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USPTO Patent Rankings Data through Sept 30, 2025
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David Kung — 3 Patents in 2018

PIPower Integrations: 3 patents #10 of 46Top 25%
Foster City, CA: #52 of 463 inventorsTop 15%
California: #7,478 of 60,411 inventorsTop 15%
Overall (2018): #78,854 of 503,207Top 20%
3 Patents 2018

Issued Patents 2018

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10153687 Method and apparatus for implementing a power converter input terminal voltage discharge circuit Balu Balakrishnan, Raymond Kenneth Orr, David Michael Hugh Matthews 2018-12-11
9985542 Controller IC with zero-crossing detector and capacitor discharge switching element Leif Lund 2018-05-29
9929656 Power converter using multiple controllers David Michael Hugh Matthews, Balu Balakrishnan 2018-03-27