Helmut Hoch — 17 Patents at Basf Se

Helmut Hoch has been granted 17 US patents while listed as an inventor at Basf Se. The first was granted in 1980 and the most recent in June 1996. Helmut Hoch ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Helmut Hoch in Monsheim, DE.

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #	Title	Co-Inventors	Date
5525743	Preparation of anthraquinone imide compounds	Udo Bergmann, Heike Kilburg, Reinhold Kohlhaupt, Matthias Niedenbrueck	1996-06-11
5342950	Preparation of quinophthalone derivatives	Gerhard Kilpper	1994-08-30
5210190	Preparation of triazinyl-bis-anthraquinone dyes by reacting aryldihalotriazine with amino anthraquinone	Reinhard Helwig, Gerhard Epple	1993-05-11
5066820	Process for the preparation of 1-amino-2-carboxyanthraquinones	Reinhard Helwig	1991-11-19
4979684	Dispersion, comminution or deagglomeration and classification of solids	Reinhard Polke, Norbert Scholz	1990-12-25
4950756	Preparation of 1-nitroanthraquinone-2-carboxylic acid	Jochem Henkelmann, Thomas-Michael Kahl, Gerhard Kilpper, Walter Maier	1990-08-21
4916244	Preparation of 1-amino-4-hydroxy-2-(6'-hydroxyhexoxy)-anthraquinone	—	1990-04-10
4904796	Preparation of a blue anthraquinonoid disperse dye of 1,4-naphthoquinone-[2,]-phthalimides	Eberhard Michaelis	1990-02-27
4882095	Preparation of alkoxy(iso)violanthrenediones	Reinhard Helwig	1989-11-21
4824608	Preparation of C.I. Vat Blue 16	Reinhard Helwig	1989-04-25
4431824	Preparation of 4,4',7,7'-tetrachlorothioindigo pigments of high color strength	Heinrich Hiller	1984-02-14
4332955	Preparation of transparent pigmentary forms of 4,4',7,7'-tetrachlorothioindigo	Erwin Hahn, Heinrich Hiller	1982-06-01
4323510	Brown vat dye and its preparation	Heinrich Hiller	1982-04-06
4298534	Preparation of brilliant, transparent pigmentary bromo-isoviolanthrone of high tinctorial strength	Erwin Hahn, Heinrich Hiller	1981-11-03
4286094	Preparation of a pigmentary form of perylene-3,4,9,10-tetracarboxylic acid diimide	Heinrich Hiller	1981-08-25
4217455	Preparation of transparent and easily dispersible perylene-3,4,9,10-tetracarboxylic acid diimide pigments of high tinctorial strength	Heinrich Hiller	1980-08-12
4189582	Process for upgrading the color value of 3,4,9,10-tetracarboxylic acid N,N'-bis-methylimide	Heinrich Hiller	1980-02-19

Helmut Hoch — 17 Patents

Issued Patents All Time

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