DS

Donald H. Stedman

EH Environmental Systems Products Holdings: 8 patents #1 of 36Top 3%
EH Envirotest Systems Holdings: 8 patents #1 of 33Top 4%
CS Colorado Seminary: 5 patents #1 of 33Top 4%
SI Sievers Instruments: 4 patents #4 of 14Top 30%
AT Ada Technologies: 1 patents #23 of 46Top 50%
University of Michigan: 1 patents #1,906 of 4,352Top 45%
SL Scintrex Limited: 1 patents #4 of 13Top 35%
SI Sensors Incorporated: 1 patents #52 of 100Top 55%
TC The International Nickel Company: 1 patents #28 of 58Top 50%
📍 Ann Arbor, MI: #205 of 6,071 inventorsTop 4%
🗺 Michigan: #1,963 of 86,293 inventorsTop 3%
Overall (All Time): #113,809 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 26–32 of 32 patents

Patent #TitleCo-InventorsDate
5310683 Process for simultaneous measurement of sulfur and non-sulfur containing compounds Richard D. Godec, Neil Johansen 1994-05-10
5227135 Apparatus for simultaneous measurement of sulfur and non-sulfur containing compounds Richard D. Godec, Neil Johansen 1993-07-13
5210702 Apparatus for remote analysis of vehicle emissions Gary Bishop 1993-05-11
5070246 Spectrometer for measuring the concentration of components in a fluid stream and method for using same Michael D. Durham, Timothy George Ebner, Mark R. Burkhardt 1991-12-03
4765961 Apparatus for detection of certain nitrogen-containing gases using chemiluminescence Harold I. Schiff 1988-08-23
4678488 Liquid separator for gas analyzer Charles P. Howard 1987-07-07
4205956 Nickel carbonyl analyzer 1980-06-03