Invention Grant
- Patent Title: Polyazo-dyestuffs
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Application No.: US69781257Application Date: 1957-11-21
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Publication No.: US2897188APublication Date: 1959-07-28
- Inventor: JOSEF WEISSERT , HELMUT GIES
- Applicant: HOECHST AG
- Assignee: Hoechst AG
- Current Assignee: Hoechst AG
- Priority: DEF0021772 1956-11-28
- Main IPC: C09B33/00
- IPC: C09B33/00 ; C09B33/02 ; C09B33/04 ; C09B33/18 ; D06P3/32
Information query
