Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12224797 | Optical wireless communication device and optical wireless communication method | Kazumitsu SAKAMOTO, Yohei Katayama, Kento YOSHIZAWA, Etsushi Yamazaki, Takayuki Mizuno +1 more | 2025-02-11 |
| 12206450 | Phase difference distribution estimation method and phase difference distribution estimation apparatus | Yohei Katayama, Kazumitsu SAKAMOTO, Kento YOSHIZAWA, Hiroyuki Fukumoto, Takuya Ohara +2 more | 2025-01-21 |
| 12206458 | Communication apparatus and optical communication system | Yohei Katayama, Kazumitsu SAKAMOTO, Kento YOSHIZAWA, Hiroyuki Fukumoto, Takuya Ohara +2 more | 2025-01-21 |
| 12149285 | Optical wireless communication system and optical wireless communication method | Kazumitsu SAKAMOTO, Yohei Katayama, Kento YOSHIZAWA, Etsushi Yamazaki, Takayuki Mizuno +1 more | 2024-11-19 |
| 11982956 | Image forming apparatus with control of rotation of rotor of motor that drives roller that winds cleaning web | — | 2024-05-14 |
| 11693344 | Fixing belt unit and fixing device | Junji Ishikawa | 2023-07-04 |
| 9969578 | Sheet feeding apparatus and image forming apparatus | — | 2018-05-15 |
| 9946214 | Control of an environment heater in an imaging forming apparatus | — | 2018-04-17 |
| 9316970 | Image forming apparatus and method for controlling power supply to heater of fixing unit based on resistance value of heater | — | 2016-04-19 |
| 9062363 | Method of production of hot coil for line pipe | Takuya Hara, Kazuaki Tanaka | 2015-06-23 |
| 8971739 | Color misalignment correction pattern detection method in image forming apparatus | — | 2015-03-03 |
| 8775612 | Instruction system, method, and recording control apparatus | Noriyuki Fukuyama, Masanobu Morinaga | 2014-07-08 |
| 8169715 | Variable focal length lens, and focal length adjusting device, and imaging apparatus that use the same | Koji Yoneda, Toshihiro Hirai, Takahumi Ogiwara, Katsuya Fujii | 2012-05-01 |
| 7933081 | Focusing device and imaging device | Akira Yasuda, Toshihiro Hirai | 2011-04-26 |
| 5391699 | Polyester copolymer and a process for the production of the same | Tomohisa Nishikawa, Toshihiko Yotsumoto | 1995-02-21 |
| 5143957 | Solid golf balls reinforced with anhydrous metal salts of .alpha.,.beta.-ethylenically unsaturated carboxylic acids | Takatsugu Hashimoto, Yoshinori Egashira | 1992-09-01 |
| 5093402 | Solid golf balls reinforced with metal salts of .alpha.,.beta.-ethylenically unsaturated carboxylic acids via solution masterbatch | Takatsugu Hashimoto, Yoshinori Egashira | 1992-03-03 |
| 5075415 | Adhesive composition for fibrous materials based on phenol-aminophenol-formaldehyde condensation products | Toshihiro Yotsumoto, Koichi Morita | 1991-12-24 |
| 5039777 | Aniline-resorcin-formaldehyde copolycondensation product | Toshihiro Yotsumoto, Koichi Morita | 1991-08-13 |
| 4980405 | Rubber compositions | Koichi Morita, Yoshiyuki Kumamoto | 1990-12-25 |
| 4950705 | Rubber compositions | Koichi Morita, Yoshiyuki Kumamoto | 1990-08-21 |
| 4940450 | Power transmission system using toothed belt of engine for vehicle | Noriyuki Miyamura, Seizo Iwasa, Hiroshi Asano, Isamu Nagai, Hayato Hamada +2 more | 1990-07-10 |
| 4545416 | Radial tires | Michio Itoh, Takehiro Tsukamoto, Shuichi Watanabe, Seisuke Tomita | 1985-10-08 |