YK

Yutaka Koizumi

Ricoh Company: 3 patents #18 of 170Top 15%
NC Nippon Electric Co.: 1 patents #15 of 179Top 9%
Overall (1982): #1,373 of 81,411Top 2%
4
Patents 1982

Issued Patents 1982

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4348098 Electrophotographic apparatus 1982-09-07
4338386 Multiple reproduction process and apparatus involves toned electrophotographic image transfer 1982-07-06
4333063 Amplitude equalizer Toshihiko Ryu 1982-06-01
4319832 Toner separation and recovery apparatus Koji Sakamoto, Masayuki Hayashi, Misao Tanzawa 1982-03-16