Kazumasa Igarashi

ND Nitto Denko: 16 patents #187 of 2,479Top 8%

TL Tokyo Electron Limited: 7 patents #1,084 of 5,567Top 20%

SO Sony: 3 patents #10,744 of 25,231Top 45%

NC Nitto Electric Industrial Co.: 2 patents #63 of 298Top 25%

NE Nec: 2 patents #5,510 of 14,502Top 40%

U.S. Philips: 1 patents #4,133 of 8,851Top 50%

HI Hitachi: 1 patents #17,742 of 28,497Top 65%

📍 Ibaraki, JP: #260 of 6,779 inventorsTop 4%

Overall (All Time): #151,701 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #	Title	Co-Inventors	Date
4499252	Process for producing polyimide precursor	Katsuhiko Yamaguchi, Munekazu Tanaka	1985-02-12