US3580722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide color photographic emulsion
Assignee: Konica Minolta Inc
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Filing: 1969-02-06
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Granted: 1971-05-25
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Expires: 1989-02-06
Abstract
Abstract A COLOR PHOTOGRAPHIC EMULSION CONTAINING A COLOR FORMER OF THE FORMULA: 1-(X1,X2,X3-PHENYL),3-R1,5-(O=)-2-PYRAZOLINE AND AT LEAST ONE COMPOUND OF THE FORMULA: A-CH(-B)-X4 OR X5-CH<(-CO-F-) WHEREIN R1 IS ALKYL, ACYLAMINO RO SULFONAMIDO; X1,X2 AND X3 ARE HYDROGEN, ALKYL, HALOGEN, ACYLAMINO, ALKYLCARBAMOLY, SULFONAMIDO, SULFAMOYL, ALKOXY OR ARYLOXY; A AND B ARE -COR2, -COOR2'', -CONHR2" OR -CN; R2, R2'',R2", X4 AND Y5 ARE ALLYL, ALKYL, ARYL, CYCLOALKYL OR ARAKYLY AND F IS AN ATOM OR RADICAL NECESSARY TO FORM A PYRAZOLONE RING.
Inventors
- 👤 Kenro Sakamoto
- 👤 Takao Takahashi
- 👤 Takeo Koitabashi
- 👤 Mitsuto Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:57
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/18; C07D231/20; C07D231/22; C07D231/26; C07D231/44; C07D231/52; C07D235/00; C07D235/02; C07D235/04; C07D235/18; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3225
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |