P

Inventor

HELMLING WALTER

DE16 patents
⚠️ This page may combine multiple inventors who share the name “HELMLING WALTER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HOECHST AG

10 patents
US5003053AMar 26, 1991

Water-soluble monoazo compounds containing a p-aminophenylamino- and chloro- or fluoro-substituted triazinylamino group and a fiber-reactive group selected from the vinylsulfone series, suitable as dyestuffs

HOECHST AG13 citations73
US4786728ANov 22, 1988

Water-soluble triphendioxazine compounds

HOECHST AG10 citations73
US4898944AFeb 6, 1990

Precursors for the preparation of water-soluble triphendioxazine dyestuffs

HOECHST AG5 citations62
US4851527AJul 25, 1989

Water-soluble triphendioxazine compounds

HOECHST AG3 citations62
US4785099ANov 15, 1988

Water-soluble triphendioxazine compounds

HOECHST AG4 citations62
US4782150ANov 1, 1988

Water-soluble triphendioxazine compounds

HOECHST AG4 citations62
US4774333ASep 27, 1988

Water-soluble triphendioxazine compounds and sulfonyl-containing precursors thereof, processes for the preparation thereof and use of the triphendioxazines as dyes

HOECHST AG2 citations62
US4895954AJan 23, 1990

Precursors for synthesis of triphendioxazine dyestuffs

HOECHST AG0 citations51
US4885385ADec 5, 1989

Sulfonyl containing compounds suitable as precurors for water-soluble fiber-reactive triphendioxazine compounds

HOECHST AG1 citations51
US4816574AMar 28, 1989

Water-soluble triphendioxazine compounds

HOECHST AG1 citations51

HOECHST CELANESE CORP

6 patents
US5484459AJan 16, 1996

Mixture of water soluble reactive dyes and their use

HOECHST CELANESE CORP3 citations61
US5393884AFeb 28, 1995

Fiber reactive anthraquinone dyes

HOECHST CELANESE CORP2 citations61
US5350838ASep 27, 1994

High temperature process for preparing fiber reactive dyes

HOECHST CELANESE CORP5 citations60
US5563248AOct 8, 1996

Fiber reactive formazan dyes containing a vinyl sulfonyl reactive group

HOECHST CELANESE CORP2 citations57
US5539109AJul 23, 1996

Fiber-reactive triphenodioxazine dyes

HOECHST CELANESE CORP0 citations51
US5532362AJul 2, 1996

Fiber-reactive triphenodioxazine dyes

HOECHST CELANESE CORP1 citations45