Patent US3697305A successfully refreshed from Google Patents.
US3697305A
Expired / Lapsed
US
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Method for producing a photographic element
Assignee: Fujifilm Holdings Corp
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Filing: 1970-12-08
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Granted: 1972-10-10
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Expires: 1990-12-08
Abstract
Abstract A METHOD FOR PRODUCING A USEFUL AND PRACTICAL PHOTOGRAPHIC ELEMENT HAVING EXCELLENT WATER-RESISTING PROPERTIES, DIMENSIONAL STABILITY AND RAPID-DRYING QUALITIES COMPRISING TREATING A BIAXIALLY-STRETCHED AND ROUGHED POLYSTYRENE FILM BASE WITH A CORONA DISCHARGE OR ELECTRON IRRADIATION, APPLYING, IF NECESSARY, A GELATIN LAYER TO SAID BASE, AND THEN APPLYING A GELATIN-CONTAINING PHOTOGRAPHIC EMULSION OR SUSPENSION ONTO THE TREATED SURFACE OF THE SUPPORT.
Inventors
- 👤 Sumitaka Tatsuta
- 👤 Wataru Ueno
- 👤 Tatsuya Tajima
- 👤 Mutsuo Akao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/915; G03C1/795; G03C8/00; G03C8/42; G03C8/52; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/102
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |