Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Mao-Min Chen — 107 Patents

HTHeadway Technologies: 81 patents #14 of 309Top 5%
IBM: 23 patents #4,681 of 70,183Top 7%
ASApplied Spintronics: 4 patents #11 of 18Top 65%
MTMagic Technologies: 3 patents #25 of 54Top 50%
Freeport, NY: #1 of 211 inventorsTop 1%
New York: #481 of 115,490 inventorsTop 1%
Overall (All Time): #12,740 of 4,157,543Top 1%
107 Patents All Time

Issued Patents All Time

Showing 51–75 of 107 patents

Patent #TitleCo-InventorsDate
6668443 Process for manufacturing a spin valve recording head Chen-Jung Chien, Chyu-Jiuh Torng, Cherng-Chyi Han, Moris Dovek, Po-Kang Wang 2003-12-30
6663920 Ion implantation method for fabricating magnetoresistive (MR) sensor element Cherng-Chyi Han, Rong Xiao, Po-Kang Wang 2003-12-16
6632474 Robust hard bias/conductor lead structures for future GMR heads Cheng T. Horng, Chen-Jung Chien, Cherng-Chyi Han, Chyu-Jiuh Torng, Ru-Ying Tong 2003-10-14
6608737 Method to make a stitched writer for a giant magneto-resistive head Cherng-Chyi Han, Po-Kang Wang, Moris Dovek, Gene Sandler, Jen-Wei Koo 2003-08-19
6596468 Process to form a flux concentration stitched write head Cherng-Chyi Han, Kochan Ju 2003-07-22
6591480 Process for fabricating a flux concentrating stitched head Pokang Wang, Cherng-Chyi Han 2003-07-15
6583966 Method to make a high data rate stitched writer for a giant magneto-resistive head Cherng-Chyi Han, Chyu-Jiuh Torng 2003-06-24
6556377 Stitched write head design having a sunken shared pole Po-Kang Wang, Cherng-Chyi Han 2003-04-29
6517896 Spin filter bottom spin valve head with continuous spacer exchange bias Cheng T. Horng, Min Li, Ru-Ying Tong 2003-02-11
6504677 Multi-layer stitched write head design for high data rate application Cherng-Chyi Han 2003-01-07
6493926 Bi-layer lift-off process for high track density GMR head Cherng-Chyi Han, Rodney Lee, Pokang Wang 2002-12-17
6496333 Dual stripe magnetoresistive (DSMR) head with co-extensive magnetoresistive (MR)/dielectric/magnetoresistive (MR) stack layer edges Cherng-Chyi Han 2002-12-17
6469874 Method to make a stitched writer for a giant magneto-resistive head Cherng-Chyi Han, Po-Kang Wang, Moris Dovek, Gene Sandler, Jeu-Wei C. Koo 2002-10-22
6469875 Stitched write head design having a sunken shared pole Po-Kang Wang, Cherng-Chyi Han 2002-10-22
6430015 Method of fabrication of striped magnetoresistive (SMR) and dual stripe magnetoresistive (DSMR) heads with anti-parallel exchange configuration Kochan Ju, Cheng T. Horng, Jei-Wei Chang 2002-08-06
6415500 Method to prevent electrostatic discharge for MR/GMR wafer fabrication Cherng-Chyi Han, Jen-Wei Koo, Rodney Lee, Li Zhu, Jei-Wei Chang 2002-07-09
6396671 Ruthenium bias compensation layer for spin valve head and process of manufacturing Cheng T. Horng, Kochan Ju, Min Li, Simon Liao, Ku-Ying Tong 2002-05-28
6393692 Method of manufacture of a composite shared pole design for magnetoresistive merged heads Kochan Ju, Cherng-Chyi Han, Po-Kang Wang, Chun-Hung Liu, Jei-Wei Chang 2002-05-28
6383574 Ion implantation method for fabricating magnetoresistive (MR) sensor element Cherng-Chyi Han, Rong Xiao, Po-Kang Wang 2002-05-07
6373667 Single stripe magnetoresistive (MR) head Cherng-Chyi Han, Cheng T. Horng, Po-Kang Wang, Chyu-Jiuh Torng, Kochan Ju +1 more 2002-04-16
6324037 Magnetically stable spin-valve sensor Li Zhu, Yimin Guo 2001-11-27
6306311 Method to make a high data rate stitched writer for a giant magneto-resistive head Cherng-Chyi Han, Chyu-Jiuh Torng 2001-10-23
6307721 Thin read gap magnetoresistive (MR) sensor element and method for fabrication thereof Cherng-Chyi Han, Cheng T. Horng 2001-10-23
6292336 Giant magnetoresistive (GMR) sensor element with enhanced magnetoresistive (MR) coefficient Cheng T. Horng, Ru-Ying Tong, Kochan Ju, Jei-Wei Chang, Simon Liao 2001-09-18
6287476 Electrochemical method to improve MR reader edge definition and device reliability Kochan Ju, Shou-Chen Kao, Cherng-Chyi Han, Jei-Wei Chang 2001-09-11