US3554752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive reproduction material
Assignee: Kalle GmbH and Co KG
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Filing: 1966-11-07
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Granted: 1971-01-12
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Expires: 1986-11-07
Abstract
Abstract LIGHT-SENSITIVE IMAGING MATERIAL COMPRISES A SUPPORT AND A COATING THEREON OF A COMPOSITION COMPRISING A HALOGENATED HYDROCARBON WHICH SPLITS OFF HALOGEN WHEN EXPOSED TO LIGHT, AN N-VINYL COMPOUND SELECTED FROM THE GROUP OF N-VINYL AMINES, N-VINYL AMIDES, AND N-VINYL IMIDES, AND A SENSITIZER WHICH IS A MEROCYANINE DYE. THE FIXING OF IMAGES RESULTING DIRECTLY FROM IMAGEWISE LIGHT EXPOSURE OF THE NEGATIVE-WORKING IMAGING MATERIAL IS EFFECTED BY WASHING THE MATERIAL WITH A SOLVENT FOR THE SENSITIZING DYE, FOR EXAMPLE WITH A PETROLEUM ETHER.
Inventors
- 👤 Ernst-August Hackmann
- 👤 Roland Dietrich
- 👤 Roland Moraw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |