Assignee
CITY TECH
GB27 patents
Top patents by PatentIndex Score
US4633704AJan 6, 1987
Gas sensor
CITY TECH66 citations95
US4587003AMay 6, 1986
Gas sensor
CITY TECH65 citations95
US4474648AOct 2, 1984
Gas sensor
CITY TECH57 citations94
US4132616AJan 2, 1979
Gas sensor
CITY TECH85 citations93
US5234567AAug 10, 1993
Gas sensor
CITY TECH26 citations91
US4324632AApr 13, 1982
Gas sensor
CITY TECH47 citations91
US7279080B2Oct 9, 2007
Gas sensors
CITY TECH28 citations90
US5668302ASep 16, 1997
Electrochemical gas sensor assembly
CITY TECH59 citations89
US5395501AMar 7, 1995
Gas generating apparatus
CITY TECH35 citations89
US7575717B2Aug 18, 2009
Assay device for evaluating entrainable substances
CITY TECH23 citations88
US7282168B2Oct 16, 2007
Gas sensor assembly and method
CITY TECH28 citations87
US4829809AMay 16, 1989
Gas calibration method and apparatus
CITY TECH28 citations86
US7541587B2Jun 2, 2009
Gas sensor
CITY TECH24 citations84
US7236095B2Jun 26, 2007
Solid state sensor for carbon monoxide
CITY TECH17 citations84
US5601693AFeb 11, 1997
Gas sensor
CITY TECH31 citations83
US5746899AMay 5, 1998
Electrochemical gas sensor
CITY TECH18 citations79
US7534333B2May 19, 2009
Electrochemical gas sensor
CITY TECH12 citations74
US5070721ADec 10, 1991
Flammable gas detection
CITY TECH17 citations72
US4815316AMar 28, 1989
Diffusion measurement
CITY TECH17 citations72
US6993955B1Feb 7, 2006
Gas sensors
CITY TECH10 citations71
USD494879SAug 24, 2004
Gas detector
CITY TECH6 citations71
US5632875AMay 27, 1997
Electrochemical gas sensor assembly
CITY TECH7 citations70
US6395230B1May 28, 2002
Pellistor
CITY TECH13 citations69
US5761952AJun 9, 1998
Electrochemical gas sensor
CITY TECH14 citations65
US7010957B2Mar 14, 2006
Gas sensors with improved resistance to humidity interference
CITY TECH4 citations61
US7195922B1Mar 27, 2007
Allergen detection
CITY TECH3 citations59
USD500256SDec 28, 2004
Gas detector
CITY TECH2 citations58