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

John Ko-Jen Chen — 9 Patents

KOKomag: 5 patents #14 of 100Top 15%
Cisco: 3 patents #4,210 of 13,007Top 35%
Monte Sereno, CA: #59 of 229 inventorsTop 30%
California: #66,801 of 386,348 inventorsTop 20%
Overall (All Time): #582,967 of 4,157,543Top 15%
9 Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
7539154 Method and apparatus to detect and break loop configuration Gordon Mackay, James Paul Rivers, Rita Ousterhout, Sean Xiaolu Wang 2009-05-26
7068712 Cable network redundancy architecture Joanna Qun Zang, Feisal Daruwalla, James R. Forster, Guenter E. Roeck, Joseph O'Donnell +1 more 2006-06-27
RE38544 Thin film magnetic alloy having low noise, high coercivity and high squareness Tu Chen, Tsutomu Yamashita, Rajiv Yadav Ranjan, Keith Kadokura, Ting Joseph Yuen 2004-07-06
6431765 Distributed network repeater module and method Gregory L. DeJager, Robert Hastings, Gordon Mackay, Gopakumar Parameswaran, Santanu Sinha +2 more 2002-08-13
6013161 Thin film magnetic alloy having low noise, high coercivity and high squareness Tu Chen, Tsutomu Yamashita, Rajiv Yadav Ranjan, Keith Kadokura, Ting Joseph Yuen 2000-01-11
5908514 Magnetic alloy for improved corrosion resistance and magnetic performance Rajiv Yadav Ranjan, Tu Chen, Tsutomu Yamashita 1999-06-01
5851688 Thin film magnetic alloy having low noise, high coercivity, and high squareness Tu Chen, Tsutomu Yamashita, Rajiv Yadav Ranjan, Keith Kadokura, Ting Joseph Yuen 1998-12-22
5658659 Magnetic alloy and method for manufacturing same Tu Chen, Rajiv Yadav Ranjan, Tsutomu Yamashita, Miaogen Lu, Keith Kadokura +1 more 1997-08-19
5631094 Magnetic alloy for improved corrosion resistance and magnetic performance Rajiv Yadav Ranjan, Tu Chen, Tsutomu Yamashita 1997-05-20