YK

Yoshihiro Katayama

GI Gs Yuasa International: 13 patents #27 of 491Top 6%
CI Cosmo Research Institute: 4 patents #7 of 93Top 8%
CC Cosmo Oil Co.: 4 patents #33 of 229Top 15%
Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
GY Gs Yuasa: 2 patents #19 of 93Top 25%
KT Kabushiki Kaisha Toshiba: 2 patents #9,982 of 21,451Top 50%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
YU Yuasa: 1 patents #36 of 85Top 45%
FI Forestry And Forest Products Research Institute: 1 patents #5 of 53Top 10%
TI Toyota Industries: 1 patents #904 of 1,610Top 60%
NT National Institute Of Advanced Industrial Science And Technology: 1 patents #1,256 of 3,134Top 45%
NT National University Orporation Tokyo University Of Agriculture And Technology: 1 patents #57 of 210Top 30%
AT Agency Of Industrial Science And Technology: 1 patents #568 of 1,778Top 35%
Overall (All Time): #138,602 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
5073797 Toner sealing arrangement for a dry developing device of an electrostatic copier Taizo Ono, Hirotsugu Sakamoto, Toshi Saitoh 1991-12-17
4947211 Developing device Taizo Ono, Toshi Saitoh 1990-08-07
4903634 Developing device Taizo Ono, Hayato Kamada, Hidenori Kunishige 1990-02-27