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 76–100 of 107 patents

Patent #TitleCo-InventorsDate
6274025 Chemical approach to develop lift-off photoresist structure and passivate MR sensor Jei-Wei Chang, Shou-Chen Kao, Cherng-Chyi Han, Kochan Ju 2001-08-14
6243939 High ion beam etch selectivity for partial pole trim application Cherng-Chyi Han, Cheng Wu, Jei-Wei Chang 2001-06-12
6204071 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 2001-03-20
6129957 Method of forming a second antiferromagnetic exchange-coupling layer for magnetoresistive (MR) and giant MR (GMR) applications Rongfu Xiao, Chyu-Jiuh Torng, Tai Min, Hui-Chuan Wang, Cherng-Chyi Han +1 more 2000-10-10
6103136 Method for forming a soft adjacent layer (SAL) magnetoresistive (MR) sensor element with transversely magnetically biased soft adjacent layer (SAL) Cherng-Chyi Han, Cheng T. Horng, Po-Kang Wang, Chyu-Jiuh Torng, Kochan Ju 2000-08-15
6091589 Soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL) Cherng-Chyi Han, Chien-Li Lin, Kochan Ju, Cheng T. Horng 2000-07-18
6007731 Soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL) Cherng-Chyi Han, Kochan Ju 1999-12-28
5985162 Method for forming soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL) Cherng-Chyi Han, Kochan Ju 1999-11-16
5920980 Method of making a soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL) Cherng-Chyi Han, Chien-Li Lin, Kochan Ju, Cheng T. Horng 1999-07-13
5864450 NI45FE55 metal-in-gap thin film magnetic head Neil Leslie Robertson 1999-01-26
5843521 Photoresist frame plated magnetic transducer pole layer employing high magnetic permeability seed layer Kochan Ju, Yimin Guo 1998-12-01
5812350 Metal-in-gap thin film magnetic head employing Ni.sub.45 Fe.sub.55 Neil Leslie Robertson 1998-09-22
5802700 Method of making a planarized thin film magnetic write head with submicron trackwidth Kochan Ju, Neil Leslie Robertson, Hugo Alberto Emilio Santini 1998-09-08
5783460 Method of making self-aligned dual stripe magnetoresistive (DRMR) head for high density recording Cherng-Chyi Han 1998-07-21
5668523 Magnetoresistive sensor employing an exchange-bias enhancing layer Kenneth Ting-Yuan Kung, Ching Hwa Tsang 1997-09-16
5668687 Magnetoresistive sensor employing an exchange-bias enhancing layer with a variable-composition transition region Kenneth Ting-Yuan Kung, Ching Hwa Tsang 1997-09-16
5664316 Method of manufacturing magnetoresistive read transducer having a contiguous longitudinal bias layer Robert E. Fontana, Jr., Mohamad Towfik Krounbi, Kenneth Ting-Yuan Kung, James H. Lee, Jyh-Shiliey Jerry Lo +2 more 1997-09-09
5652687 Planarized thin film magnetic write head with submicron trackwidth Kochan Ju, Neil Leslie Robertson, Hugo Alberto Emilio Santini 1997-07-29
5617277 Magnetoresistive read head with back filled gap insulation layers Mohamad Towfik Krounbi 1997-04-01
5606478 Ni.sub.45 Fe.sub.55 metal-in-gap thin film magnetic head Neil Leslie Robertson 1997-02-25
5491600 Multi-layer conductor leads in a magnetoresistive head Mary Kathryn Gutberlet, Mohamad Towfik Krounbi, Jacqueline K. Latimer, Mustafa Pinarbasi 1996-02-13
5488528 Pole tip structure for thin film magnetic heads Kochan Ju, Neil Leslie Robertson, Po-Kang Wang 1996-01-30
5452165 Close packed magnetic head linear array Kochan Ju, Mohamad Towfik Krounbi, Denny Tang, Po-Kang Wang 1995-09-19
5393376 Method of making pole tip structure for thin film magnetic heads Kochan Ju, Neil Leslie Robertson, Po-Kang Wang 1995-02-28
5344669 Method of manufacture for an improved magnetoresistive read transducer Ching Hwa Tsang 1994-09-06