Hans Leopold has been granted 7 US patents while listed as an inventor at Unknown . The first was granted in 1981 and the most recent in June 1996. Hans Leopold ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Hans Leopold in Cologne, DE.
Patents per Year Patents granted per year, 1981 to 1996 Bar chart with a peak of 2 patents in 1994. peak 2 1981: 1 patents 1981 1989: 1 patents 1989 1992: 1 patents 1992 1994: 2 patents 1994 1995: 1 patents 1995 1996: 1 patents 1996
Issued Patents All Time
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Showing 1–7 of 7 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
5523935 AC/DC voltage converter — 1996-06-04
5477726 Apparatus for determining the density of liquids and gases from a period of an oscillator filled with a test sample Hans Stabinger 1995-12-26
5351010 Resistance ratio measurement utilizing measuring currents of opposite plural direction Hans Stabinger , Klaus SCHRÖCKER 1994-09-27
5339258 Apparatus for determining the density of liquids and gases from a period of an oscillator filled with a test sample Hans Stabinger , Helmut Heimel 1994-08-16
5148170 High resolution analogue-to-digital converter Paul O'Leary , Manfred Pacher , Robert Roehrer , Gunter Winkler 1992-09-15
4838084 Density measuring instrument Hans Stabinger 1989-06-13
4289881 Process for the preparation of 1,4-diazabicyclo-(2,2,2)-octane Laszlo Imre , Walter Horstmann 1981-09-15
$1,285,000