Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12431824 | Semiconductor device, motor drive system, and control method thereof | Minoru Kurosawa, Takeshi Ohtsuki | 2025-09-30 |
| 11942890 | Semiconductor device, motor drive system, and method of starting motor | Minoru Kurosawa, Takeshi Ohtsuki | 2024-03-26 |
| 11114962 | Semiconductor device, motor drive system, and motor control program | — | 2021-09-07 |
| 10693396 | Semiconductor device, motor driving system, and motor control program | — | 2020-06-23 |
| 10658947 | Semiconductor device, power module, and control method of power conversion device | — | 2020-05-19 |
| 8195070 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2012-06-05 |
| 8068770 | Toner cartridge, image forming apparatus, method of recycling toner cartridge | Takeroh Kurenuma, Fumio Ogata, Seiji Terazawa, Masayuki Yamane, Kenzo Tatsumi +4 more | 2011-11-29 |
| 8018189 | Motor drive apparatus | Masaaki Kato, Masaharu Hoashi, Toshiya Suzuki | 2011-09-13 |
| 8005406 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2011-08-23 |
| 7962069 | Toner container, image forming apparatus, method of recycling toner container | Takeroh Kurenuma, Fumio Ogata, Seiji Terazawa, Masayuki Yamane, Kenzo Tatsumi +4 more | 2011-06-14 |
| 7902775 | Motor driving device | Hiroshi Murakami, Toshiya Suzuki | 2011-03-08 |
| 7835673 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2010-11-16 |
| 7697870 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2010-04-13 |
| 7577379 | Toner container, toner supply device and image forming apparatus | Emi Kita, Takeroh Kurenuma, Kiyonori Tsuda, Masayuki Yamane, Nobuyuki Taguchi +5 more | 2009-08-18 |
| 7522850 | Image forming apparatus, process cartridge, developing unit, and image forming method | Kazuhito Watanabe, Shinji Tamaki, Satoshi Hatori, Tsutomu Katoh, Haruji Mizuishi +2 more | 2009-04-21 |
| 7519317 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2009-04-14 |
| 7493061 | Process cartridge including at least one replaceable member and image forming apparatus | Satoshi Hatori, Kazuhito Watanabe, Shinji Tamaki, Tsutomu Katoh, Haruji Mizuishi +1 more | 2009-02-17 |
| 7480476 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2009-01-20 |
| 7398038 | Image forming apparatus using a toner container and a process cartridge | Kiyonori Tsuda, Hiroshi Hosokawa, Masanori Kawasumi, Ryuta Takeichi, Kazuhiko Umemura +1 more | 2008-07-08 |
| 7321744 | Developer container, developer supplying device, and image forming apparatus | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +7 more | 2008-01-22 |
| 7212767 | Image forming apparatus and process cartridge removably mounted thereto | Hiroshi Hosokawa, Kiyonori Tsuda, Ryuta Takeichi, Yuji Arai, Masanori Kawasumi +1 more | 2007-05-01 |
| 7184691 | Toner container, toner supply device and image forming apparatus | Emi Kita, Takeroh Kurenuma, Kiyonori Tsuda, Masayuki Yamane, Nobuyuki Taguchi +5 more | 2007-02-27 |
| 7176677 | Stationary position detection circuit and motor drive circuit | Masaharu Hoashi, Toshiya Suzuki, Daisuke Suetsugu, Hikaru Nakamura | 2007-02-13 |
| 7158730 | Image forming apparatus, process cartridge, developing unit, and image forming method | Kazuhito Watanabe, Shinji Tamaki, Satoshi Hatori, Tsutomu Katoh, Haruji Mizuishi +2 more | 2007-01-02 |
| 7136610 | Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself | Yuji Arai, Atsushi Sampe, Kiyonori Tsuda, Takeo Suda, Satoshi Hatori +11 more | 2006-11-14 |