Chang; Yu-Chih
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Yu-Chih.The latest application filed is for "keyswitch structure".
- Chang; Yu-Chih - Taoyuan TW
- Chang; Yu-Chih - Taoyuan City TW
- Chang; Yu-Chih - Taoyuan County TW
- CHANG; Yu Chih - Taipei TW
- CHANG; Yu-Chih - Gueishan TW
- Chang, Yu-Chih - Hsinchu TW
| Patent | Date |
|---|---|
| Keyswitch structure Grant 11,289,284 - Su , et al. March 29, 2 | 2022-03-29 |
| Keyswitch Structure App 20210202191 - Su; Cheng-Min ; et al. | 2021-07-01 |
| Keyswitch App 20210175028 - Chan; Jin-Long ; et al. | 2021-06-10 |
| Keyswitch structure Grant 10,984,968 - Su , et al. April 20, 2 | 2021-04-20 |
| Key switch Grant 10,971,314 - Chiang , et al. April 6, 2 | 2021-04-06 |
| Key Switch App 20210012982 - Chiang; Chih-Hsiang ; et al. | 2021-01-14 |
| Key Switch App 20200411257 - Chang; Yu-Chih ; et al. | 2020-12-31 |
| Keyswitch Structure App 20200373105 - Su; Cheng-Min ; et al. | 2020-11-26 |
| Cap Structure And Keyswitch Thereof App 20190237279 - Hu; Tsai-Jung ; et al. | 2019-08-01 |
| Thin push button structure Grant 9,111,700 - Liu , et al. August 18, 2 | 2015-08-18 |
| Thin key structure Grant 9,105,422 - Liu , et al. August 11, 2 | 2015-08-11 |
| Thin Push Button Structure App 20150136572 - LIU; CHANG -LI ; et al. | 2015-05-21 |
| Thin Key Structure App 20140224634 - LIU; CHANG-LI ; et al. | 2014-08-14 |
| Method For Bonding Plastic Mold Member Onto Metal Housing App 20130075941 - Chang; Yu-Chih ; et al. | 2013-03-28 |
| Method For Bonding Plastic Mold Member Onto Metal Housing App 20130075026 - Chang; Yu-Chih ; et al. | 2013-03-28 |
| Biochemical Material Detection System App 20130062530 - CHANG; Yu Chih | 2013-03-14 |
| Method of manufacturing non-backlighted illuminating keypad Grant 8,056,216 - Chang , et al. November 15, 2 | 2011-11-15 |
| Non-backlighted illuminating keypad Grant 7,893,375 - Chang , et al. February 22, 2 | 2011-02-22 |
| Method Of Manufacturing Non-backlighted Illuminating Keypad App 20090241338 - CHANG; Yu-Chih ; et al. | 2009-10-01 |
| Non-backlighted Illuminating Keypad App 20090242368 - CHANG; Yu-Chih ; et al. | 2009-10-01 |
| Manufacturing Method Of Keypad Panel App 20090057932 - CHANG; Yu-Chih | 2009-03-05 |
| Mold Structure For Forming Keypad Panel App 20090057532 - CHANG; Yu-Chih | 2009-03-05 |
| Structural improvement for wafer supporting apparatus App 20030221782 - Chang, Yu-Chih | 2003-12-04 |
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