Patent US3558700A successfully refreshed from Google Patents.
US3558700A
Expired / Lapsed
US
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Light sensitive color materials
Assignee: Fujifilm Holdings Corp
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Filing: 1966-10-12
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Granted: 1971-01-26
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Expires: 1986-10-12
Abstract
Abstract 2. A COLOR COUPLER COMPOUND REPRESENTED BY THE FORFULA: 2,4-DI(CL-),3-CH3-PHENOL WHEREIN Q REPRESENTS A COUPLER RESIDUAL GROUP CAPABLE OF COUPLING WITH THE OXIDATION PRODUCT OF A COLOR DEVELOPER AND (S) MEANS "SECONDARY," SAID COUPLER RESIDUAL GROUP BEING REPRESENTED BY THE FORMULA: 2-HO,3,5-DI(CL-),4-CH3-PHENYL
Inventors
- 👤 Shiro Kimura
- 👤 Makoto Yoshida Momotoshi Tsuda
- 👤 Akio Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:57
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335; C; C07; C07C; C07C51/00; C07C51/09; C07C51/58; C07C51/60; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/52; G03C7/3212
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A COLOR COUPLER COMPOUND REPRESENTED BY THE FORFULA:
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |