US3785812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of exposure in multi-color electrophotography
Assignee: Fujifilm Holdings Corp
•
Filing: 1970-01-06
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Granted: 1974-01-15
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Expires: 1990-01-06
Abstract
Abstract An exposure method for use in multi-color electrophotography where (1) the degree of light diffusion is decreased when exposing with the blue component in a trichromatic separation, (2) the degree of light diffusion is increased when exposing with the other color components, and (3) a tungsten light source is used as the medium for projection.
Inventors
- 👤 S Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:55
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0105; G03G15/011; Y; Y10; Y10S; Y10S359/00; Y10S359/90
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |