Inventor · disambiguated record
Chao Wang
Also filed as: WANG CHAO · WANG CHAO-LANG
48 granted patents·26 pending applications·356 citations·filing 2000–2025
98Inventor score
Files withAMAZON TECH INC32WANG CHAO-LANG12AAC MICROTECH CHANGZHOU CO LTD8WANG CHAO3ZEROTECH (CHONGQING) INTELLIGENCE TECH CO LTD3
Top patents by PatentIndex Score
74 records- 0197US10121494B1User presence detectionAMAZON TECH INC·Filed 2017·Granted Nov 6, 2018·36 cites·31 claims
- 0295US12039998B1Self-supervised federated learningAMAZON TECH INC·Filed 2022·Granted Jul 16, 2024·5 cites·20 claims
- 0395US11302329B1Acoustic event detectionAMAZON TECH INC·Filed 2020·Granted Apr 12, 2022·16 cites·20 claims
- 0494US11069352B1Media presence detectionAMAZON TECH INC·Filed 2019·Granted Jul 20, 2021·33 cites·18 claims
- 0593US12087320B1Acoustic event detectionAMAZON TECH INC·Filed 2022·Granted Sep 10, 2024·6 cites·20 claims
- 0693US11790932B2Acoustic event detectionAMAZON TECH INC·Filed 2021·Granted Oct 17, 2023·3 cites·20 claims
- 0793USD963787SMosquito killer lightWANG CHAO·Filed 2022·Granted Sep 13, 2022·18 cites·1 claims
- 0893US10943604B1Emotion detection using speaker baselineAMAZON TECH INC·Filed 2019·Granted Mar 9, 2021·14 cites·20 claims
- 0992US11132990B1Wakeword and acoustic event detectionAMAZON TECH INC·Filed 2019·Granted Sep 28, 2021·13 cites·20 claims
- 1091US11854538B1Sentiment detection in audio dataAMAZON TECH INC·Filed 2019·Granted Dec 26, 2023·24 cites·16 claims
- 1191US11532300B1System to determine sentiment from audio dataAMAZON TECH INC·Filed 2020·Granted Dec 20, 2022·3 cites·20 claims
- 1291US11043218B1Wakeword and acoustic event detectionAMAZON TECH INC·Filed 2019·Granted Jun 22, 2021·11 cites·20 claims
- 1390US12327551B1Acoustic event detectionAMAZON TECH INC·Filed 2022·Granted Jun 10, 2025·3 cites·20 claims
- 1490US11657832B2User presence detectionAMAZON TECH INC·Filed 2020·Granted May 23, 2023·2 cites·18 claims
- 1590US11308939B1Wakeword detection using multi-word modelAMAZON TECH INC·Filed 2018·Granted Apr 19, 2022·13 cites·19 claims
- 1690US8757317B1Barrel-shaped multidirectional loudspeaker enclosure structureLONGINESTENO TECHNOLOGY COMPLEX CORP·Filed 2013·Granted Jun 24, 2014·24 cites·14 claims
- 1789US12412574B1Conversation-based skill component for assessing a user's stateAMAZON TECH INC·Filed 2022·Granted Sep 9, 2025·1 cites·20 claims
- 1889US11003491B1Optimizing background tasks based on forecast dataAMAZON TECH INC·Filed 2018·Granted May 11, 2021·10 cites·15 claims
- 1989US10418957B1Audio event detectionAMAZON TECH INC·Filed 2018·Granted Sep 17, 2019·10 cites·17 claims
- 2087USD1072285SLight for outdoor light stringWANG CHAO·Filed 2024·Granted Apr 22, 2025·9 cites·1 claims
- 2186US10803885B1Audio event detectionAMAZON TECH INC·Filed 2018·Granted Oct 13, 2020·7 cites·26 claims
- 2286US9967657B1Directional loudspeaker box with directional acoustic transmission holesLONGINESTENO TECH COMPLEX CORPORATION·Filed 2017·Granted May 8, 2018·9 cites·18 claims
- 2386US8406444B2Audio radiation type reflective sound box structureWANG CHAO-LANG·Filed 2010·Granted Mar 26, 2013·10 cites·16 claims
- 2485US11335347B2Multiple classifications of audio dataAMAZON TECH INC·Filed 2019·Granted May 17, 2022·5 cites·18 claims
- 2584US11869535B1Character-level emotion detectionAMAZON TECH INC·Filed 2019·Granted Jan 9, 2024·7 cites·23 claims
- 2683US11961514B1Streaming self-attention in a neural networkAMAZON TECH INC·Filed 2021·Granted Apr 16, 2024·1 cites·20 claims
- 2783US11790919B2Multiple classifications of audio dataAMAZON TECH INC·Filed 2022·Granted Oct 17, 2023·1 cites·18 claims
- 2883US8020823B2Three-dimensional multi-directional rotation supportWANG CHAO-LANG·Filed 2009·Granted Sep 20, 2011·19 cites·8 claims
- 2982US12068001B2Acoustic event detectionAMAZON TECH INC·Filed 2023·Granted Aug 20, 2024·1 cites·20 claims
- 3079US8462977B2Loudspeaker with magnetic elements fixedly provided on diaphragmWANG CHAO-LANG·Filed 2010·Granted Jun 11, 2013·6 cites·10 claims
- 3178US12374353B1Acoustic event detectionAMAZON TECH INC·Filed 2023·Granted Jul 29, 2025·1 cites·20 claims
- 3276US2025372093A1Conversation-based skill component for assessing a user's stateAMAZON TECH INC·Filed 2025·Application pending·0 cites
- 3373US11783850B1Acoustic event detectionAMAZON TECH INC·Filed 2021·Granted Oct 10, 2023·1 cites·18 claims
- 3473US8472645B2Device with dynamic magnet loudspeakerWANG CHAO-LANG·Filed 2010·Granted Jun 25, 2013·4 cites·26 claims
- 3573US2023410833A1User presence detectionAMAZON TECH INC·Filed 2023·Application pending·0 cites
- 3671US2025230333A1Sound absorption material block and method made thereofAAC MICROTECH CHANGZHOU CO LTD·Filed 2024·Application pending·0 cites
- 3769US12308045B2Acoustic event detectionAMAZON TECH INC·Filed 2023·Granted May 20, 2025·0 cites·20 claims
- 3868US2025188281A1Rubber voice diaphragm, acoustic generator and application thereofAAC MICROTECH CHANGZHOU CO LTD·Filed 2024·Application pending·0 cites
- 3967US2025227417A1Rubber diaphragm, sound device and application thereofAAC MICROTECH CHANGZHOU CO LTD·Filed 2024·Application pending·0 cites
- 4067US2025223393A1Rubber diaphragm, sound device and application thereofAAC MICROTECH CHANGZHOU CO LTD·Filed 2024·Application pending·0 cites
- 4163US8280001B2Radiation sculpting by coordinating rotation of fixed beams and motion of patient support systemWANG CHAO·Filed 2010·Granted Oct 2, 2012·2 cites·10 claims
- 4263US6415037B1Speaker and the manufacturing method thereofELECINIC CORP·Filed 2000·Granted Jul 2, 2002·10 cites·4 claims
- 4362US11545174B2Emotion detection using speaker baselineAMAZON TECH INC·Filed 2021·Granted Jan 3, 2023·0 cites·18 claims
- 4461US11670299B2Wakeword and acoustic event detectionAMAZON TECH INC·Filed 2021·Granted Jun 6, 2023·0 cites·22 claims
- 4561US2012321847A1Three-dimensional board structure and method for making the sameWANG CHAO-LANG·Filed 2012·Application pending·0 cites
- 4659US7006648B2Speaker cabinet with increased air circulation efficiencyWANG CHAO-LANG·Filed 2003·Granted Feb 28, 2006·6 cites·10 claims
- 4757US11607679B2Materials plated with precious metals and making and using sameUNIV JOHNS HOPKINS·Filed 2018·Granted Mar 21, 2023·0 cites·44 claims
- 4857US10796716B1User presence detectionAMAZON TECH INC·Filed 2018·Granted Oct 6, 2020·0 cites·21 claims
- 4957US2025290694A1Sound-absorbing material, method for preparing same, and speaker using the sound-absorbing materialAAC MICROTECH CHANGZHOU CO LTD·Filed 2024·Application pending·0 cites
- 5056US2011274876A1Three-dimensional board structure and method for making the sameWANG CHAO-LANG·Filed 2010·Application pending·0 cites
Showing the top 50 of 74 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →