Inventor
LONTKA KAREN D
US12 patents
⚠️ This page may combine multiple inventors who share the name “LONTKA KAREN D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LONTKA KAREN D
7 patentsUS8644792B2Feb 4, 2014
Emergency display for emergency personnel
LONTKA KAREN D14 citations82
US8164440B2Apr 24, 2012
Methods for emergency communication within a fire safety system
LONTKA KAREN D12 citations82
US8149109B2Apr 3, 2012
Mobile emergency device for emergency personnel
LONTKA KAREN D16 citations82
US8446285B2May 21, 2013
Methods and apparatus for controlling and testing a notification appliance circuit
LONTKA KAREN D4 citations60
US8280070B2Oct 2, 2012
Arrangement and method for communicating audio and DC signals
LONTKA KAREN D2 citations60
US8159361B2Apr 17, 2012
Methods and apparatus for providing power to a notification appliance circuit
LONTKA KAREN D5 citations60
US8217798B2Jul 10, 2012
System, converter and method for wide area distribution of supervised emergency audio
LONTKA KAREN D0 citations44
SIEMENS INDUSTRY INC
3 patentsUS9319101B2Apr 19, 2016
System and method for ground fault detection in a transformer isolated communication channel of a network device
SIEMENS INDUSTRY INC76 citations96
US9013980B2Apr 21, 2015
System and method for fail-safe communication across a compromised communication channel of a network device
SIEMENS INDUSTRY INC5 citations71
US8373571B2Feb 12, 2013
Methods and apparatus for controlling a notification appliance circuit
SIEMENS INDUSTRY INC1 citations47