WK

Wilhelmus F. Knippenberg

U.S. Philips: 6 patents #699 of 8,851Top 8%
Overall (All Time): #895,990 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
4629320 Cuvette for the atomic absorption spectrometry Bernhard Lersmacher 1986-12-16
4547069 Tubular cuvette for atomic absorption spectrometry Bernhard Lersmacher 1985-10-15
4367246 Methods of manufacturing crucible for flameless atomic absorption spectroscopy Bernhard Lersmacher 1983-01-04
4280049 X-ray spectrometer Helmut Werner, Antonius W. Witmer 1981-07-21
4208449 Method of making an electric resistor having a resistance body consisting of silicon carbide having a negative temperature coefficient Gerrit Verspui, Siegfried Hendrik Hagen 1980-06-17
4204769 Cuvette for flameless atom absorption spectroscopy Bernhard Lersmacher, Hans Lydtin, Karlheinz Schelhas 1980-05-27