EP0348346A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for the manufacture of opaque quinacridones
Assignee: Novartis AG
•
Filing: 1989-06-13
•
Granted: —
•
Expires: 2009-06-13
Abstract
Abstract Translated from German Verfahren zur Herstellung von opaken pigmentären disubstituierten Chinacridonderivaten durch Mahlung des Ausgangschinacridons bei Raumtemperatur oder nahezu Raumtemperatur in Gegenwart eines Alkohols und einer Base. Process for the preparation of opaque pigmentary disubstituted quinacridone derivatives by grinding the starting quinacridone at room temperature or near room temperature in the presence of an alcohol and a base.
Inventors
- 👤 Edward E. Jaffe
- 👤 Johannes Pfenninger
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:29
CPC Classifications
C; C09; C09B; C09B48/00; C09B67/00; C09B67/0001; C09B67/0022; C09B67/0014
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.