Inventor · disambiguated record
Sheng-Fan Chang
Also filed as: CHANG SHENG · CHANG SHENG-FAN
10 granted patents·5 pending applications·7 citations·filing 2017–2023
78Inventor score
Top patents by PatentIndex Score
15 records- 0191US10777371B1Key structurePRIMAX ELECTRONICS LTD·Filed 2019·Granted Sep 15, 2020·6 cites·17 claims
- 0288US12211657B2KeycapPRIMAX ELECTRONICS LTD·Filed 2023·Granted Jan 28, 2025·1 cites·10 claims
- 0368US12374511B2KeycapPRIMAX ELECTRONICS LTD·Filed 2023·Granted Jul 29, 2025·0 cites·9 claims
- 0467US11626259B1Membrane circuit structurePRIMAX ELECTRONICS LTD·Filed 2022·Granted Apr 11, 2023·0 cites·10 claims
- 0565US12362110B2KeycapPRIMAX ELECTRONICS LTD·Filed 2023·Granted Jul 15, 2025·0 cites·9 claims
- 0658US11342133B1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Granted May 24, 2022·0 cites·11 claims
- 0754US11610745B1Key structurePRIMAX ELECTRONICS LTD·Filed 2022·Granted Mar 21, 2023·0 cites·9 claims
- 0851US11145474B1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2020·Granted Oct 12, 2021·0 cites·15 claims
- 0946US2022399171A1Keyboard device and key structure thereofPRIMAX ELECTRONICS LTD·Filed 2021·Application pending·0 cites
- 1045US2023014686A1Key structurePRIMAX ELECTRONICS LTD·Filed 2021·Application pending·0 cites
- 1143US10832877B2Keycap forming methodPRIMAX ELECTRONICS LTD·Filed 2018·Granted Nov 10, 2020·0 cites·8 claims
- 1242US10699858B2Keyboard devicePRIMAX ELECTRONICS LTD·Filed 2018·Granted Jun 30, 2020·0 cites·9 claims
- 1342US2022044558A1Method and device for generating a digital representation of traffic on a roadHUAWEI TECH CO LTD·Filed 2021·Application pending·0 cites
- 1437US2018342361A1Luminous keyboardPRIMAX ELECTRONICS LTD·Filed 2017·Application pending·0 cites
- 1536US2019013161A1KeyboardPRIMAX ELECTRONICS LTD·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →