00; D21H5/0005; D21H5/0007; G; G03; G03C; G03C1/00; G03C1/74
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
A method as set forth in claim 1 further comprising c. adding a surface treatment agent to said gas jet to provide for simultaneous surface treatment of said web along with the application of said gas jet.
References Cited (Backward Citations)
US2681294A
Cited
US2795522A
Cited
US2815307A
Cited
US2761791A
Cited
US3206323A
Cited
US3220877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |