Katabuchi; Keisuke
Patent Applications and Registrations
Patent applications and USPTO patent grants for Katabuchi; Keisuke.The latest application filed is for "directional coupler".
- Katabuchi; Keisuke - Nagaokakyo JP
- Katabuchi; Keisuke - Kyoto JP
- KATABUCHI; Keisuke - Nagaokakyo-shi JP
| Patent | Date |
|---|---|
| Directional coupler Grant 9,843,085 - Katabuchi , et al. December 12, 2 | 2017-12-12 |
| Variable-frequency resonance circuit and variable-frequency filter Grant 9,722,567 - Yunoki , et al. August 1, 2 | 2017-08-01 |
| Directional coupler Grant 9,685,688 - Katabuchi , et al. June 20, 2 | 2017-06-20 |
| Directional Coupler App 20170084979 - KATABUCHI; Keisuke ; et al. | 2017-03-23 |
| Directional coupler Grant 9,543,632 - Katabuchi , et al. January 10, 2 | 2017-01-10 |
| Directional coupler Grant 9,444,127 - Katabuchi , et al. September 13, 2 | 2016-09-13 |
| Directional Coupler App 20160028144 - Katabuchi; Keisuke ; et al. | 2016-01-28 |
| Directional Coupler App 20160028145 - KATABUCHI; Keisuke ; et al. | 2016-01-28 |
| Variable-frequency Resonance Circuit And Variable-frequency Filter App 20150162888 - YUNOKI; Yasushi ; et al. | 2015-06-11 |
| Directional Coupler App 20150109069 - KATABUCHI; Keisuke ; et al. | 2015-04-23 |
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