US2647126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated phthalocyanine disulfonic acids
Assignee: Novartis AG
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Filing: 1950-07-10
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Granted: 1953-07-28
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Expires: 1970-07-10
Abstract
No abstract record available.
Inventors
- 👤 Pugin Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:32
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PHTHALOCYANIN DYESTUFF OBTAINED FROM A HALOGEN-FREE PHTHALOCYANIN DISULFONIC ACID CONTAINING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL BY REACTING IN AN ALKALI CHLORIDE-ALUMINUM CHLORIDE MELT WITH A HALOGENATING AGENT AT A TEMPERATURE BETWEEN 120 AND 200* UNTIL FROM 2 TO 7 HALOGEN ATOMS HAVE ENTERED THE DYESTUFF MOLECULE.
Claim 2
Dependent Claim
53 words
A PHTHALOCYANIN DYESTUFF OBTAINED FROM A HALOGEN-FREE PHTHALOCYANIN DISULFONIC ACID CONTAINING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL BY REACTING IN AN ALKALI CHLORIDE-ALUMINUM CHLORIDE MELT WITH A HALOGENATING AGENT AT A TEMPERATURE BETWEEN 120 AND 200* UNTIL FROM 2 TO 7 HALOGEN ATOMS HAVE ENTERED THE DYESTUFF MOLECULE.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |