Patent US3552971A successfully refreshed from Google Patents.
US3552971A
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US
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Positive sheet for diffusion transfer
Assignee: Fujifilm Holdings Corp
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Filing: 1967-12-05
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Granted: 1971-01-05
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Expires: 1987-12-05
Abstract
Abstract A POSITIVE SHEET FOR DIFFUSION TRANSFER COMPRISING A SUPPORT, A SUBBING LAYER, AN IMAGE-RECEIVING LAYER AND A SURFACE LAYER, SAID SURFACE LAYER COMPRISING A POLYMER INSOLUBLE IN WATER AND SOLUBLE IN AN ALKALINE AQUEOUS SOLUTION AND AN ORGANIC SOLVENT.
Inventors
- 👤 Haruo Takenaka
- 👤 Tadahiro Fujiwara
- 👤 Akiyasu Shiozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:13
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C8/28
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |