Issued Patents All Time
Showing 25 most recent of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12405679 | Position detection sensor and position detection device | Hikaru Matsuura, Takeru Izumisawa | 2025-09-02 |
| 12340035 | Electronic pen cartridge and electronic pen | Hidetaka Takiguchi | 2025-06-24 |
| 12293038 | Position detection apparatus configured to detect the positions of multiple position indicators, and position detection method | Tomo Asakura | 2025-05-06 |
| 12169602 | Communication system and terminal apparatus | Toshihiko Horie, Katsuhito Obi | 2024-12-17 |
| 12111989 | Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen | Shigeru Yamashita, Toshihiko Horie | 2024-10-08 |
| 12056297 | Electronic pen cartridge and electronic pen | Hidetaka Takiguchi | 2024-08-06 |
| 12001618 | Knock-type electronic pen including first and second position indicators located at different ends of a tubular casing | Daisuke Watanabe, Ryoji Kamiyama | 2024-06-04 |
| 11940301 | Position indicator | — | 2024-03-26 |
| D1001130 | Cartridge for an electronic pen | Ryoji Kamiyama, Toshihiko Horie | 2023-10-10 |
| 11762487 | Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen | Shigeru Yamashita, Toshihiko Horie | 2023-09-19 |
| 11725963 | Position detection sensor and position detection device | Hikaru Matsuura, Takeru Izumisawa | 2023-08-15 |
| 11714498 | Electronic pen core body and electronic pen | Ryoji Kamiyama, Toshihiko Horie, Daisuke Watanabe | 2023-08-01 |
| 11687172 | Electronic pen cartridge and electronic pen | Hidetaka Takiguchi | 2023-06-27 |
| 11669176 | Integrated circuit and electronic pen | Shigeru Yamashita, Toshihiko Horie | 2023-06-06 |
| 11662834 | Electronic erasing device and writing information processing system | Ryoji Kamiyama, Toshihiko Horie, Shigeru Yamashita, Fujii Kosuke | 2023-05-30 |
| 11599220 | Position detection apparatus configured to detect the positions of multiple position indicators, and position detection method | Tomo Asakura | 2023-03-07 |
| D978966 | Cartridge for an electronic pen | Ryoji Kamiyama, Toshihiko Horie | 2023-02-21 |
| D978243 | Cartridge for an electronic pen | Ryoji Kamiyama, Toshihiko Horie | 2023-02-14 |
| 11573649 | Electronic pen core body and electronic pen | Ryoji Kamiyama, Toshihiko Horie, Daisuke Watanabe | 2023-02-07 |
| D968408 | Cartridge for an electronic pen | Ryoji Kamiyama, Toshihiko Horie | 2022-11-01 |
| D966268 | Cartridge for an electronic pen | Ryoji Kamiyama, Toshihiko Horie | 2022-10-11 |
| 11385725 | Electronic erasing device and writing information processing system | Ryoji Kamiyama, Toshihiko Horie, Shigeru Yamashita, Fujii Kosuke | 2022-07-12 |
| 11360584 | Electronic pen | Shigeru Yamashita, Ryoji Kamiyama | 2022-06-14 |
| 11327584 | Integrated circuit and electronic pen | Shigeru Yamashita, Toshihiko Horie | 2022-05-10 |
| D947192 | Cartridge for an electronic pen | Ryoji Kamiyama, Toshihiko Horie | 2022-03-29 |