YK

Yutaka Koizumi

Canon: 83 patents #198 of 19,416Top 2%
Ricoh Company: 25 patents #815 of 9,818Top 9%
YE Yokogawa Electric: 3 patents #261 of 1,441Top 20%
NE Nec: 2 patents #5,510 of 14,502Top 40%
NC Nippon Electric Co.: 1 patents #251 of 792Top 35%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
RI Ricon: 1 patents #20 of 48Top 45%
HC Hitachi Electric Systems Co.: 1 patents #6 of 15Top 40%
Overall (All Time): #10,938 of 4,157,543Top 1%
115
Patents All Time

Issued Patents All Time

Showing 26–50 of 115 patents

Patent #TitleCo-InventorsDate
6705691 Ink-jet printing method and ink-jet printer Toru Yamane 2004-03-16
6659595 Liquid jet recording head Yukuo Yamaguchi, Takeshi Yamakubo, Mikiya Umeyama 2003-12-09
6652062 LIQUID DISCHARGE RECORDING HEAD WITH ORIFICE PLATE HAVING EXTENDED PORTION FIXED TO RECORDING HEAD MAIN BODY, LIQUID DISCHARGE RECORDING APPARATUS HAVING SUCH HEAD, AND METHOD FOR MANUFACTURING SUCH HEAD Mikiya Umeyama, Yukuo Yamaguchi, Hideo Fukazawa, Hiroki Tajima, Nobuyuki Hatasa 2003-11-25
6631982 Liquid ejecting apparatus Toshihiro Sasaki, Akihiro Yamanaka, Hiroyuki Maeda, Akira Goto, Hiroki Tajima +1 more 2003-10-14
6626514 Liquid discharge recording head, method of manufacture therefor, and liquid discharge recording apparatus Hiroki Tajima, Yukuo Yamaguchi, Mikiya Umeyama, Nobuyuki Hatasa 2003-09-30
6603562 Two-dimensional positioning apparatus and method for measuring laser light from the apparatus Yutaka Ono, Shigeru Hashida, Fumio Kaiho, Yasuhito Kosugi, Ryuichi Jimbo +1 more 2003-08-05
6582069 Ink-jet recording head and recording apparatus Tetsuya Ohashi, Hiroyuki Kigami, Satoshi Shimazu 2003-06-24
6530641 Liquid discharge head unit, head cartridge, and method for manufacturing liquid discharge head unit Tetsuya Ohashi, Hiroyuki Kigami, Takayuki Ono, Satoshi Shimazu 2003-03-11
6499828 Manufacturing method of ink jet head, ink jet head manufactured by same and ink jet device having ink jet head Masaru Iketani, Toshio Kashino, Seiichiro Karita, Haruhiko Terai, Kouichi Omata +3 more 2002-12-31
6488365 Liquid discharging head Kiyomitsu Kudo, Sadayuki Sugama, Kiyomi Aono, Tsutomu Abe, Hiroyuki Ishinaga +8 more 2002-12-03
6431681 Recording apparatus, liquid container cartridge and liquid container Nobuyuki Hatasa, Yukuo Yamaguchi, Hideo Fukazawa, Hiroki Tajima, Mikiya Umeyama 2002-08-13
6409300 Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head Yoshiyuki Imanaka, Masaki Inaba, Masami Ikeda, Tsuyoshi Orikasa, Tatsuo Furukawa +13 more 2002-06-25
6406137 Ink-jet print head and production method of ink-jet print head Takeshi Okazaki, Kiyomi Aono, Tsutomu Abe, Kouichi Omata, Hiroki Tajima 2002-06-18
6331051 Ink jet recording head and a method of manufacture therefor Hiroki Tajima, Kiyomi Aono, Tsutomu Abe, Seiichiro Karita, Takeshi Okazaki +2 more 2001-12-18
6328429 Ink jet recording head and ink jet recording apparatus Hiroki Tajima, Kiyomi Aono, Tsutomu Abe, Takeshi Okazaki, Kouichi Omata 2001-12-11
6325482 Method and apparatus for correcting printhead, printhead corrected by this apparatus, and printing apparatus using this printhead Kimiyuki Hayasaki, Koji Yamakawa, Tsuyoshi Orikasa, Hiroyuki Kigami, Hisashi Fukai +2 more 2001-12-04
6168254 Ink jet recording apparatus Seiichiro Karita, Masaki Inaba, Tsuyoshi Orikasa, Toshio Kashino, Shuji Koyama +7 more 2001-01-02
6132036 Ink tank, production process of ink tank and ink-jet printing apparatus Tsutomu Abe, Kiyomi Aono, Seiichiro Karita, Kouichi Omata, Hiroki Tajima 2000-10-17
6116714 Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head Yoshiyuki Imanaka, Masaki Inaba, Masami Ikeda, Tsuyoshi Orikasa, Tatsuo Furukawa +13 more 2000-09-12
6062666 Ink jet recording method and apparatus beginning driving cycle with discharge elements other than at ends of substrates Kouichi Omata, Toshio Kashino, Seiichiro Karita, Haruhiko Terai, Hiroki Tajima +1 more 2000-05-16
6040002 Etching resist composition, pattern forming method making use of the same, printed-wiring board and its production Hiromichi Noguchi, Hiroshi Sugitani, Tadayoshi Inamoto, Kiyomi Aono, Yoshie Nakata 2000-03-21
6000792 Ink jet apparatus provided with an improved recovery mechanism Toshiaki Hirosawa, Jiro Moriyama, Torachika Osada 1999-12-14
5997122 Ink jet recording apparatus capable of performing liquid droplet diameter random variable recording and ink jet recording method using ink for liquid droplet random variable recording Jiro Moriyama, Shoji Koike, Yoshinobu Shimomura, Toshiaki Hirosawa, Torachika Osada +1 more 1999-12-07
5953031 Ink tank with ink container and waste ink container Kouichi Omata, Kiyomi Aono, Tsutomu Abe, Seiichiro Karita, Hiroki Tajima +1 more 1999-09-14
5940957 Laser process for making a filter for an ink jet Akira Goto, Masaki Inaba, Tsuyoshi Orikasa, Toshio Kashino, Seiichiro Karita +7 more 1999-08-24