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USPTO Patent Rankings Data through Sept 30, 2025
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Eiji Tohyama

HIHitachi: 1 patents #17,742 of 28,497Top 65%
Ibaraki, JP: #4,343 of 6,779 inventorsTop 65%
Overall (All Time): #3,833,249 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5245528 Process control apparatus and method for adjustment of operating parameters of controller of the process control apparatus Tadayoshi Saito, Kohji Tachibana, Susumu Takahashi, Nobuyuki Yokokawa, Masahide Nomura +3 more 1993-09-14