Patent US3378192A successfully refreshed from Google Patents.
Patent US3849394A successfully refreshed from Google Patents.
US3849394A
Expired / Lapsed
US
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Monoazo pigments containing a hydroxynaphthoylaminoacridone radical
Assignee: Novartis AG
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Filing: 1971-09-28
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Granted: 1974-11-19
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Expires: 1991-09-28
Abstract
Abstract N=N-(6-X-1,3-PHENYLENE)-CO-NH-ARYL WHEREIN X IS HYDROGEN, CHLORINE, METHYL, OR METHOXY; ARYL IS PHENYL, OR PHENYL SUBSTITUTED BY CHLORINE, LOWER ALKYL, LOWER ALKOXY OR TRIFLUOROMETHYL; AND Z IS HYDROGEN HALOGEN, LOWER ALKOXY OR CYANO. 9-(O=)-ACRID-2-YL-NH-CO-(2-(HO-),6-Z-(NAPHTHAL-3,8-YLENE)- 1. AN AZO PIGMENT OF THE FORMULA
Inventors
- 👤 R Mory
- 👤 A Roueche
- 👤 W Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437; C09; C09B; C09B43/00; C09B43/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN AZO PIGMENT OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN AZO PIGMENT OF THE FORMULA
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |