YF

Yoshitaka Fujinuma

Ricoh Company: 19 patents #1,131 of 9,818Top 15%
HC Hitachi Koki Co.: 11 patents #93 of 888Top 15%
RS Ricoh Printing Systems: 4 patents #32 of 200Top 20%
📍 Ibaraki, MO: #1 of 4 inventorsTop 25%
Overall (All Time): #102,902 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 26–34 of 34 patents

Patent #TitleCo-InventorsDate
6415120 Corona discharging apparatus for use in electrophotographic printing apparatus Hajime Tashiro, Manabu Suzuki, Tomio Sugaya 2002-07-02
6341210 Toner cartridge Kenji Nozawa, Masayuki Ainoya, Yuichiro Suzuki 2002-01-22
6330414 Developing system having a plurality of developing rollers with opposing magnets of same polarity Yasuo Takuma, Tomonari Hokkyou, Masayasu Anzai, Koji Kato 2001-12-11
6285846 Fixing device Takashi Suzuki, Masayuki Ainoya 2001-09-04
6259883 Imaging forming apparatus having a toner exhausting device Hiroshi Tsunoda, Yuichiro Suzuki, Masayuki Ainoya 2001-07-10
D441011 Toner bottle cap Kenji Nozawa, Masayuki Ainoya, Yuichiro Suzuki 2001-04-24
D438892 Photosensitive drum for printer Yuichiro Suzuki, Masayuki Ainoya, Junji Shirakawa 2001-03-13
5923933 Electrophotographic apparatus Masayasu Anzai, Tsuneaki Kawanishi, Hiroyoshi Matsumoto, Yasuo Takuma, Hisao Okada +7 more 1999-07-13
5907755 Developing device Yasuo Takuma, Masayasu Anzai, Hisao Okada 1999-05-25