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Roger J. Hapka
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Columbus, IN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Default open differential control switch
Patent number
9,358,882
Issue date
Jun 7, 2016
Polaris Industries Inc.
Roger J. Hapka
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Default open differential control switch
Patent number
8,827,025
Issue date
Sep 9, 2014
Polaris Industries Inc.
Roger J. Hapka
B60 - VEHICLES IN GENERAL
Information
Patent Grant
All terrain vehicle with multiple steering modes
Patent number
7,316,288
Issue date
Jan 8, 2008
Polaris Industries Inc.
Jeff Bennett
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Controller for steering a vehicle
Patent number
7,278,511
Issue date
Oct 9, 2007
Polaris Industries Inc.
Brett Gass
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
System for controlling combustion engine performance in accordance...
Patent number
6,306,063
Issue date
Oct 23, 2001
Cummins Engine Company, Inc.
Matthew J. Horgan
B60 - VEHICLES IN GENERAL
Information
Patent Grant
System for controlling internal combustion engine performance in ac...
Patent number
5,954,617
Issue date
Sep 21, 1999
Cummins Engine Company, Inc.
Matthew J. Horgan
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Remote control of engine idling time
Patent number
5,619,412
Issue date
Apr 8, 1997
Cummins Engine Company, Inc.
Roger J. Hapka
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Engine protection system
Patent number
5,070,832
Issue date
Dec 10, 1991
Cummins Engine Company, Inc.
Roger J. Hapka
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Cooling system for an internal combustion engine
Patent number
4,771,739
Issue date
Sep 20, 1988
Cummins Engine Company, Inc.
Roger J. Hapka
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents
Information
Patent Application
DEFAULT OPEN DIFFERENTIAL CONTROL SWITCH
Publication number
20140367185
Publication date
Dec 18, 2014
Roger J. Hapka
B60 - VEHICLES IN GENERAL
Information
Patent Application
DEFAULT OPEN DIFFERENTIAL CONTROL SWITCH
Publication number
20120152637
Publication date
Jun 21, 2012
Polaris Industries Inc.
Roger J. Hapka
B60 - VEHICLES IN GENERAL