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USPTO Patent Rankings Data through Dec 31, 2025
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Daniel P. Grenn — 24 Patents

General Motors: 24 patents #517 of 18,328Top 3%
ESElectric Data Systems: 1 patents #102 of 419Top 25%
Cadillac, MI: #6 of 282 inventorsTop 3%
Michigan: #3,104 of 86,293 inventorsTop 4%
Overall (All Time): #168,038 of 4,157,543Top 5%
24 Patents All Time
Daniel P. Grenn has been granted 24 US patents while listed as an inventor at General Motors. The first was granted in 1988 and the most recent in April 2021. Daniel P. Grenn ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Daniel P. Grenn in Cadillac, MI, US.

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10981557 Battery pack balancing systems and control logic for multi-pack electric-drive motor vehicles Shaochun Ye, Shifang Li, Russell K. Steele, Garrett M. Seeman 2021-04-20 $26,620,000
10124679 Method and apparatus for recharging an energy storage device on a vehicle Andrew M. Zettel, Larry T. Nitz, Andrew J. Farah, Matthew S. Stout 2018-11-13 $12,451,000
10106042 Methods of operating contactors in high voltage circuits of vehicles David J. Mifsud, Sara Safaeian 2018-10-23 $8,690,000
10090125 Methods of determining the order of operating contactors in high voltage circuits David J. Mifsud, Sara Safaeian 2018-10-02 $11,078,000
9830751 System and method for clearing a readiness bit when a control module of a vehicle is reprogrammed 2017-11-28 $7,191,000
9612289 Detection diagnostic for communication loss between a battery system manager controller and a plurality of battery cell sensing boards Voytek A. Novak, Vivekananda Shripathy, Andrew C. Baughman 2017-04-04 $16,417,000
9533549 System and method for controlling heating modes for hybrid electric vehicle (HEV) Kathy D. Rose, Richard A. Marsh, Andrew J. Farah 2017-01-03 $11,117,000
9428073 System and method of monitoring a performance level of a battery Andrew C. Baughman, Andrew M. Zettel 2016-08-30 $9,612,000
9283947 System and method for determining battery capacity in an electric vehicle Joseph Bisbing 2016-03-15 $9,148,000
9217765 Method and system for isolating voltage sensor and contactor faults in an electrical system Walter M. Lazar, II 2015-12-22 $10,959,000
9047722 Vehicle location and fault diagnostic systems and methods Jeanette C. Kurnik 2015-06-02 $12,203,000
8838330 Diagnostics for smart sensors of vehicles Jeffrey S. Richards, Voytek A. Novak 2014-09-16 $10,320,000
8688318 DC converter diagnostics for vehicles Jeffrey S. Richards, Voytek A. Novak 2014-04-01 $10,801,000
8670894 Control system and method for sensor signal out of range detection Wenbo Wang, John F. Van Gilder, Michael J. Lucido, Ian J. MacEwen, Hamid M. Esfahan 2014-03-11 $12,576,000
8600605 Distributed diagnostics architecture Marek L. Wilmanowicz, Aniket Kothari, Leonard G. Wozniak, Rick H. Schroeder, Andrew M. Zettel +4 more 2013-12-03 $9,458,000
8055400 Control system and method for filtering dependent diagnostic trouble codes 2011-11-08 $3,733,000
8041478 Securing and diagnosing the vehicle speed input and direction for torque control systems Joseph M. Stempnik, Richard B. Jess, Tracey A. Bagley-Reed, Ronald W. Van Diepen, Mark H. Costin +3 more 2011-10-18 $7,998,000
7826963 Diagnostic system for spark ignition direct injection system control circuits Wenbo Wang, Mark D. Carr, Michael J. Lucido, Jon C. Miller, John F. Van Gilder +2 more 2010-11-02
7359774 Telematic service system and method 2008-04-15 $19,430,000
7069911 Apparatus and methods for protecting a catalytic converter from misfire Ronald J. Kubani, Vincent A. White 2006-07-04
6531872 Ignition-off timer diagnostic Mark D. Carr 2003-03-11
6386021 Oxygen sensor heater service bay test Mark D. Carr, Jerry L. Brink 2002-05-14
5345817 Misfire detection in internal combustion engines Ronald J. Kubani 1994-09-13
4768480 Engine with spark ignition operation through the oil pressure switch after fuel shutoff Gary J. Wallo 1988-09-06