US3716366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-pyridinium salt and a phenyl boranate as photosensitive combination
Assignee: Agfa Gevaert AG
•
Filing: 1971-02-01
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Granted: 1973-02-13
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Expires: 1991-02-01
Abstract
Abstract Dark colored images are obtained by imagewise exposure of lightsensitive layers containing bis-pyridinium compounds and organic boran compounds as explained below.
Inventors
- 👤 O Riester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/735; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A silver halide free photosensitive material containing a light-sensitive combination of a bis-pyridinium salt component of the following formula
Claim 2
Dependent Claim
19 words
A silver halide free photosensitive material containing a light-sensitive combination of a bis-pyridinium salt component of the following formula
Claim 3
Dependent Claim
14 words
A photosensitive material as claimed in claim 1, wherein the bis-pyridinium salt component is
Claim 4
Dependent Claim
14 words
A photosensitive material as claimed in claim 1 wherein the bis-pyridinium salt component is
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |