Inventor · disambiguated record
Yen Jen Chang
Also filed as: CHANG YEN JEN
14 granted patents·9 pending applications·142 citations·filing 2001–2024
91Inventor score
Top patents by PatentIndex Score
23 records- 0192US11638443B2Heater control circuitry for vaporizer deviceJUUL LABS INC·Filed 2019·Granted May 2, 2023·5 cites·41 claims
- 0291US2025185705A1Vaporizer device bodyPAX LABS INC·Filed 2024·Application pending·0 cites
- 0391US2025185704A1Vaporizer device with differential pressure sensorPAX LABS INC·Filed 2024·Application pending·0 cites
- 0490US7345909B2Low-power SRAM memory cellCHANG YEN-JEN·Filed 2004·Granted Mar 18, 2008·116 cites·12 claims
- 0589US11606970B2Vaporizer device with differential pressure sensorJUUL LABS INC·Filed 2019·Granted Mar 21, 2023·4 cites·32 claims
- 0687US12156536B2Heater control circuitry for vaporizer devicePAX LABS INC·Filed 2023·Granted Dec 3, 2024·0 cites·21 claims
- 0787US12108785B2Vaporizer device bodyPAX LABS INC·Filed 2023·Granted Oct 8, 2024·0 cites·15 claims
- 0887US12102117B2Vaporizer device with differential pressure sensorPAX LABS INC·Filed 2023·Granted Oct 1, 2024·0 cites·32 claims
- 0986US11632983B2Vaporizer device bodyJUUL LABS INC·Filed 2019·Granted Apr 25, 2023·2 cites·18 claims
- 1081US11666086B2Vaporizer cartridge for a vaporizerJUUL LABS INC·Filed 2019·Granted Jun 6, 2023·1 cites·9 claims
- 1167US7237246B2Position adjustment and damper mechanism for an optical disk driveBANQ CORP·Filed 2003·Granted Jun 26, 2007·9 cites·4 claims
- 1263US12029237B2Identification of a cartridge for a vaporizer devicePAX LABS INC·Filed 2019·Granted Jul 9, 2024·0 cites·30 claims
- 1361US2024319566A1Auxiliary staring and imaging focusing deviceCRYSTALVUE MEDICAL CORP·Filed 2024·Application pending·0 cites
- 1459US6922837B2Disc ejection deviceBENQ CORP·Filed 2003·Granted Jul 26, 2005·4 cites·10 claims
- 1556US2025049319A1Optical detection system integrating tonometer and autorefractorCRYSTALVUE MEDICAL CORP·Filed 2024·Application pending·0 cites
- 1656US2023404403A1Optical detection system capable of providing auxiliary light source projectionCRYSTALVUE MEDICAL CORP·Filed 2023·Application pending·0 cites
- 1755US2025049316A1Optical biometerCRYSTALVUE MEDICAL CORP·Filed 2024·Application pending·0 cites
- 1854US2024324872A1Optical system applied to optical biometerCRYSTALVUE MEDICAL CORP·Filed 2024·Application pending·0 cites
- 1950US6577576B2Optical storage carrier player with an observing windowBENQ CORP·Filed 2001·Granted Jun 10, 2003·1 cites·11 claims
- 2043US7467397B2Disc playerQISDA CORP·Filed 2004·Granted Dec 16, 2008·0 cites·19 claims
- 2141US2005108737A1Optical driveFiled 2004·Application pending·0 cites
- 2240US8777411B2Fundus examination device capable of aiding in gaze fixation and image focusingCRYSTALVUE MEDICAL CORP·Filed 2012·Granted Jul 15, 2014·0 cites·12 claims
- 2339US2013250236A1Gaze-fixation aiding and image focusing deviceCRYSTALVUE MEDICAL CORP·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →