Invention Grant
- Patent Title: Gallocyanine dyestuffs
- Patent Title (中): 花青素染料
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Application No.: US32074528Application Date: 1928-11-20
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Publication No.: US1834620APublication Date: 1931-12-01
- Inventor: ERNST HUG , HEINRICH WERDENBERG
- Applicant: DURAND & HUGUENIN SA
- Assignee: Durand & Huguenin Sa
- Current Assignee: Durand & Huguenin Sa
- Priority: DE1834620X 1927-11-26
- Main IPC: C09B19/00
- IPC: C09B19/00
Information query
