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Charlie Ketelhohn
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Cedarburg, WI, US
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Patents Grants
last 30 patents
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Patent Grant
Adjusting the sensitivity of a PIR sensor or a doppler radar sensor...
Patent number
8,519,883
Issue date
Aug 27, 2013
Cooper Technologies Company
George Michael Drake
F21 - LIGHTING
Information
Patent Grant
Doppler radar motion detector for an outdoor light fixture
Patent number
8,232,909
Issue date
Jul 31, 2012
Cooper Technologies Company
Scott Kroeger
F21 - LIGHTING
Information
Patent Grant
Capacitance-based fluid level sensor
Patent number
7,475,665
Issue date
Jan 13, 2009
Wacker Neuson Corporation
Charlie Ketelhohn
G01 - MEASURING TESTING
Information
Patent Grant
Accelerometer-based infant movement monitoring and alarm device
Patent number
6,765,489
Issue date
Jul 20, 2004
Milwaukee Electronics Corporation
Charles H. Ketelhohn
G08 - SIGNALLING
Information
Patent Grant
Combination speed limiter and transmission interlock system
Patent number
6,595,897
Issue date
Jul 22, 2003
Briggs & Stratton Corporation
Richard A. Dykstra
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Patents Applications
last 30 patents
Information
Patent Application
Doppler Radar Motion Detector for an Outdoor Light Fixture
Publication number
20120293076
Publication date
Nov 22, 2012
Cooper Technologies Company
George Michael Drake
F21 - LIGHTING
Information
Patent Application
DOPPLER RADAR MOTION DETECTOR FOR AN OUTDOOR LIGHT FIXTURE
Publication number
20100109934
Publication date
May 6, 2010
Cooper Technologies Company
George Michael Drake
F21 - LIGHTING
Information
Patent Application
Capacitance-Based Fluid Level Sensor
Publication number
20070163534
Publication date
Jul 19, 2007
WACKER CORPORATION
Charlie Ketelhohn
G01 - MEASURING TESTING