Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Yo Chan Son — 40 Patents

General Motors: 40 patents #232 of 18,328Top 2%
Rochester Hills, MI: #29 of 1,754 inventorsTop 2%
Michigan: #1,368 of 86,293 inventorsTop 2%
Overall (All Time): #78,057 of 4,157,543Top 2%
40 Patents All Time
Yo Chan Son has been granted 40 US patents while listed as an inventor at General Motors. The first was granted in 2005 and the most recent in June 2020. Yo Chan Son ranks #78,057 of 4,157,543 US inventors in our database (top 1.9%). Patent records list Yo Chan Son in Rochester Hills, MI, US.

Patents per Year

Patents granted per year, 2005 to 2020Bar chart with a peak of 10 patents in 2012.peak 102005: 1 patents20052009: 1 patents2010: 3 patents20102011: 4 patents2012: 10 patents20122013: 2 patents2014: 1 patents20142015: 3 patents2016: 2 patents20162017: 1 patents2018: 4 patents20182019: 6 patents2020: 2 patents2020

Issued Patents All Time

Showing 26–40 of 40 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8310189 Position sensorless control of permanent magnet motors Nitinkumar R. Patel 2012-11-13 $9,913,000
8269445 Limp home operational mode for an electric vehicle Nitinkumar R. Patel, Peter J. Savagian, Rostam Dehmoobed Nasrabadi 2012-09-18 $10,597,000
8258736 Fail-safe controls for electric traction drive systems Nitinkumar R. Patel, Tim M. Grewe 2012-09-04 $7,757,000
8253360 Vector controlled motor drive system implementing pulse width modulated (PWM) waveforms Steven E. Schulz, Nitinkumar R. Patel 2012-08-28 $5,587,000
8212505 Method and system for creating a vibration in an automobile James M. Nagashima, Steven E. Schulz, Jonas Bereisa 2012-07-03 $6,593,000
8174222 Methods, systems and apparatus for dynamically controlling an electric motor that drives an oil pump Nitinkumar R. Patel 2012-05-08 $10,533,000
8054030 Permanent magnet AC motor systems and control algorithm restart methods Seok-Joo Jang, Rostam Dehmoobed Nasrabadi 2011-11-08 $3,733,000
8018187 Initial polarity detection for permanent magnet motor drives Steven E. Schulz, Constantin C. Stancu 2011-09-13 $8,470,000
7932691 Permanent magnet motor start-up Bon Ho Bae, Michael Milani 2011-04-26 $23,068,000
7923953 Linearity for field weakening in an interior permanent magnet machine Gabriel Gallegos-Lopez, Milun Perisic, Silva Hiti 2011-04-12 $11,212,000
7839108 Electric motor stator winding temperature estimation Nitinkumar R. Patel, Silva Hiti, Steven E. Schulz 2010-11-23
7759886 Linearity for field weakening in an interior permanent magnet machine Gabriel Gallegos-Lopez, Milun Perisic, Silva Hiti 2010-07-20
7755313 Power inverter module thermal management Gabriel Gallegos-Lopez, Silva Hiti, Michael Milani, Milun Perisic 2010-07-13
7615951 Method and system for limiting the operating temperature of an electric motor Silva Hiti 2009-11-10
6894454 Position sensorless control algorithm for AC machine Nitinkumar R. Patel, Steven E. Schulz, James M. Nagashima, Seung Ki Sul, Bon Ho Bae 2005-05-17 $16,808,000