Inventor · disambiguated record
John Tsai
Also filed as: TSAI JOHN · TSAI JOHN C
47 granted patents·13 pending applications·909 citations·filing 1989–2023
98Inventor score
Top patents by PatentIndex Score
60 records- 0197US6748138B2Optical grating fabricationFIBERA INC·Filed 2001·Granted Jun 8, 2004·140 cites·24 claims
- 0295US7290709B2Information card systemTSAI ERICA·Filed 2006·Granted Nov 6, 2007·251 cites·16 claims
- 0386US6052186ADual laser system for extended heterodyne interferometryEXCEL PRECISION INC·Filed 1998·Granted Apr 18, 2000·68 cites·30 claims
- 0485US10198464B2Personal information platformsPAYPAL INC·Filed 2015·Granted Feb 5, 2019·3 cites·20 claims
- 0584US6561420B1Information card systemFiled 2001·Granted May 13, 2003·22 cites·14 claims
- 0682US7139295B2Tunable wavelength locker, tunable wavelength spectrum monitor, and relative wavelength measurement systemFIBERA INC·Filed 2004·Granted Nov 21, 2006·18 cites·11 claims
- 0782US5315372ANon-contact servo track writing apparatus having read/head arm and reference armEXCEL PRECISION INC·Filed 1993·Granted May 24, 1994·41 cites·19 claims
- 0880US12093425B2Personal information platformsPAYPAL INC·Filed 2023·Granted Sep 17, 2024·0 cites·20 claims
- 0976US6648615B2InflatorFiled 2001·Granted Nov 18, 2003·15 cites·8 claims
- 1075US11687669B2Personal information platformsPAYPAL INC·Filed 2022·Granted Jun 27, 2023·0 cites·20 claims
- 1175US6904200B2Multidimensional optical gratingsFIBERA INC·Filed 2001·Granted Jun 7, 2005·21 cites·22 claims
- 1274US6795459B2Light frequency lockerFIBERA INC·Filed 2001·Granted Sep 21, 2004·10 cites·25 claims
- 1372US7110121B2Rotation and translation measurementEXCEL PREC INC·Filed 2001·Granted Sep 19, 2006·8 cites·14 claims
- 1471US7004038B2Fiber optic flow meterFIBERA INC·Filed 2005·Granted Feb 28, 2006·7 cites·14 claims
- 1570US6804060B1Interference filter fabricationFIBERA INC·Filed 2001·Granted Oct 12, 2004·12 cites·19 claims
- 1670US5394244AAmbient air refracture index measuring deviceEXCEL PRECISION INC·Filed 1992·Granted Feb 28, 1995·33 cites·19 claims
- 1768US11321485B2Personal information platformsPAYPAL INC·Filed 2020·Granted May 3, 2022·0 cites·20 claims
- 1868US6393625B1Plumbing device for a basin drainageFiled 2001·Granted May 28, 2002·16 cites·4 claims
- 1968US5774295AServo track writing techniqueEXCEL PRECISION INC·Filed 1997·Granted Jun 30, 1998·21 cites·18 claims
- 2067US6522604B2Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unitEXCEL PREC CORP·Filed 2001·Granted Feb 18, 2003·5 cites·15 claims
- 2165US10678943B2Personal information platformsPAYPAL INC·Filed 2019·Granted Jun 9, 2020·0 cites·20 claims
- 2264US6731659B1Frequency lockerFIBERA INC·Filed 2002·Granted May 4, 2004·6 cites·30 claims
- 2363US7025265B2Information card systemFiled 2004·Granted Apr 11, 2006·8 cites·15 claims
- 2462US7375822B2Rotation and translation measurementEXCEL PREC CORP·Filed 2006·Granted May 20, 2008·3 cites·19 claims
- 2561US7268699B2Highway-rail grade crossing hazard mitigationFIBERA INC·Filed 2005·Granted Sep 11, 2007·3 cites·15 claims
- 2661US7245217B2Hazard mitigation for railway track intrusions at train station platformsFIBERA INC·Filed 2005·Granted Jul 17, 2007·4 cites·15 claims
- 2761US7027136B2Structure analysis and defect detection systemFIBERA INC·Filed 2003·Granted Apr 11, 2006·9 cites·32 claims
- 2860US6789738B2Information card systemFiled 2003·Granted Sep 14, 2004·6 cites·3 claims
- 2960US6266298B1Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unitEXCEL PREC CORP·Filed 1998·Granted Jul 24, 2001·12 cites·12 claims
- 3057US2023351492A1Systems and Methods for Determining an Interest Rate for a TransactionDECAMERON TECH LLC·Filed 2022·Application pending·0 cites
- 3156US7224467B2System for rotation measurement with laser interferometryEXCEL PREC CORP·Filed 2004·Granted May 29, 2007·7 cites·7 claims
- 3256US7196798B2Optical alignment method and apparatusEXCEL PREC CORP·Filed 2004·Granted Mar 27, 2007·7 cites·25 claims
- 3356US7116846B2Athermal fiber Bragg gratingFIBERA INC·Filed 2005·Granted Oct 3, 2006·2 cites·20 claims
- 3456US5920392AEnvironmental parameter measurement device and method for laser interferometryEXCEL PRECISION INC·Filed 1997·Granted Jul 6, 1999·24 cites·15 claims
- 3555US6807339B1Wavelength division multiplexing and de-multiplexing systemFIBERA INC·Filed 2001·Granted Oct 19, 2004·4 cites·60 claims
- 3653US6812452B2Apparatus and method for measuring the wavelength of light present in a light beamFIBERA INC·Filed 2002·Granted Nov 2, 2004·4 cites·34 claims
- 3753US6603629B1Non-contact servo track writing apparatus and methodEXCEL PREC INC·Filed 1998·Granted Aug 5, 2003·11 cites·16 claims
- 3853US6316779B1Rotation and translation measurement with phase sensitive detectionEXCEL PREC CORP·Filed 1999·Granted Nov 13, 2001·10 cites·24 claims
- 3953US5379115ADifferential interferometerEXCEL PRECISION·Filed 1991·Granted Jan 3, 1995·17 cites·13 claims
- 4052US6718092B2Frequency detection, tuning and stabilization systemFIBERA INC·Filed 2002·Granted Apr 6, 2004·3 cites·24 claims
- 4152US5191391AHigh resolution plane mirror interferometerEXCEL PRECISION·Filed 1991·Granted Mar 2, 1993·16 cites·11 claims
- 4251US6858834B2Light wavelength meterFIBERA INC·Filed 2001·Granted Feb 22, 2005·3 cites·22 claims
- 4351US5287982AStructure for the external cap of a spoutHO LEE CO LTD·Filed 1993·Granted Feb 22, 1994·21 cites·2 claims
- 4449US5991112ANon-contact servotrack writing with phase sensitive detectionEXCEL PRECISION·Filed 1997·Granted Nov 23, 1999·13 cites·20 claims
- 4548US6317200B1Positional measurement with normalized signal processingEXCEL PREC CORP·Filed 2000·Granted Nov 13, 2001·5 cites·26 claims
- 4648US2017193624A1Personal information certification and management systemPAYPAL INC·Filed 2015·Application pending·0 cites
- 4746US2006174721A1Digital scale for linear or rotary stageEXCEL PREC CORP·Filed 2006·Application pending·0 cites
- 4846US2008207996A1Portable Imaging ApparatusSOLAR INTERNAT PRODUCTS INC·Filed 2006·Application pending·0 cites
- 4945US4955751ACrossroad without traffic lightsTSAI JOHN·Filed 1989·Granted Sep 11, 1990·15 cites·4 claims
- 5044US2005031404A1Car wash deviceJET AIR IND·Filed 2003·Application pending·0 cites
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →