Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12101034 | Power converter apparatus converting input power having a predetermined voltage into output power having a predetermined output voltage over wide range with higher efficiency | Akira Kato, Motohiko Fujimura, Takehiko Yamakawa, Taiki Nishimoto | 2024-09-24 |
| 12057282 | Electromagnetic relay | Takehiko Yamakawa, Akira Kato | 2024-08-06 |
| 11705260 | Magnetic device including winding and insulators, and power conversion device using the same | Yoshitake Nakagawa, Takehiko Yamakawa, Motohiko Fujimura, Akira Kato | 2023-07-18 |
| 11373828 | Electromagnetic relay and control method thereof | Akira Kato, Takehiko Yamakawa, Motohiko Fujimura | 2022-06-28 |
| 11369011 | High-frequency heating device | Daisuke Hosokawa | 2022-06-21 |
| 9852841 | Coil structure, transformer, and power converter | Akira Kato, Takehiko Yamakawa, Eiji Takahashi | 2017-12-26 |
| 9755539 | AC/DC/AC conversion device with reduced switching noise | Eiji Takahashi | 2017-09-05 |
| 9672974 | Magnetic component and power transfer device | Eiji Takahashi, Takehiko Yamakawa, Yoshitake Nakagawa | 2017-06-06 |
| 9667153 | Switching power supply apparatus for generating control signal for lowering switching frequency of switching devices | Shoichi Hara, Akira Minegishi | 2017-05-30 |
| 9667171 | Switching circuit, power converter, and control method | Shoichi Hara | 2017-05-30 |
| 9660546 | Coil structure and power converter | Akira Kato, Hirohide Ichihashi | 2017-05-23 |
| 8421678 | Antenna apparatus provided with radiation conductor with notched portion | Akira Minegishi | 2013-04-16 |
| 8294531 | Microstrip line provided with conductor section having groove formed to sterically intersect strip conductor | Akira Minegishi | 2012-10-23 |
| 7764861 | Photonic crystal device | Ushio Sangawa, Tomoyasu Fujishima, Hiroshi Kanno | 2010-07-27 |
| 7675387 | Surface acoustic wave device and communication terminal using the same | Kengo Asai, Atsushi Isobe, Kunio Matsumoto, Shinichi Fujiwara | 2010-03-09 |
| 7574098 | Photonic crystal device | Ushio Sangawa, Tomoyasu Fujishima, Hiroshi Kanno | 2009-08-11 |
| 7518462 | Transmission line pair having a plurality of rotational-direction reversal structures | Hiroshi Kanno, Ushio Sangawa, Tomoyasu Fujishima | 2009-04-14 |
| 7499678 | Antenna sharing device and wireless communication terminal using the same | Nobuhiko Shibagaki, Mitsutaka Hikita, Osamu Hikino | 2009-03-03 |
| 7495523 | Differential transmission line having curved section with reduced line width | Hiroshi Kanno, Ushio Sangawa, Tomoyasu Fujishima | 2009-02-24 |
| 7482993 | Variable-directivity antenna | Tomoyasu Fujishima, Ushio Sangawa, Hiroshi Kanno | 2009-01-27 |
| 7466214 | Resonator | Hiroshi Kanno | 2008-12-16 |
| 7429902 | Differential transmission line having a curved region with selected radius of curvature | Hiroshi Kanno, Ushio Sangawa, Tomoyasu Fujishima | 2008-09-30 |
| 7414201 | Transmission line pair | Hiroshi Kanno, Ushio Sangawa, Tomoyasu Fujishima | 2008-08-19 |
| 7415321 | Robot controller | Yasunao Okazaki, Katsuhiko Asai, Masaki Yamamoto | 2008-08-19 |
| 7403080 | Transmission line apparatus having conductive strips coupled by at least one additional capacitance element | Hiroshi Kanno, Ushio Sangawa, Tomoyasu Fujishima | 2008-07-22 |