Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
CN

Chiu Ng

IRInternational Rectifier: 21 patents #21 of 432Top 5%
Infineon Technologies Ag: 11 patents #10 of 184Top 6%
UAUS Army: 2 patents #1,508 of 6,974Top 25%
El Segundo, CA: #16 of 672 inventorsTop 3%
California: #13,801 of 386,348 inventorsTop 4%
Overall (All Time): #98,681 of 4,157,543Top 3%
35 Patents All Time

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #TitleCo-InventorsDate
10164078 Bipolar semiconductor device with multi-trench enhancement regions Florin Udrea, Gianluca Camuso, Alice Pei-Shan Hsieh, Yi Tang, Rajeev Krishna Vytla +1 more 2018-12-25
10115812 Semiconductor device having a superjunction structure Florin Udrea, Alice Pei-Shan Hsieh, Gianluca Camuso, Yi Tang, Rajeev Krishna Vytla 2018-10-30
9871128 Bipolar semiconductor device with sub-cathode enhancement regions Florin Udrea, Gianluca Camuso, Alice Pei-Shan Hsieh, Yi Tang, Rajeev Krishna Vytla +1 more 2018-01-16
9859407 IGBT having deep gate trench Yi Tang, Niraj Ranjan 2018-01-02
9831330 Bipolar semiconductor device having a deep charge-balanced structure Florin Udrea, Alice Pei-Shan Hsieh, Gianluca Camuso, Yi Tang, Rajeev Krishna Vytla 2017-11-28
9799725 IGBT having a deep superjunction structure Florin Udrea, Alice Pei-Shan Hsieh, Gianluca Camuso, Yi Tang, Rajeev Krishna Vytla 2017-10-24
9768284 Bipolar semiconductor device having a charge-balanced inter-trench structure Florin Udrea, Alice Pei-Shan Hsieh, Gianluca Camuso, Yi Tang, Rajeev Krishna Vytla 2017-09-19
9685506 IGBT having an inter-trench superjunction structure Florin Udrea, Alice Pei-Shan Hsieh, Gianluca Camuso, Yi Tang, Rajeev Krishna Vytla 2017-06-20
9656288 Dispensing device for conveniently dispensing material 2017-05-23
9496378 IGBT with buried emitter electrode Yi Tang, Niraj Ranjan 2016-11-15
9299819 Deep gate trench IGBT Yi Tang, Niraj Ranjan 2016-03-29
9245985 IGBT with buried emitter electrode Yi Tang, Niraj Ranjan 2016-01-26
8314002 Semiconductor device having increased switching speed Richard Francis 2012-11-20
8067797 Variable threshold trench IGBT with offset emitter contacts Yuan-Heng Chao 2011-11-29
7956419 Trench IGBT with depletion stop layer Richard Francis 2011-06-07
7655977 Trench IGBT for highly capacitive loads Davide Chiola 2010-02-02
7534666 High voltage non punch through IGBT for switch mode power supplies Richard Francis 2009-05-19
7507608 IGBT with amorphous silicon transparent collector Richard Francis, Hamilton Lu, Ranadeep Dutta 2009-03-24
7485920 Process to create buried heavy metal at selected depth Richard Francis 2009-02-03
7335947 Angled implant for shorter trench emitter Richard Francis 2008-02-26
7005702 IGBT with amorphous silicon transparent collector Richard Francis, Hamilton Lu, Ranadeep Dutta 2006-02-28
6919248 Angled implant for shorter trench emitter Richard Francis 2005-07-19
6753580 Diode with weak anode Richard Francis, Fabrizio Ruo Redda 2004-06-22
6707111 Hydrogen implant for buffer zone of punch-through non EPI IGBT Richard Francis 2004-03-16
6683331 Trench IGBT Richard Francis 2004-01-27