US3632345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic material using splittable couplers
Assignee: Agfa Gevaert AG
•
Filing: 1968-04-02
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Granted: 1972-01-04
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Expires: 1988-04-02
Abstract
Abstract A color photographic material having a silver halide emulsion layer containing a nonperformed development-inhibiting-releasing compound of the tetrazole class which is noncolor forming.
Inventors
- 👤 Paul Marx
- 👤 Ulrich Heb
- 👤 Rigobert Otto
- 👤 Walter Puschel
- 👤 Willibald Pelz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:10
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/47; C07C; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/80; C07D239/56; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12; C07D257/00; C07D257/02; C07D257/04; C07D263/00; C07D263/52; C07D263/60; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07D285/135; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09; G03C5/00; G03C5/26; G03C5/29; G03C5/305; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
The composition of claim 1, wherein the development-inhibitor-releasing compound is contained in the silver halide emulsion layer in an amount of 1-5 g. per kg. of silver halide emulsion.
Claim 2
Dependent Claim
44 words
The composition of claim 2, wherein cyclic ring from the tetrazole series, the thiazole series, the oxdiazole series, the pyrimidine series, the thiadiazole series, the triazine series or triazole series or phenyl which may be substituted with carboxyl-, nitro- or an acylated amino group.
Claim 3
Dependent Claim
15 words
The composition of claim 2, wherein the development-inhibitor-releasing compound forms the development inhibitor 1-phenyl-5-mercapto tetraZole.
Claim 4
Dependent Claim
10 words
The composition of claim 2, wherein the development-inhibitor-releasing compound is
Claim 5
Dependent Claim
10 words
The composition of claim 2, wherein the development-inhibitor-releasing compound is
Claim 6
Dependent Claim
10 words
The composition of claim 2, wherein the development-inhibitor-releasing compound is
Claim 7
Dependent Claim
10 words
The composition of claim 2, wherein the development-inhibitor-releasing compound is
Claim 8
Dependent Claim
10 words
The composition of claim 2, wherein the development-inhibitor-releasing compound 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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |