Ortwin Schaffer — 19 Patents at Basf Se

Ortwin Schaffer has been granted 19 US patents while listed as an inventor at Basf Se. The first was granted in 1982 and the most recent in August 1998. Ortwin Schaffer ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Ortwin Schaffer in Stockach, DE.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #	Title	Co-Inventors	Date
5789557	Reactive azo dyes with a coupler of the aminonaphthalene series	Jurgen Dornhagen, Heike Kilburg, Manfred Patsch, Hermann Loffler	1998-08-04
5510468	Amino benzophenone dye	Gunther Lamm, Helmut Reichelt	1996-04-23
5380859	Pyridone compounds and the preparation of disulfonated pyridone compounds	Gunther Lamm, Helmut Beichelt	1995-01-10
5372609	Self-tanning, pretanning and assist tanning of pelts and skin pelts and retanning of leather and skin	Juergen Weiser, Wolfgang Reuther, Hermann Birkhofer, Karl Stork	1994-12-13
5342916	Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases, and formaldehyde, and their use as tanning agents and as spraying aids for redispersible polymer powders	Juergen Weiser, Wolfgang Reuther, Karl Stork, Gernot Franzmann, Thomas Schwerzel +3 more	1994-08-30
5320647	Fluent polyazo dye preparations and method of dying leather or wool therewith	Georg Henning, Georg Zeidler	1994-06-14
5286263	Use of copolymers based on long-chain alkyl vinyl ethers and ethylenically unsaturated dicarboxylic anhydrides for rendering leathers and skins water-repellent	Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more	1994-02-15
5279613	Copolymers based on long-chain olefins and ethylenically unsaturated dicarboxylic anhydrides for rendering leathers and skins water-repellent	Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more	1994-01-18
5224963	Quaternized condensation products for aftertreating dyed leather	Johannes P. Dix, Rolf Fikentscher, Rolf Streicher	1993-07-06
5155164	Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde	Hermann Graf, Adolf Stuebinger, Klaus Lorenz, Karl Stork	1992-10-13
5124181	Copolymers based on long-chain unsaturated esters and ethylenically unsaturated carboxylic acids for making leather and furs water repellent	Herbert Bay, Karl Stork, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more	1992-06-23
5104979	Polyazo dyes with diazo components of the aminophenol and the amino diphenyl-sulfide, -sulfoxide or -sulfone series	Guenter Hansen, Georg Zeidler	1992-04-14
4983185	Dyeing of leather with pigments	Rolf Streicher, Horst Belde, Paul Guenthert	1991-01-08
4936864	Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistants, their preparation and use in the tanning of leather	Rolf Fikentscher, Dietrich Lach, Rolf Streicher, Alfred Oftring	1990-06-26
4888412	Tanning assistant	Klaus Ebel, Wolfgang Reuther, Rolf Fikentscher, Dietrich Lach, Rolf Streicher	1989-12-19
4801693	Substituted sulfobenzene and triazine-containing reactive dyes	Manfred Patsch	1989-01-31
4729768	Deliming of hides and use of cyclic esters of sulfurous acid as deliming agents	Kurt Schneider, Dietrich Lach, Rolf Streicher	1988-03-08
4677199	Reactive dyes containing substituted 4-fluoropyridaz-6-one radicals	Dietmar Augart, Heinz Eilingsfeld, Heinz-Wolfgang Krueger, Hartmut Lardon, Guenther Seybold	1987-06-30
4351640	Dye powder formulation	Manfred Herrmann	1982-09-28

Ortwin Schaffer — 19 Patents

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