US3780049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel complexes of dioximes and processes for their manufacture
Assignee: Novartis AG
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Filing: 1971-07-07
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Granted: 1973-12-18
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Expires: 1991-07-07
Abstract
Abstract NICKEL COMPLEXES OF DIOXIMES OF THE FORMULA (-N=C(-R)-C(-CH3)=N(-OH)-)>NI<(-N=C(-R)-C(-CH3)=N(-OH)-) WHEREIN R DENOTES OF HETEROCYCLIC RADICAL ARE USEFUL FOR COLORING PLASTICS AND LACQUERS IN FAST YELLOW SHADES.
Inventors
- 👤 S Hari
- 👤 K Ronco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:39
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07F; C07F15/00; C07F15/04; C07F15/045; C09; C09B; C09B57/00; C09B57/10
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |