TO

Tsutomu Onuma

Canon: 23 patents #2,685 of 19,416Top 15%
HI Hitachi: 8 patents #5,191 of 28,497Top 20%
Overall (All Time): #119,765 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 26–31 of 31 patents

Patent #TitleCo-InventorsDate
5605778 Toner with wax component for developing electrostatic image Satoshi Matsunaga, Manabu Ohno, Minoru Shimojo 1997-02-25
5601411 Stainless steel type 13Cr5Ni having high toughness, and usage the same Kenichi Usami, Hiroshi Takayasu, Makoto Kanda, Masao Kawakami, Fumio Sakamoto +2 more 1997-02-11
5384224 Toner for developing electrostatic image Hirohide Tanikawa, Hiroaki Kawakami, Masatsugu Fujiwara, masashi Jinbo 1995-01-24
5364722 Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax Hirohide Tanikawa, Hiroaki Kawakami, Masatsugu Fujiwara, masashi Jinbo 1994-11-15
4499158 Welded structural member having high erosion resistance Fumio Hataya 1985-02-12
4348131 Welded structure having improved mechanical strength and process for making same Shizuka Shimanuki, Toshimi Matsumoto, Hiroshi Sato, Seishin Kirihara 1982-09-07