Rudolf Stephan has been granted 9 US patents while listed as an inventor at Basf Se . The first was granted in 1980 and the most recent in April 2002. Rudolf Stephan ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Rudolf Stephan in Ludwigshafen, DE.
Patents per Year Patents granted per year, 1980 to 2002 Bar chart with a peak of 3 patents in 1984. peak 3 1980: 1 patents 1980 1981: 1 patents 1981 1983: 1 patents 1983 1984: 3 patents 1984 1987: 1 patents 1987 1988: 1 patents 1988 2002: 1 patents 2002
Issued Patents All Time
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Showing 1–9 of 9 patents
Patent # Title Co-Inventors Date
6367275 Method of cooling air in the under-roof spaces of buildings — 2002-04-09
4788253 Thermoplastic molding material Juergen Hambrecht , Burghard Schmitt , Johann Swoboda , Georg Wassmuth , Claus Bernhard 1988-11-29
4634734 Thermoplastic molding material Juergen Hambrecht , Burghard Schmitt , Johann Swoboda , Georg Wassmuth , Claus Bernhard 1987-01-06
4468353 Method of preparing alkoxymethylene compounds Otto Ackermann , Dieter Bretzinger , Herbert Schneidewind 1984-08-28
4442263 Thermoplastic molding materials Franz Brandstetter , Juergen Hambrecht , Heinz-Juergen Overhoff , Josef Schwaab , Claus Bernhard +2 more 1984-04-10
4433102 Thermoplastic molding materials Franz Brandstetter , Juergen Hambrecht 1984-02-21
4393164 Transparent impact-resistant molding material Graham E. McKee , Franz Haaf , Juergen Hambrecht , Klaus Benker , Hans-Werner Breuer 1983-07-12
4277418 Method of preparing alkoxymethylene compounds Otto Ackermann , Dieter Bretzinger , Herbert Schneidewind 1981-07-07
4200702 Self-extinguishing thermoplastic molding compositions Hermann Gausepohl , Herbert Naarmann , Klaus Penzien 1980-04-29
