AKIYOSHI; Ryohei
Patent Applications and Registrations
Patent applications and USPTO patent grants for AKIYOSHI; Ryohei.The latest application filed is for "heat-resistant ir alloy".
- AKIYOSHI; Ryohei - Kariya-city JP
- Akiyoshi; Ryohei - Kariya JP
| Patent | Date |
|---|---|
| Heat-resistant Ir Alloy App 20220282358 - YOKOTA; Shunsuke ; et al. | 2022-09-08 |
| Heat- Resistant Ir Alloy Wire App 20220170136 - YOKOTA; Shunsuke ; et al. | 2022-06-02 |
| Heat-resistant Ir Alloy App 20220170135 - YOKOTA; Shunsuke ; et al. | 2022-06-02 |
| Heat-resistant Ir alloy Grant 11,131,008 - Yokota , et al. September 28, 2 | 2021-09-28 |
| Spark plug electrode and spark plug Grant 10,938,186 - Akiyoshi , et al. March 2, 2 | 2021-03-02 |
| Spark Plug Electrode And Spark Plug App 20200321756 - Akiyoshi; Ryohei ; et al. | 2020-10-08 |
| Spark plug for internal combustion engine that makes re-discharge less prone to occur Grant 10,777,974 - Nishio , et al. Sept | 2020-09-15 |
| Spark plug Grant 10,693,280 - Akiyoshi | 2020-06-23 |
| Spark Plug App 20200112145 - AKIYOSHI; Ryohei | 2020-04-09 |
| Spark Plug For Internal Combustion Engine App 20190386467 - NISHIO; Noriaki ; et al. | 2019-12-19 |
| Spark plug for internal combustion engine Grant 10,505,347 - Shibata , et al. Dec | 2019-12-10 |
| Heat-resistant Ir Alloy App 20190338395 - YOKOTA; Shunsuke ; et al. | 2019-11-07 |
| Spark plug for internal combustion engine Grant 10,431,960 - Ohno , et al. O | 2019-10-01 |
| Spark Plug For Internal Combustion Engine App 20190214792 - OHNO; Ryuichi ; et al. | 2019-07-11 |
| Spark plug Grant 10,348,060 - Watanabe , et al. July 9, 2 | 2019-07-09 |
| Spark Plug For Internal Combustion Engine App 20190199068 - SHIBATA; Masamichi ; et al. | 2019-06-27 |
| Spark plug and manufacturing method thereof Grant 10,050,417 - Akiyoshi , et al. August 14, 2 | 2018-08-14 |
| Ignition control system Grant 9,935,429 - Hanashi , et al. April 3, 2 | 2018-04-03 |
| Spark Plug App 20180062355 - WATANABE; Tomoyuki ; et al. | 2018-03-01 |
| Spark Plug And Manufacturing Method Thereof App 20180062357 - AKIYOSHI; Ryohei ; et al. | 2018-03-01 |
| Spark plug for an internal combustion engine Grant 9,847,622 - Akiyoshi , et al. December 19, 2 | 2017-12-19 |
| Spark Plug For An Internal Combustion Engine App 20170279248 - AKIYOSHI; Ryohei ; et al. | 2017-09-28 |
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