Hans-Martin Ruffer — 3 Patents at Hoechst Gmbh

Hans-Martin Ruffer has been granted 3 US patents while listed as an inventor at Hoechst Gmbh. The first was granted in 1996 and the most recent in September 1998. Hans-Martin Ruffer ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Hans-Martin Ruffer in Hofheim, DE.

Patents per Year

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5808142	Process for the preparation of 2-hydroxynaphthalene-6-carboxylic acid	Siegbert Rittner, Jorg Schmid, Thomas Wisser	1998-09-15	$970,000
5643494	Process for the preparation of aromatic hydroxy carboxylic acids	Siegbert Rittner, Jorg Schmid, Thomas Wisser	1997-07-01
5532406	Process for preparing aromatic hydroxycarboxylic acids	Siegbert Rittner, Jorg Schmid, Thomas Wisser	1996-07-02