Our Patents
Date: June 10, 1981
Patent Number: 4,292,978
“A breath-test mouthpiece of the type used to remove solids, saliva, and water vapor from the breath of a subject being tested…”
Date: October 12, 1982
Patent Number: 4,353,869
Glass ampoule liquid-holding device that “may be placed in apparatus for conducting an optical analysis of liquid in the ampoule.”
Date: October 4, 1983
Patent Number: 4,407,152
“A breath test simulator and method for accurately calibrating breath test instruments used to determine the concentration of ethyl alcohol in breath.”
Date: October 29, 2008
Patent Number: 7,404,311
“A breath simulator for Supplying a breath test analyzer with a sample effluent of ethyl alcohol that controls headspace and adjacent effluent passageway temperature.”
Date: February 24, 2009
Patent Number: 7,493,793 B2
“A breath simulator for Supplying a breath test analyzer with a sample effluent of ethyl alcohol that controls headspace and adjacent effluent passageway temperature.”
Date: March 11, 2014
Patent Number: 8,667,829 B2
“A breath test simulator for Supplying a breath test analyzer with a vapor including ethyl alcohol includes aheated thermal mass to heat an inlet passage.”
