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EH

Erwin Hahn — 51 Patents

Basf Se: 51 patents #138 of 13,826Top 1%
Heidelberg, DE: #14 of 2,101 inventorsTop 1%
Overall (All Time): #51,932 of 4,157,543Top 2%
51 Patents All Time
Erwin Hahn has been granted 51 US patents while listed as an inventor at Basf Se. The first was granted in 1980 and the most recent in October 1996. Erwin Hahn ranks #51,932 of 4,157,543 US inventors in our database (top 1.2%). Patent records list Erwin Hahn in Heidelberg, DE.

Issued Patents All Time

Showing 1–25 of 51 patents

Patent #TitleCo-InventorsDate
5560961 Process of making metal-coated melamine/formaldehyde resin fibers Joerg Adel, Bernd Ziegler, Georg Mermigidis 1996-10-01
5470502 Fluorescent pigments Werner Ostertag, Guenther Seybold 1995-11-28
5424461 Preparation of 1-amino-4-hydroxyanthraquinone Manfred Patsch, Heike Kilburg 1995-06-13
5421990 Production of shining shaped articles coated with zinc or a zinc alloy Bernhard Dung, Bernd Burkhart, Chung-Ji Tschang 1995-06-06
5410053 Rhodamine derivatives Claudia Kraeh, Udo Mayer, Bernhard Albert, Walter Denzinger 1995-04-25
5393828 Chemical degradation of cured amino resins Juergen Weiser, Wolfgang Reuther 1995-02-28
5382476 Recycling of cured aminoplast resins Juergen Weiser, Wolfgang Reuther 1995-01-17
5371232 Preparation of 2-(4-aminophenyl)benzothiazole compounds Christoph Bomba, Guido Kuth, Paul Guenthert 1994-12-06
5356938 Recycling of cured aminoplast resins Juergen Weiser, Wolfgang Reuther 1994-10-18
5332830 Preparation of N-hydroxyazoles Klaus Horchler von Locquenghien, Wolfgang Hoelderich, Ulf Baus, Wolfgang Reuther 1994-07-26
5306815 Azo dyes with a coupling component of the quinoline series Clemens Grund, Andreas Geisberger, Helmut Reichelt, Andreas Guldner, Mathias Wiesenfeldt +3 more 1994-04-26
5298610 Thiazoleazo dyes having a coupling component of the diphenylamine series Matthias Wiesenfeldt, Helmut Reichelt, Sabine Gruettner-Merten 1994-03-29
5286401 Use of heterocyclic compounds as bleach activators or optical brighteners in washing and cleaning agents Bernhard Dung, Wolfgang Trieselt, Johannes Perner, Alfred Oftring 1994-02-15
5286854 Basic azo dyes with a coupling component of the hydroxynaphthalenecarboxylic acid series Heidi Hengelsberg, Udo Mayer 1994-02-15
5270456 Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series Guenter Hansen, Karl-Heinz Etzbach, Helmut Reichelt, Ernst Schefczik, Sabine Greuttner +1 more 1993-12-14
5256826 Preparation of aromatic carbonyl or sulfonyl compounds with an aryl ether structure Heinrich J. Eilingsfeld, Helmut Reichelt, Alexander Aumueller, Bernd Hupfeld 1993-10-26
5154763 Stabilized aqueous alkyldiketene emulsions Peter Ksoll, Peter Wittmer, Andreas Hohmann, Arnold De Clercq, Ulrich Riebeling 1992-10-13
5144064 Preparation of J-acid urea Udo Mayer, Friedrich-Wilhelm Raulfs, Ulrike Schloesser 1992-09-01
5131981 Coloring paper Georg Henning, Manfred Mielke, Hans-Juergen Degen, Sigberg Pfohl 1992-07-21
5112362 Navy dye mixtures of azo disperse dyes for polyester Guenter Hansen, Gunther Lamm, Helmut Reichelt, Gerhard Wagenblast 1992-05-12
5076808 Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer Alexander Aumueller, Wolfgang Reuther, Reinhold Krallmann, Dieter Wegerle 1991-12-31
5062861 Novel navy and black disperse dye mixtures including amino-phenyl thiophene azo disperse dye and red, yellow or orange disperse dyes Guenter Hansen, Karl-Heinz Etzbach, Helmut Reichelt, Ernst Schefczik, Helmut Degen +2 more 1991-11-05
5051504 Doubled triphenylmethane dyes having bis acylpiperazine linkage Walter Breitschaft, Udo Mayer, Gunter-Rudolf Schroeder 1991-09-24
4970321 Preparation of cyclic N,N'-dimethylureas Rainer Betz, Rolf Fikentscher 1990-11-13
4945167 Preparation of N-hydroxypyrazoles Ulf Baus, Wolfgang Reuther 1990-07-31