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

Hua-Ching Tong

RRRead Rite: 25 patents #3 of 240Top 2%
W(Western Digital (Fremont): 5 patents #136 of 473Top 30%
LULehigh University: 1 patents #88 of 228Top 40%
SSStmicroelectronics Sa: 1 patents #2,729 of 4,662Top 60%
Allentown, PA: #33 of 1,150 inventorsTop 3%
Pennsylvania: #1,560 of 74,527 inventorsTop 3%
Overall (All Time): #108,463 of 4,157,543Top 3%
33 Patents All Time

Issued Patents All Time

Showing 26–33 of 33 patents

Patent #TitleCo-InventorsDate
5792547 Low noise magnetic head for high frequency recording Francis H. Liu, Minshen Tan 1998-08-11
5726841 Thin film magnetic head with trimmed pole tips etched by focused ion beam for undershoot reduction Francis H. Liu, Samuel W. Yuan, Vernon M. Riedlin, Jr., Pradeep K. Thayamballi 1998-03-10
5705973 Bias-free symmetric dual spin valve giant magnetoresistance transducer Samuel W. Yuan, Francis H. Liu, Minshen Tan 1998-01-06
5617278 Magnetic head structure with reduction of magnetic domain instability Shih-Cheng Cheng, William C. Cain 1997-04-01
5612098 Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers Minshen Tan, Francis H. Liu, Swie-In Tan 1997-03-18
5529814 Method of producing exchange coupled magnetic thin films with post-deposition annealing Minshen Tan, Swie-In Tan 1996-06-25
5373408 Configuring domain pattern in thin films of magnetic heads Peter G. Bischoff, Johnny C. Chen 1994-12-13
5290416 Unidirectional field generator John J. Newman, Hon-Sian J. Wu 1994-03-01