US3669658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive printing plate
Assignee: Fujifilm Holdings Corp
•
Filing: 1969-06-11
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Granted: 1972-06-13
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Expires: 1989-06-11
Abstract
Abstract A LIGHT-SENSITIVE LAYER ON A PHOTOSENSITIVE PRINTING PLATE WHICH YIELDS A VISIBLE IMAGE UPON EXPOSURE TO LIGHT COMPRISING AN O-QUINONE DIAZIDE OR AN O-NAPHTHOQUINONE DIAZIDE, AND A LEUCO DYE.
Inventors
- 👤 Teruhiko Yonezawa
- 👤 Kesanao Kobayashi
- 👤 Teruo Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:24
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |