Inventor · disambiguated record
Andy Chang
Also filed as: CHANG ANDY · CHANG ANDY C H · CHANG ANDY C M
15 granted patents·4 pending applications·1,805 citations·filing 1989–2021
93Inventor score
Files withCHANG ANDY4AHLGREN JANET2UNIV HONG KONG SCIENCE & TECHN2VIRTUALAGILITY INC2AMAZON TECH INC1
Top patents by PatentIndex Score
19 records- 0195US8082301B2System for supporting collaborative activityAHLGREN JANET·Filed 2007·Granted Dec 20, 2011·1.7k cites·17 claims
- 0293US7720148B2Efficient multi-frame motion estimation for video compressionUNIV HONG KONG SCIENCE & TECHN·Filed 2005·Granted May 18, 2010·20 cites·51 claims
- 0388US8966445B2System for supporting collaborative activityVIRTUALAGILITY INC·Filed 2014·Granted Feb 24, 2015·11 cites·27 claims
- 0484US11500837B1Automating optimizations for items in a hierarchical data storeAMAZON TECH INC·Filed 2019·Granted Nov 15, 2022·6 cites·20 claims
- 0584US8850385B2System for supporting collaborative activityAHLGREN JANET·Filed 2011·Granted Sep 30, 2014·8 cites·16 claims
- 0673US7657113B2Auto-regressive method and filter for denoising images and videosHK APPLIED SCIENCE & TECH RES·Filed 2005·Granted Feb 2, 2010·12 cites·8 claims
- 0770US4949616AStepless transmission scroll sawing machine with saw blade fastening and micro-inch adjusting means and the related positioning deviceCHANG ANDY·Filed 1989·Granted Aug 21, 1990·24 cites·3 claims
- 0863US9864655B2Methods and apparatus for mobile computing device security in testing facilitiesGOOGLE INC·Filed 2015·Granted Jan 9, 2018·2 cites·20 claims
- 0963US7928327B2Shielding deviceWISTRON CORP·Filed 2008·Granted Apr 19, 2011·2 cites·12 claims
- 1049US11435896B1Secured operation with optional cancellation on touch-sensitive devicesTFI DIGITAL MEDIA LTD·Filed 2021·Granted Sep 6, 2022·0 cites·18 claims
- 1149US2010215106A1Efficient multi-frame motion estimation for video compressionUNIV HONG KONG SCIENCE & TECHN·Filed 2010·Application pending·0 cites
- 1248US2016352812A1System for supporting collaborative activityVIRTUALAGILITY INC·Filed 2015·Application pending·0 cites
- 1344US2006002474A1Efficient multi-block motion estimation for video compressionAU OSCAR CHI-LIM·Filed 2005·Application pending·0 cites
- 1441US5105704AAdjustable saw blade fastenerCHANG ANDY·Filed 1991·Granted Apr 21, 1992·9 cites·1 claims
- 1539US2002101411A1Protecting device of an electronic panel of a personal digital assistantFiled 2001·Application pending·0 cites
- 1637US5389526APlasmid vectors for cellular slime moulds of the genus dictyosteliumFiled 1990·Granted Feb 14, 1995·5 cites·20 claims
- 1736US5022157ATransmission mechanism for scroll sawing machineCHANG ANDY·Filed 1990·Granted Jun 11, 1991·8 cites·1 claims
- 1835US8949080B2Methods of designing integrated circuits and systems thereofLI KUO-TSAI·Filed 2010·Granted Feb 3, 2015·0 cites·19 claims
- 1931US5070752AStructure of driving mechanism for scroll sawing machineCHANG ANDY·Filed 1990·Granted Dec 10, 1991·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →