Inventor · disambiguated record
Lei-Lung Tsai
Also filed as: TSAI LEI-LUNG
44 granted patents·16 pending applications·74 citations·filing 2005–2024
96Inventor score
Top patents by PatentIndex Score
60 records- 0198US11175444B1Luminous keyboard and backlight module thereofPRIMAX ELECTRONICS LTD·Filed 2021·Granted Nov 16, 2021·10 cites·6 claims
- 0294US10903024B1Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2020·Granted Jan 26, 2021·4 cites·10 claims
- 0392US11177091B1Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2020·Granted Nov 16, 2021·4 cites·11 claims
- 0491US10777371B1Key structurePRIMAX ELECTRONICS LTD·Filed 2019·Granted Sep 15, 2020·6 cites·17 claims
- 0591US10410807B2Luminous keyboardPRIMAX ELECTRONICS LTD·Filed 2017·Granted Sep 10, 2019·5 cites·9 claims
- 0691US10115542B1KeyboardPRIMAX ELECTRONICS LTD·Filed 2017·Granted Oct 30, 2018·5 cites·9 claims
- 0790US11456128B1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted Sep 27, 2022·2 cites·9 claims
- 0888US12211657B2KeycapPRIMAX ELECTRONICS LTD·Filed 2023·Granted Jan 28, 2025·1 cites·10 claims
- 0987US10509482B1Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2018·Granted Dec 17, 2019·7 cites·10 claims
- 1084US11289283B1Key structure and rubber dome thereofPRIMAX ELECTRONICS LTD·Filed 2020·Granted Mar 29, 2022·1 cites·12 claims
- 1184US11177083B1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted Nov 16, 2021·1 cites·17 claims
- 1284US11177092B1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2021·Granted Nov 16, 2021·1 cites·8 claims
- 1381US10153106B1Keyboard structurePRIMAX ELECTRONICS LTD·Filed 2017·Granted Dec 11, 2018·2 cites·9 claims
- 1481US9633800B1Key structurePRIMAX ELECTRONICS LTD·Filed 2016·Granted Apr 25, 2017·3 cites·11 claims
- 1580US10312035B2Luminous keyboardPRIMAX ELECTRONICS LTD·Filed 2018·Granted Jun 4, 2019·2 cites·10 claims
- 1679US8188387B2Keyswitch and keyboardLO KAN-PING·Filed 2010·Granted May 29, 2012·7 cites·16 claims
- 1777US10600591B2Luminous keyboard having translucent light diffusing rubber domesPRIMAX ELECTRONICS LTD·Filed 2018·Granted Mar 24, 2020·2 cites·6 claims
- 1876US7798013B2Automatic keyboard inspection apparatusDARFON ELECTRONICS CORP·Filed 2008·Granted Sep 21, 2010·8 cites·12 claims
- 1973US10242819B1Mechanical key structurePRIMAX ELECTRONICS LTD·Filed 2018·Granted Mar 26, 2019·1 cites·8 claims
- 2072US10153104B1Keyboard structure with electrostatic discharge protectionPRIMAX ELECTRONICS LTD·Filed 2017·Granted Dec 11, 2018·1 cites·16 claims
- 2168US12374511B2KeycapPRIMAX ELECTRONICS LTD·Filed 2023·Granted Jul 29, 2025·0 cites·9 claims
- 2267US11626259B1Membrane circuit structurePRIMAX ELECTRONICS LTD·Filed 2022·Granted Apr 11, 2023·0 cites·10 claims
- 2367US10236142B2Luminous keyboardPRIMAX ELECTRONICS LTD·Filed 2017·Granted Mar 19, 2019·1 cites·7 claims
- 2466US11887792B1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2022·Granted Jan 30, 2024·0 cites·11 claims
- 2564US12131876B2Membrane switchPRIMAX ELECTRONICS LTD·Filed 2023·Granted Oct 29, 2024·0 cites·13 claims
- 2662US11624867B1Keycap, method of manufacturing the same and key structurePRIMAX ELECTRONICS LTD·Filed 2022·Granted Apr 11, 2023·0 cites·10 claims
- 2762US11289281B1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted Mar 29, 2022·0 cites·13 claims
- 2860US2025285820A1Long-type key structurePRIMAX ELECTRONICS LTD·Filed 2024·Application pending·0 cites
- 2959US12266484B2Force-sensitive key module and force-sensitive switch structure thereofPRIMAX ELECTRONICS LTD·Filed 2023·Granted Apr 1, 2025·0 cites·13 claims
- 3058US11574780B2Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted Feb 7, 2023·0 cites·17 claims
- 3158US11342133B1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted May 24, 2022·0 cites·11 claims
- 3255US2025063655A1Membrane circuit boardPRIMAX ELECTRONICS LTD·Filed 2023·Application pending·0 cites
- 3354US11610745B1Key structurePRIMAX ELECTRONICS LTD·Filed 2022·Granted Mar 21, 2023·0 cites·9 claims
- 3453US11430620B1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2021·Granted Aug 30, 2022·0 cites·9 claims
- 3553US11011330B2Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2019·Granted May 18, 2021·0 cites·15 claims
- 3653US10755873B2Membrane circuit board and keyboard device with samePRIMAX ELECTRONICS LTD·Filed 2019·Granted Aug 25, 2020·0 cites·20 claims
- 3752US11120956B1Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2020·Granted Sep 14, 2021·0 cites·9 claims
- 3851US11145474B1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2020·Granted Oct 12, 2021·0 cites·15 claims
- 3949US10403452B1Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2018·Granted Sep 3, 2019·0 cites·8 claims
- 4049US2024015892A1Manufacturing method of membrane circuit boardPRIMAX ELECTRONICS LTD·Filed 2022·Application pending·0 cites
- 4148US8124886B2Membrane circuit boardTSAI WEN-YU·Filed 2009·Granted Feb 28, 2012·0 cites·6 claims
- 4248US2022199338A1Key structure and elastic conduction element thereofPRIMAX ELECTRONICS LTD·Filed 2021·Application pending·0 cites
- 4347US10170254B1Key structurePRIMAX ELECTRONICS LTD·Filed 2017·Granted Jan 1, 2019·0 cites·10 claims
- 4447US8022325B2Keyswitch and keyboardDARFON ELECTRONICS CORP·Filed 2009·Granted Sep 20, 2011·0 cites·12 claims
- 4547US2009262077A1Keyswitch and keyboardDARFON ELECTRONICS CORP·Filed 2009·Application pending·0 cites
- 4646US2022399171A1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2021·Application pending·0 cites
- 4745US9627157B1KeyboardPRIMAX ELECTRONICS LTD·Filed 2016·Granted Apr 18, 2017·0 cites·11 claims
- 4845US2007268681A1Luminous keyboard and light module thereofDARFON ELECTRONICS CORP·Filed 2007·Application pending·0 cites
- 4945US2010009211A1Welding structure and keyboard using the sameDARFON ELECTRONICS CORP·Filed 2009·Application pending·0 cites
- 5045US2023014686A1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Application pending·0 cites
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →