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Patent applications and USPTO patent grants for Du; Junfeng.The latest application filed is for "method for figure correction of optical element by reactive ion etching".
Patent | Date |
---|---|
Circuit board assembly and rice cooker Grant 11,406,029 - Zhou , et al. August 2, 2 | 2022-08-02 |
Rice cooker with lid and body control panels Grant 11,178,993 - Zhou , et al. November 23, 2 | 2021-11-23 |
Method for figure correction of optical element by reactive ion etching Grant 11,163,237 - Li , et al. November 2, 2 | 2021-11-02 |
Method For Figure Correction Of Optical Element By Reactive Ion Etching App 20200401051 - LI; Zhiwei ;   et al. | 2020-12-24 |
Cooking Appliance And Control Method Thereof App 20200383522 - ZHOU; Yi ;   et al. | 2020-12-10 |
Circuit Board Assembly And Rice Cooker App 20200367374 - ZHOU; Yi ;   et al. | 2020-11-19 |
Cooking Appliance App 20190246829 - Zhou; Yi ;   et al. | 2019-08-15 |
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