Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12400783 | Transformer including first and second windings, and first and second cores, and having structure for preventing core cracking | Hiromu Matsumoto, Susumu Nakamura, Yutaka Miyamoto | 2025-08-26 |
| 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, Kazuyuki Sakiyama, Taiki Nishimoto | 2024-09-24 |
| 12057282 | Electromagnetic relay | Kazuyuki Sakiyama, Akira Kato | 2024-08-06 |
| 11705260 | Magnetic device including winding and insulators, and power conversion device using the same | Yoshitake Nakagawa, Motohiko Fujimura, Akira Kato, Kazuyuki Sakiyama | 2023-07-18 |
| 11373828 | Electromagnetic relay and control method thereof | Akira Kato, Kazuyuki Sakiyama, Motohiko Fujimura | 2022-06-28 |
| 10186977 | Resonant power converter | Masahiro Yamaoka, Motohiko Fujimura | 2019-01-22 |
| 9852841 | Coil structure, transformer, and power converter | Kazuyuki Sakiyama, Akira Kato, Eiji Takahashi | 2017-12-26 |
| 9705409 | Equations for an LLC converter having increased power output capabilities | Masahiro Yamaoka, Akira Kato | 2017-07-11 |
| 9672974 | Magnetic component and power transfer device | Kazuyuki Sakiyama, Eiji Takahashi, Yoshitake Nakagawa | 2017-06-06 |
| 9407172 | Vibration power generator | Yasuyuki Naito, Keiji Onishi, Kunihiko Nakamura, Hiroshi Nakatsuka, Michael Renaud +1 more | 2016-08-02 |
| 8698257 | Resonator and production method thereof | Tomohide Kamiyama, Tomohiro Iwasaki, Kunihiko Nakamura, Keiji Onishi | 2014-04-15 |
| 8570112 | Oscillator with MEMS resonator | Tomohiro Iwasaki, Kunihiko Nakamura, Keiji Onishi | 2013-10-29 |
| 8525605 | Oscillator | Kunihiko Nakamura, Keiji Onishi | 2013-09-03 |
| 8516905 | MEMS pressure sensor | Kunihiko Nakamura, Tomohiro Iwasaki, Keiji Onishi | 2013-08-27 |
| 8306499 | High-frequency filter | Toshiyuki Okajima, Hiroshi Nakatsuka, Keiji Onishi | 2012-11-06 |
| 8289103 | Filter device having attenuation poles | Toshiyuki Okajima, Hiroshi Nakatsuka, Keiji Onishi | 2012-10-16 |
| 8022794 | Micromachine switch, filter circuit, duplexer circuit, and communication device | Hiroshi Nakatsuka, Keiji Onishi | 2011-09-20 |
| 7986198 | Frequency-variable acoustic thin film resonator, filter and communication apparatus using the same | Hiroshi Nakatsuka, Keiji Onishi | 2011-07-26 |
| 7893793 | Film bulk acoustic wave resonator and method for manufacturing the same | Tomohiro Iwasaki, Keiji Onishi, Hiroshi Nakatsuka, Tomohide Kamiyama | 2011-02-22 |
| RE42009 | Piezoelectric resonator having a spurious component control layer, filter using the piezoelectric resonator, and duplexer using the piezoelectric resonator | Hiroshi Nakatsuka, Keiji Onishi, Hiroyuki Nakamura | 2010-12-28 |
| 7719390 | Dual mode piezoelectric filter, method of manufacturing the same, high frequency circuit component and communication device using the same | Tomohiro Iwasaki, Hiroshi Nakatsuka, Keiji Onishi, Tomohide Kamiyama | 2010-05-18 |
| 7675389 | Piezoelectric resonator, piezoelectric filter, and duplexer and communication device using the same | Hiroshi Nakatsuka, Keiji Onishi | 2010-03-09 |
| 7639103 | Piezoelectric filter, antenna duplexer, and communications apparatus employing piezoelectric resonator | Tomohide Kamiyama, Tomohiro Iwasaki, Hiroshi Nakatsuka, Keiji Onishi | 2009-12-29 |
| 7623007 | Device including piezoelectric thin film and a support having a vertical cross-section with a curvature | Hiroshi Nakatsuka, Keiji Onishi, Tomohiro Iwasaki, Tomohide Kamiyama | 2009-11-24 |
| 7479847 | Filter using piezoelectric resonator | Hiroshi Yamaguchi, Hiroshi Nakatsuka, Hiroyuki Nakamura, Keiji Onishi, Toshio Ishizaki | 2009-01-20 |