US3705807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material for radiography
Assignee: 3M Co
•
Filing: 1971-04-26
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Granted: 1972-12-12
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Expires: 1991-04-26
Abstract
Abstract A RADIOGRAPHIC ELEMENT CAPABLE OF BEING HANDLED UNDER YELLOW SAFELIGHTS, THE ELEMENT CONTAINING A FILTER DYE WHICH ITSELF IMPORTS TO THE ELEMENT A DENSITY TO YELLOW LIGHT OF NOT LESS THAN 0.4 AND A DENSITY TO BLUE LIGHT OF NOT GREATER THAN 0.1.
Inventors
- 👤 Vinicio Busatto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:31
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/16; G03C1/00; G03C1/76; G03C1/825; G03C1/83
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |