Inventor · disambiguated record
Walter Helmling
Also filed as: HELMLING WALTER
16 granted patents·56 citations·filing 1986–1995
91Inventor score
Top patents by PatentIndex Score
16 records- 0174US5003053AWater-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 dyestuffsHOECHST AG·Filed 1990·Granted Mar 26, 1991·13 cites·11 claims
- 0273US4786728AWater-soluble triphendioxazine compoundsHOECHST AG·Filed 1986·Granted Nov 22, 1988·10 cites·15 claims
- 0358US4898944APrecursors for the preparation of water-soluble triphendioxazine dyestuffsHOECHST AG·Filed 1988·Granted Feb 6, 1990·5 cites·10 claims
- 0453US5350838AHigh temperature process for preparing fiber reactive dyesHOECHST CELANESE CORP·Filed 1993·Granted Sep 27, 1994·5 cites·9 claims
- 0549US4785099AWater-soluble triphendioxazine compoundsHOECHST AG·Filed 1986·Granted Nov 15, 1988·4 cites·6 claims
- 0649US4782150AWater-soluble triphendioxazine compoundsHOECHST AG·Filed 1987·Granted Nov 1, 1988·4 cites·18 claims
- 0746US5484459AMixture of water soluble reactive dyes and their useHOECHST CELANESE CORP·Filed 1994·Granted Jan 16, 1996·3 cites·5 claims
- 0844US4851527AWater-soluble triphendioxazine compoundsHOECHST AG·Filed 1986·Granted Jul 25, 1989·3 cites·16 claims
- 0942US4774333AWater-soluble triphendioxazine compounds and sulfonyl-containing precursors thereof, processes for the preparation thereof and use of the triphendioxazines as dyesHOECHST AG·Filed 1987·Granted Sep 27, 1988·2 cites·14 claims
- 1041US5393884AFiber reactive anthraquinone dyesHOECHST CELANESE CORP·Filed 1993·Granted Feb 28, 1995·2 cites·8 claims
- 1139US5563248AFiber reactive formazan dyes containing a vinyl sulfonyl reactive groupHOECHST CELANESE CORP·Filed 1995·Granted Oct 8, 1996·2 cites·2 claims
- 1237US4885385ASulfonyl containing compounds suitable as precurors for water-soluble fiber-reactive triphendioxazine compoundsHOECHST AG·Filed 1988·Granted Dec 5, 1989·1 cites·11 claims
- 1337US4816574AWater-soluble triphendioxazine compoundsHOECHST AG·Filed 1987·Granted Mar 28, 1989·1 cites·19 claims
- 1434US4895954APrecursors for synthesis of triphendioxazine dyestuffsHOECHST AG·Filed 1988·Granted Jan 23, 1990·0 cites·19 claims
- 1531US5532362AFiber-reactive triphenodioxazine dyesHOECHST CELANESE CORP·Filed 1995·Granted Jul 2, 1996·1 cites·6 claims
- 1630US5539109AFiber-reactive triphenodioxazine dyesHOECHST CELANESE CORP·Filed 1994·Granted Jul 23, 1996·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →