HK

Hirofumi Koga

OE Omron Tateisi Electronics: 7 patents #22 of 599Top 4%
KM Konica Minolta: 6 patents #610 of 2,718Top 25%
KM Konica Minolta: 4 patents #503 of 1,361Top 40%
PA Panasonic: 3 patents #7,617 of 21,108Top 40%
Overall (All Time): #219,041 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11550313 Equipment element maintenance analysis system and equipment element maintenance analysis method Yuji Nakajima, Hitoshi Komatsu, Manabu Ohuchi, Kazuyuki Yoshidomi, Noritada Kawamoto 2023-01-10
11246250 Equipment element maintenance management system and equipment element maintenance management method Yuji Nakajima, Kazuyuki Yoshidomi, Hitoshi Komatsu, Manabu Ohuchi, Noritada Kawamoto 2022-02-08
11130862 Silicone rubber composition, fixing member, manufacturing method of fixing member, and image forming apparatus including fixing member Hiroyuki Yasukawa, Yoshiyasu Matsumoto 2021-09-28
10943215 Equipment element repair management system and equipment element repair management method Yuji Nakajima, Hitoshi Komatsu, Kazuyuki Yoshidomi, Manabu Ohuchi, Noritada Kawamoto 2021-03-09
10289045 Fixing belt and fixing device and image forming apparatus using the same Izumi MUKOYAMA, Naoko Uemura, Asao Matsushima 2019-05-14
10185260 Fixing belt, fixing device, and image forming apparatus Izumi MUKOYAMA, Naoko Uemura, Asao Matsushima 2019-01-22
10031454 Fixing belt, fixing device, image forming apparatus and image formation method Izumi MUKOYAMA, Go Yamaguchi, Asao Matsushima, Akira Ohira 2018-07-24
9939764 Fixing belt, fixing device, and image forming apparatus Izumi MUKOYAMA, Naoko Uemura 2018-04-10
9811032 Fixing belt, fixing device, and image forming apparatus Izumi MUKOYAMA, Naoko Uemura 2017-11-07
7799500 Image forming method Makoto Kobayashi, Shingo Fujimoto, Takao Yamanouchi, Kazuya Isobe 2010-09-21
7727697 Electrophotographic toner and electrophotographic developer by use thereof Shiro Hirano, Shingo Fujimoto, Takao Yamanouchi, Masaaki Kondo, Junya Onishi 2010-06-01
7700253 Electrophotographic toner Takao Yamanouchi, Shingo Fujimoto, Makoto Kobayashi, Kazuya Isobe 2010-04-20
7682766 Electrophotographic image forming method and image forming apparatus Shingo Fujimoto, Takao Yamanouchi, Masaaki Kondo, Shiro Hirano, Junya Onishi 2010-03-23
4855612 Switching current and a relay device employed therein Katsumi Koyanagi 1989-08-08
4831348 Low profile electromagnetic relay to printed circuit board Shunichi Agatahama, Ryuichi Sato, Hiroyuki Sagawa, Kazushige Matsuoka 1989-05-16
4814944 Mounting structure for surface mounted type component with projection extending down from lower surface thereof and method of mounting a surface mounted type component on a printed circuit board Hiroyuki Sagawa, Shunichi Agatahama, Hideyuki Okumura, Kazushige Matsuoka, Ryuichi Sato 1989-03-21
4772809 Switching circuit and a relay device employed to prevent arcing Katsumi Koyanagi 1988-09-20
4727344 Electromagnetic drive and polarized relay Kozo Maenishi, Shuichi Kashimoto, Sueaki Honda, Kenichi Tsuruyoshi, Takezo Sano 1988-02-23
4626813 Electromagnetic drive and polarized relay Kozo Maenishi, Shuichi Kashimoto, Sueaki Honda, Kenichi Tsuruyoshi, Takezo Sano 1986-12-02
4272745 Electromagnetic relay Takashi Tanaka 1981-06-09