US3759733A
Expired / Lapsed
US
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Pigment compositions
Assignee: Novartis AG
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Filing: 1971-07-14
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Granted: 1973-09-18
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Expires: 1991-07-14
Abstract
Abstract A PROCESS IN WHICH A MONOAZO PIGMENT COMPOSITION IS PRODUCED WHICH COMPRISES COUPLING A DIAZOTISED PIGMENT ANILINE OR A DIAZOTISED SUBSTITUTED PIGMENT ANILINE WITH A PIGMENT COUPLING AGENT AND INCORPORATING IN THE PIGMENT A WATER-SOLUBLE AZO DYESTUFF.
Inventors
- 👤 G Brandley
- 👤 D Price
- 👤 A Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:15
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/006; C09B67/0033; C09B67/0046; C09B69/00; C09B69/02
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |