Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Emerson Electric › Michael R. DuHack
MD

Michael R. DuHack — 20 Patents

EEEmerson Electric: 16 patents #46 of 1,374Top 4%
EMEmhart: 2 patents #204 of 310Top 70%
NMNidec Motor: 1 patents #124 of 217Top 60%
Lafayette, IN: #25 of 808 inventorsTop 4%
Indiana: #1,509 of 33,936 inventorsTop 5%
Overall (All Time): #214,803 of 4,157,543Top 6%
20 Patents All Time
Michael R. DuHack has been granted 20 US patents while listed as an inventor at Emerson Electric. The first was granted in 1990 and the most recent in December 2015. Michael R. DuHack ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Michael R. DuHack in Lafayette, IN, US.

Patents per Year

Patents granted per year, 1990 to 2015Bar chart with a peak of 4 patents in 2002.peak 41990: 2 patents19901992: 1 patents1997: 1 patents19971998: 2 patents1999: 2 patents19992000: 1 patents2002: 4 patents20022003: 2 patents2006: 1 patents20062007: 2 patents2008: 1 patents20082015: 1 patents2015

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9217515 Reduced noise valve mechanism Joseph LaBonte 2015-12-22 $321,000
7321833 Fluid flow rate sensor Bernd Zimmermann, Tung-Sheng Yang 2008-01-22 $53,688,000
7222642 Enhanced water valve tube stop Kelly S. Gagne 2007-05-29 $139,584,000
7163590 Method and apparatus for sensing water flow through a dishwasher including a vacuum switch Laurence S. Slocum, Andrew F. Schloot, Michael T. Clouser 2007-01-16 $33,870,000
7032391 Method and device for stirring water during icemaking Dennis D. Tremblay, Laurence S. Slocum 2006-04-25 $26,274,000
6615858 Appliance water valve assembly and associated method Eugene A. Ritter 2003-09-09 $49,048,000
6532758 Water delivery system for refrigerator — 2003-03-18
6460367 Water delivery system for refrigerator — 2002-10-08 $107,141,000
6422258 Snap-and-crimp appliance water valve assembly and associated method for making the same Eugene A. Ritter 2002-07-23 $122,819,000
6412645 Integrated filter and noise suppressor device for a water valve assembly and associated method for operating the same — 2002-07-02 $50,972,000
6378542 Flow control device having a lip seal and compressible bypass pads and associated method for operating an appliance water valve — 2002-04-30 $29,754,000
6076801 Apparatus for improving the seating of an armature for a water valve Steve W. Smock 2000-06-20 $27,488,000
5964447 Water valve assembly having attachment mechanism which prevents a fluid conduit from becoming detached from a valve body Neil E. Grah 1999-10-12 $93,074,000
5921275 Apparatus for reducing noise generated by the flow of water through a water valve David G. Knop 1999-07-13 $45,861,000
5813652 Apparatus for suppressing noise generated by a flow of water through a water valve James W. Richmond 1998-09-29 $35,249,000
5810331 Plastic inlet appliance water valve Steven W. Smock, Neil E. Grah 1998-09-22 $31,474,000
5655750 Plastic inlet appliance water valve Steven W. Smock, Neil E. Grah 1997-08-12 $97,811,000
5154394 Solenoid operated valve with improved flow control means — 1992-10-13 $22,888,000
4967786 Armature for a solenoid operated valve — 1990-11-06
4936337 Armature for a solenoid operated valve — 1990-06-26

Frequent Collaborators

Neil E. Grah3 shared
Steven W. Smock2 shared
Laurence S. Slocum2 shared
Eugene A. Ritter2 shared
Steve W. Smock1 shared
Andrew F. Schloot1 shared

Nearby-Ranked Inventors

Anthony Mertes20
Ed Merjanian20
Arthur J. Higby20
Daniel Rosenberg20
Anthony J. Kuschel20
Mark E. Fauver20
Markus Wintermantel20
Dominik Schnieders20
Christopher P. Roche20