Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12142840 | Antenna device | Keishi Kosaka, Hiroshi Toyao | 2024-11-12 |
| 11862877 | Antenna, board and communication device | Keishi Kosaka, Hiroshi Toyao, Yasuhiko Matsunaga | 2024-01-02 |
| 11843159 | Split ring resonator and communication device | Keishi Kosaka, Yasuhiko Matsunaga, Hiroshi Toyao | 2023-12-12 |
| D976883 | Antenna | Mariko Koyama, Keishi Kosaka, Yasuhiko Matsunaga, Hiroshi Toyao, Takeshi Ebisawa +1 more | 2023-01-31 |
| D976884 | Antenna | Mariko Koyama, Keishi Kosaka, Hiroshi Toyao, Yasuhiko Matsunaga, Osamu Hashiguchi +1 more | 2023-01-31 |
| 11552399 | Split-ring resonator, board and connector | Keishi Kosaka, Hiroshi Toyao, Yasuhiko Matsunaga | 2023-01-10 |
| 11545755 | Conductor, antenna, and communication device | Hiroshi Toyao, Keishi Kosaka | 2023-01-03 |
| 11431098 | Phase control device, antenna system, and phase control method | Mingqi Wu, Keishi Kosaka | 2022-08-30 |
| 11245195 | Phase control plate | Yoshiaki Kasahara, Hiroshi Toyao, Keishi Kosaka, Mingqi Wu | 2022-02-08 |
| 11095038 | Polarization control plate | Yoshiaki Kasahara, Hiroshi Toyao, Keishi Kosaka, Mingqi Wu | 2021-08-17 |
| D927468 | Antenna | Keishi Kosaka, Yasuhiko Matsunaga, Hiroshi Toyao, Osamu Hashiguchi | 2021-08-10 |
| D926736 | Antenna | Keishi Kosaka, Yasuhiko Matsunaga, Hiroshi Toyao, Osamu Hashiguchi | 2021-08-03 |
| 10930989 | Structural body, laminated structure of structural body, and antenna structure | Takahide YOSHIDA, Hiroshi Toyao | 2021-02-23 |
| 10411351 | Antenna and wireless communication device | Tomoya Kaneko, Hiroshi Toyao, Keishi Kosaka | 2019-09-10 |
| 9225049 | Noise suppression structure | Koichiro Nakase | 2015-12-29 |
| 8760117 | Portable communication apparatus | — | 2014-06-24 |
| 8379408 | Electromagnetic shield structure, wireless device using the structure, and method of manufacturing electromagnetic shield | — | 2013-02-19 |
| 8200297 | Cellular phone | Yukio Yokoyama, Shinya Nakamura, Takuya Kojima | 2012-06-12 |
| 7994753 | Portable communication apparatus and a battery pack | — | 2011-08-09 |
| 7990747 | Semiconductor chip and semiconductor device | Toshihide Kuriyama, Hideki Sasaki, Muneo Fukaishi | 2011-08-02 |
| 7504837 | Electrical characteristics measurement method and electrical characteristics measurement device | Naoya Tamaki | 2009-03-17 |
| 7164898 | Wireless portable device | Toshihide Kuriyama | 2007-01-16 |
| 7162284 | Mobile phone, analysis device included therein, and analysis method | Naoki Kobayashi | 2007-01-09 |
| 7142817 | Portable telephone | — | 2006-11-28 |
| 7031744 | Compact cellular phone | Toshihide Kuriyama | 2006-04-18 |