Issued Patents All Time
Showing 25 most recent of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12422763 | Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer | Makoto Ishikawa | 2025-09-23 |
| 12386281 | Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer | Makoto Ishikawa | 2025-08-12 |
| 12253825 | Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer | Makoto Ishikawa | 2025-03-18 |
| 12217775 | Magnetoresistance effect element and Heusler alloy | Kazuumi INUBUSHI, Katsuyuki Nakada | 2025-02-04 |
| 12204280 | Carrier, xerographic developer, and carrier production method | Aya Sakuta, Makoto Ishikawa, Hiroki Sawamoto | 2025-01-21 |
| 11769523 | Magnetoresistance effect element and Heusler alloy | Kazuumi INUBUSHI, Katsuyuki Nakada | 2023-09-26 |
| 11422480 | Ferrite carrier core material for electrophotographic developer, ferrite carrier, manufacturing method thereof, and electrophotographic developer using said ferrite | Makoto Ishikawa, Hiroki Sawamoto | 2022-08-23 |
| 11410689 | Magnetoresistance effect element and Heusler alloy | Kazuumi INUBUSHI, Katsuyuki Nakada | 2022-08-09 |
| 11150569 | Ferrite carrier core material for electrophotographic developer, carrier for electrophotographic developer, and developer | Yuzuru YAMASAKI, Takao Sugiura, Takeshi Naito | 2021-10-19 |
| 11099495 | Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, developer, method for producing magnetic core material for electrophotographic developer, method for producing carrier for electrophotographic developer, and method for producing developer | Hiroki Sawamoto | 2021-08-24 |
| 11029618 | Carrier, electrophotographic developer and production method of carrier | Aya Sakuta, Makoto Ishikawa, Hiroki Sawamoto | 2021-06-08 |
| 10996579 | Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer | Hiroki Sawamoto | 2021-05-04 |
| 10996576 | Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer | Hiroki Sawamoto | 2021-05-04 |
| 10969706 | Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer | Hiroki Sawamoto | 2021-04-06 |
| 10754271 | Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer | Hiroki Sawamoto | 2020-08-25 |
| 10248039 | Carrier, electrophotographic developer, and method of manufacturing carrier | Hiroki Sawamoto, Hajime Akiba | 2019-04-02 |
| 10036982 | Carrier and electrophotographic developer using the carrier | Hiroki Sawamoto | 2018-07-31 |
| 9329515 | Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrier | Makoto Ishikawa, Masashi Aoki | 2016-05-03 |
| 9098321 | Method and computer for controlling virtual machine | Naoya Hattori | 2015-08-04 |
| 8541155 | Resin-coated carrier for electrophotographic developer, and electrophotographic developer | Makoto Ishikawa | 2013-09-24 |
| 8073901 | Information update method and information update system | — | 2011-12-06 |
| 8063951 | Information processing apparatus and method, and program | Kenji Tsushio, Yasufumi Suzuki, Chihiro Motono, Simon Currie, Hiroyuki Takahashi | 2011-11-22 |
| 7865537 | File sharing system and file sharing method | Shoji Kodama, Kiyotake Kumazawa, Naoko Iwami | 2011-01-04 |
| 7747810 | Address assigning method, disk drive, and data writing method | Hideki Saga | 2010-06-29 |
| 7624275 | Disk drive, control method thereof and disk-falsification detection method | — | 2009-11-24 |