Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331260 | Ashless additive composition | William R. Ruhe, Jr., Seyedeh Mahboobeh Hosseini | 2025-06-17 |
| 12291686 | Lubricating oil compositions for automatic transmissions | Koichi Kubo, Naoya Sasaki, Takahiro Nakagawa, Satoshi Ohta | 2025-05-06 |
| 11420665 | Height adjusting structure for casing, and accessory device for image forming apparatus | Minoru TOKONAMI | 2022-08-23 |
| 11377320 | Relay conveyance device, image forming system, combination of image forming system, and sheet conveyance device | Sachio Izumichi, Masayuki Kakuta, Risa Hibino, Seiji Okada | 2022-07-05 |
| 11370625 | Sheet conveying device, relay conveyance device and image forming system | Seiji Okada, Sachio Izumichi, Masayuki Kakuta, Risa Hibino | 2022-06-28 |
| 10919720 | Sheet conveyance unit and sheet conveyance system including same | Masayuki Kakuta, Sachio Izumichi, Seiji Okada, Risa Hibino | 2021-02-16 |
| 10604719 | Lubricating oils for automatic transmissions | Koichi Kubo, Takahiro Nakagawa, Naoya Sasaki, Satoshi Ohta | 2020-03-31 |
| 10336563 | Sheet feeding apparatus including sheet storage unit which can be pushed into or pulled out of apparatus body, and image forming apparatus | — | 2019-07-02 |
| 9874841 | Fixing device that stably ensures clearance between separating member and fixing roller, and image forming apparatus that includes the same | Masaru Takagi | 2018-01-23 |
| 9400467 | Image forming apparatus | Shota Onishi | 2016-07-26 |
| 9372454 | Fixing device comprising heat insulating member interposed between rotating member and bearing and rotated around rotation axis and image forming apparatus including the same | Ryo Matsuyama, Tomohiko Yamakawa, Masaru Takagi, Masahiro Ueno | 2016-06-21 |
| 8818231 | Image forming apparatus | Kazuya Yamashita | 2014-08-26 |
| 8497232 | Friction modifier and transmission oil | Kedar Shanker Shrestha, Michio Shiga, Takahiro Nakagawa | 2013-07-30 |
| 7918452 | Sheet width aligning device, sheet transport device and image forming apparatus | — | 2011-04-05 |
| 7823874 | Paper feeder | — | 2010-11-02 |
| 7681879 | Sheet feeder and image forming apparatus | — | 2010-03-23 |
| 6739778 | Sheet transport device | Hideaki Kimata, Mitsuhiro Shibata, Tsuyoshi Koyanagi, Yuzo Onishi | 2004-05-25 |
| 6650862 | Image forming apparatus having sheet separator and sheet separator for use in image forming apparatus | Kuniaki Nakano, Eiji Nakajima | 2003-11-18 |
| 6595511 | Paper feeder | Mitsuhiro Goda, Masaki Higashiyama, Kiyonori Yamamoto | 2003-07-22 |
| 6543759 | Paper feeder for use in image forming apparatus | Yoshihiro Yamaguchi, Nobuyuki Kashiwagi, Kiyonori Yamamoto, Masaki Higashiyama | 2003-04-08 |
| 6523821 | Paper feeder apparatus for use with image forming apparatus | Nobuyuki Kashiwagi, Yasuyuki Hirai, Yoshihiro Yamaguchi, Yukio Hashimoto, Masaki Higashiyama | 2003-02-25 |
| 6412769 | Paper feeder | Mitsuhiro Goda, Masaki Higashiyama, Kiyonori Yamamoto | 2002-07-02 |
| 5923436 | Facsimile machine | — | 1999-07-13 |
| 5749035 | Image transferred sheet conveying guide for use in an image forming apparatus | Keiji Ban, Tetsuro Tomoe, Hiroaki Tsuchiya, Osamu Yoshimura, Shinichi Tanaka | 1998-05-05 |
| 5617193 | Image transferred sheet conveying guide for use in an image forming apparatus | Keiji Ban, Tetsuro Tomoe, Hiroaki Tsuchiya, Osamu Yoshimura, Shinichi Tanaka | 1997-04-01 |