FK

Fumio Koizumi

KC Konishiroku Photo Industry Co.: 1 patents #532 of 894Top 60%
NS Nippon Steel: 1 patents #2,111 of 4,423Top 50%
Overall (All Time): #2,246,283 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5868817 Process for producing steel by converter Masataka Yano, Yuji Ogawa, Masayuki Arai, Noriyuki Masumitsu, Hideaki Sasaki +5 more 1999-02-09
4693952 Toner for developing electrostatic latent image Takahira Kasuya, Jiro Takahashi 1987-09-15