Hirthe; Richard W.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hirthe; Richard W..The latest application filed is for "methods for determining fluid properties".

Company Profile

0.8.7

Hirthe; Richard W. - Milwaukee WI

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Methods for Determining Fluid Properties App 20090115436 - Koehler, III; Charles J. ; et al.	2009-05-07
Sample Cell for Hand-Held Impedance Spectroscopy Device App 20090115434 - Hirthe; Richard W. ; et al.	2009-05-07
Fluid condition monitoring using broad spectrum impedance spectroscopy App 20060155485 - Koehler; Charles J. ; et al.	2006-07-13
Fluid condition monitoring using broad spectrum impedance spectroscopy Grant 7,043,372 - Koehler , et al. May 9, 2	2006-05-09
Detection of coolant contamination in lubricating fluids Grant 6,989,680 - Sosnowski , et al. January 24, 2	2006-01-24
Detection of coolant contamination in lubricating fluids App 20050184733 - Sosnowski, David R. ; et al.	2005-08-25
Fluid condition monitoring using broad spectrum impedance spectroscopy App 20050110503 - Koehler, Charles J. ; et al.	2005-05-26
Monitoring automatic transmission fluid condition in real time Grant 6,850,865 - Hirthe , et al. February 1, 2	2005-02-01
Detecting Soot During Real Time Operation In Diesel Engine Lubricant App 20050021216 - Koehler, Charles J. ; et al.	2005-01-27
Method of determining the fluid condition of diesel engine lubricant during real time operation Grant 6,844,745 - Schachameyer , et al. January 18, 2	2005-01-18
Detecting soot during real time operation in diesel engine lubricant Grant 6,839,620 - Koehler , et al. January 4, 2	2005-01-04
Monitoring automatic transmission fluid condition in real time App 20040117147 - Hirthe, Richard W. ; et al.	2004-06-17
Monitoring fluid condition with a spiral electrode configuration Grant 6,380,746 - Polczynski , et al. April 30, 2	2002-04-30
Monitoring fluid condition through an aperture Grant 6,377,052 - McGinnis , et al. April 23, 2	2002-04-23
Fluid condition monitor Grant 6,278,281 - Bauer , et al. August 21, 2	2001-08-21

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