YS

Yoshihiro Sakai

Ricoh Company: 34 patents #505 of 9,818Top 6%
Fujitsu Limited: 6 patents #5,180 of 24,456Top 25%
NC Nhk Spring Co.: 4 patents #192 of 1,116Top 20%
BL Bridgestone Tire Company Limited: 3 patents #79 of 438Top 20%
KA Kao: 3 patents #1,053 of 3,221Top 35%
YE Yaskawa Electric: 2 patents #368 of 1,006Top 40%
NE Nec: 2 patents #5,510 of 14,502Top 40%
FC Fuji Electric Co.: 2 patents #952 of 2,643Top 40%
UN Unknown: 2 patents #12,644 of 83,584Top 20%
JC Janome Sewing Machine Co.: 2 patents #82 of 229Top 40%
SO Sony: 2 patents #12,963 of 25,231Top 55%
KK Kanto Kagaku: 1 patents #73 of 181Top 45%
Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%
MC Mitsui Chemicals: 1 patents #1,270 of 2,279Top 60%
TO Tokuyama: 1 patents #280 of 562Top 50%
📍 Hachioji, MO: #2 of 5 inventorsTop 40%
Overall (All Time): #32,683 of 4,157,543Top 1%
66
Patents All Time

Issued Patents All Time

Showing 26–50 of 66 patents

Patent #TitleCo-InventorsDate
6057869 Image forming apparatus for fixing a toner image at a first speed or at a second speed Yasunori Kawaishi, Kenichi Mizuma, Hideya Furuta, Leo Munakata, Hideki Kamiyama +1 more 2000-05-02
5999367 Cramp mechanism of a magnetic disk device 1999-12-07
5937232 Image forming apparatus with display device for displaying before and after image processing data Kazushige Taguchi, Yutaka Hasegawa 1999-08-10
5926670 Image forming apparatus cleaning an intermediate transfer member carrying a concurrently existing plurality of toner image pages Hideya Furuta, Reo Munakata 1999-07-20
5911899 Corrosion-proof transparent heater panels and preparation process thereof Masaaki Yoshikai, Koichi Takahashi, Masato Koyama, Yuichiro Harada, Akemi Nakajima +1 more 1999-06-15
5828811 Speech signal coding system wherein non-periodic component feedback to periodic excitation signal source is adaptively reduced Tomohiko Taniguchi, Yasuji Ohta, Yoshinori Tanaka, Hideaki Kurihara 1998-10-27
5825398 Image forming apparatus using a synchronized transfer medium driver Hideya Furuta, Kazushige Taguchi, Mitsuru Mamizuka 1998-10-20
5819143 Color image forming apparatus and method Yutaka Hasegawa, Kazushige Taguchi 1998-10-06
5804518 Absorbent articles Katsushi Maeda, Yoshiaki Kumamoto, Shingo Odajima 1998-09-08
5631691 Image forming apparatus Hideya Furuta, Kazushige Taguchi, Mitsuru Mamizuka 1997-05-20
5612766 Device for regenerating printed sheet-like recording medium Toru Iida, Michihito Ohashi, Shin-ichi Kuramoto, Shunichi Chiba, Yasuo Asahina +1 more 1997-03-18
5545381 Device for regenerating printed sheet-like recording medium Toru Iida, Michihito Ohashi, Shin-ichi Kuramoto, Shunichi Chiba, Yasuo Asahina +1 more 1996-08-13
5479502 Speaking apparatus having handfree conversation function Juro Ohga, Hiroyuki Masuda, Kensaku Fujii 1995-12-26
5426549 Magnetic head positioning mechanism having electrical wiring plated thereupon 1995-06-20
5325461 Speech signal coding and decoding system transmitting allowance range information Yoshinori Tanaka, Yasuko Shirai, Tomohiko Taniguchi, Hideaki Kurihara 1994-06-28
5323486 Speech coding system having codebook storing differential vectors between each two adjoining code vectors Tomohiko Taniguchi, Mark A. Johnson, Yasuji Ohta, Hideaki Kurihara, Yoshinori Tanaka 1994-06-21
5321475 Color image forming apparatus which accelerates or decelerates the developing sleeves at a constant rate Yoshimine Horiuchi, Hideya Furuta 1994-06-14
5237562 Echo path transition detection Kensaku Fujii, Juro Ohga, Hiroyuki Masuda 1993-08-17
5160969 Image forming apparatus having a separate black developer stored for a color image Kenichi Mizuma, Hideya Furuta, Nobuo Kasahara, Noriyuki Kimura, Shinju Nagatsuna +6 more 1992-11-03
5135475 Applicator for the use of sanitary goods such as a tampon, etc. Takashi Nakanishi, Yasushi Koizumi, Masayuki Kuboi, Yasushi Nakafukushima, Yoshinori Takahashi +1 more 1992-08-04
5121170 Device for transporting sheet members using an alternating voltage Kazunori Bannai, Noriyuki Kimura, Hideya Furuta, Kenichi Mizuma, Katsuo Sakai +2 more 1992-06-09
4951269 Echo canceller with short processing delay and decreased multiplication number Fumio Amano, Mohammad R. Asharif, Shigeyuki Unagami 1990-08-21
4933727 Color recording apparatus Kenichi Mizuma, Yutaka Koizumi, Hideya Furuta, Mitsuru Mamizuka, Katsuo Sakai +3 more 1990-06-12
4922301 Rotary multicolor developing apparatus Shunji Katoh, Noriyuki Kimura, Sigekazu Enoki 1990-05-01
4796050 Mechanism for driving photosensitive drums Hideya Furuta, Mitsuru Mamizuka, Fumitaka Fujieda 1989-01-03