Siegfried Riegger — 3 Patents at Basf Se

Siegfried Riegger has been granted 3 US patents while listed as an inventor at Basf Se. The first was granted in 1985 and the most recent in August 1991. Siegfried Riegger ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Siegfried Riegger in Ettenheim, DE.

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Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5042740	Pressure spring for tape cassettes and tape cassettes having said spring	Klaus Schoettle, Juergen Dreyer, Willi Schuhmacher	1991-08-27
4578455	Process and apparatus for removing volatile constituents from polymer melts or pastes	Gunter Pipper, Josef G. Floss	1986-03-25
4540772	Continuous preparation of nylon from aqueous salt solution in precondensation zone having baffles	Gunter Pipper, Franz Schmidt, Rainer Theysohn, Eduard Heil, Hermann Fischer +2 more	1985-09-10

Siegfried Riegger — 3 Patents

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