Herbert Helfert — 10 Patents at Basf Se

Herbert Helfert has been granted 10 US patents while listed as an inventor at Basf Se. The first was granted in 1980 and the most recent in May 2005. Herbert Helfert ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Herbert Helfert in Bischofswerda, DE.

Patents per Year

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Showing 1–10 of 10 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6888006	Method for processing pyrollidone and n-vinyl pyrollidone residues	Martin Schmidt-Radde, Gerhard Laqua, Ulrich Eiden, Stephan Scholl, Christoph Übler	2005-05-03	$266,000
6703511	Method for obtaining pure n-vinyl pyrrolidone	Bernd Eck, Jorg Heilek, Martin Schmidt-Radde	2004-03-09	$708,000
5948945	Prevention of spontaneous decomposition of gaseous acetylene	Rudolf Erich Lorenz, Martin Schmidt-Radde, Hans-Peter Schildberg, Gunter Saladin	1999-09-07
5723685	Preparation of monovinyl ethers	Marc Heider, Thomas Ruhl, Martin Schmidt-Radde, Jochem Henkelmann	1998-03-03
5710284	Purification of N-vinylpyrrolidone by crystallization	Martin Schmidt-Radde, Bernd Eck, Bernhard Maltry	1998-01-20
5461159	Binding chemical impurities contained in crude N-vinylpyrrolid-2-one	Brigitta Huckestein, Rainer Blankenburg	1995-10-24
4614604	Lubricants for shaping polyvinyl chloride, which contain esterified oligomeric polyhydric alcohols	Wolf-Dieter Balzer, Guenter Hatzmann, Wolfram Dietsche, Albert Hettche, Stefan Weiss	1986-09-30
4294576	Removal of oligomer deposits from textile materials	Friedrich Reinert, Paul Anthony Richter, Michele Vescia, Dieter Wegerle	1981-10-13
4275244	Linear polyalkylene ether glycols of high molecular weight	Pauls Davis	1981-06-23
4207199	Solid cold bleach activators for detergents and cleaning agents containing an active oxygen donor	Johannes Perner	1980-06-10

Herbert Helfert — 10 Patents

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