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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Willy van Pee — 5 Patents

Basf Se: 5 patents #3,244 of 13,826Top 25%
Ekeren, BE: #77 of 496 inventorsTop 20%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Willy van Pee has been granted 5 US patents while listed as an inventor at Basf Se. The first was granted in 1981 and the most recent in June 2003. Willy van Pee ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Willy van Pee in Ekeren, BE.

Patents per Year

Patents granted per year, 1981 to 2003Bar chart with a peak of 2 patents in 1993.peak 21981: 1 patents19811993: 2 patents19932001: 1 patents20012003: 1 patents2003

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6576788 METHOD FOR PRODUCING MIXTURES CONSISTING OF DIPHENYLMETHANE DIISOCYANATES AND POLYPHENYLENE-POLYMETHYLENE-POLYISOCYANATES CONTAINING A REDUCED AMOUNT OF CHLORINATED SECONDARY PRODUCTS AND WITH A REDUCED IODINE COLOR INDEX Ulrich Penzel, Volker Scharr, Dieter Starosta, Hilmar Boesel, Eckhard Ströfer +8 more 2003-06-10 $724,000
6229043 Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced iodine color number and a reduced chlorine content Dietrich Scherzer, Bernd Bruchmann, Roland Minges, Peter Keller, Wolfgang Heider +4 more 2001-05-08 $458,000
5207942 Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced iodine color number Dietrich Scherzer, Roland Minges, Werner Langer, Bernd Bruchmann, Wolfgang Heider +2 more 1993-05-04
5208368 Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates of reduced iodine color number Dietrich Scherzer, Roland Minges, Bernd Bruchmann, Wolfgang Heider, Peter Keller 1993-05-04
4294666 Process for the manufacture of 4,4'-diphenyl-methane diisocyanate and a mixture of diphenyl-methane diisocyanate isomers containing a small amount of uretdiones and hydrolyzable chlorine Hans J. Astheimer, Horst Brandtstaedter, Rainer Ohlinger, Jaak Van Steen, Friedrich Sauer +2 more 1981-10-13