Patent US4361613A successfully refreshed from Google Patents.
US4355159A
Expired / Lapsed
US
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Nickel complex pigments of azines
Assignee: BASF Corp
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Filing: 1980-05-13
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Granted: 1982-10-19
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Expires: 2000-05-13
Abstract
Abstract 1:1 Nickel complexes of azines of the formula I or of a tautomer thereof ##STR1## wherein R 1 is hydrogen or methyl, R 2 is methyl or carbamoyl, R 3 is hydrogen or chlorine, R 4 is hydrogen, chlorine, methyl, trifluoromethyl or sulfamoyl, R 5 is hydrogen or chlorine, R 6 is hydrogen, chlorine, bromine, methyl, methoxy, trifluoromethyl, carbamoyl or alkanoylamino containing 2 to 4 carbon atoms, with the proviso that, if R 2 is carbamoyl, at least two of the substituents R 3 to R 6 are halogen atoms and/or trifluoromethyl groups, color plastics, lacquers and printing inks in orange to red shades of outstanding fastness properties.
Inventors
- 👤 Abul Iqbal
- 👤 Paul Lienhard
- 👤 Andre Pugin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:29
CPC Classifications
C; C09; C09B; C09B26/00; C09B26/02; C09B57/00; C09B57/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
The nickel complex pigment having the formula ##STR9## or a tautomer thereof.
Claim 2
Dependent Claim
12 words
The nickel complex pigment having the formula ##STR9## or a tautomer thereof.
Claim 3
Dependent Claim
12 words
The nickel complex pigment having the formula ##STR10## or a tautomer thereof.
Claim 4
Dependent Claim
12 words
The nickel complex pigment having the formula ##STR10## or a tautomer thereof.
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) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |