Inventor · disambiguated record
Hsien-Tsan Chang
Also filed as: CHANG HSIEN TSAN
12 granted patents·4 pending applications·17 citations·filing 2007–2023
85Inventor score
Top patents by PatentIndex Score
16 records- 0196US11287899B1Keyboard device with protecting function and manufacturing method thereofPRIMAX ELECTRONICS LTD·Filed 2021·Granted Mar 29, 2022·5 cites·16 claims
- 0291US11823850B1Information handling system keyboard backlight having mini-LED integrated light guide arrangementDELL PRODUCTS LP·Filed 2022·Granted Nov 21, 2023·1 cites·19 claims
- 0379US9087662B2Keyboard with induction antenna arranged under a keyPRIMAX ELECTRONICS LTD·Filed 2013·Granted Jul 21, 2015·4 cites·20 claims
- 0478US9941072B1Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2017·Granted Apr 10, 2018·2 cites·9 claims
- 0566US12242673B1Information handling system keyboard color adjustable backlightDELL PRODUCTS LP·Filed 2023·Granted Mar 4, 2025·0 cites·6 claims
- 0666US9627158B2Keyboard key using an asymmetric scissor-type connecting elementPRIMAX ELECTRONICS LTD·Filed 2015·Granted Apr 18, 2017·1 cites·11 claims
- 0765US11456129B1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted Sep 27, 2022·0 cites·8 claims
- 0864US9905380B2Magnetic type keyboard and magnetic key thereofPRIMAX ELECTRONICS LTD·Filed 2016·Granted Feb 27, 2018·1 cites·12 claims
- 0961US9412536B2Illuminated keyboardPRIMAX ELECTRONICS LTD·Filed 2013·Granted Aug 9, 2016·1 cites·13 claims
- 1056US7728243B2Keyboard with wobble prevention structureDARFON ELECTRONICS CORP·Filed 2007·Granted Jun 1, 2010·2 cites·17 claims
- 1150US10251264B2Membrane circuit structure with function expandabilityPRIMAX ELECTRONICS LTD·Filed 2017·Granted Apr 2, 2019·0 cites·10 claims
- 1245US2010147662A1Light-emitting keyboardDARFON ELECTRONICS CORP·Filed 2009·Application pending·0 cites
- 1344US2010147668A1Thin film switchDARFON ELECTRONICS CORP·Filed 2009·Application pending·0 cites
- 1443US9214295B2Key structurePRIMAX ELECTRONICS LTD·Filed 2013·Granted Dec 15, 2015·0 cites·10 claims
- 1542US2020075271A1Keyboard device and manufacturing method thereofPRIMAX ELECTRONICS LTD·Filed 2018·Application pending·0 cites
- 1633US2012006666A1Keyswitch and keyboardCHANG CHAO-LUNG·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →