Inventor · disambiguated record
Ifay F. Chang
Also filed as: CHANG IFAY · CHANG IFAY F · CHANG IFAY FAY
16 granted patents·2 pending applications·615 citations·filing 1975–2008
95Inventor score
Top patents by PatentIndex Score
18 records- 0194US8138886B1Communication enabled active lock systemCHANG IFAY F·Filed 2008·Granted Mar 20, 2012·40 cites·15 claims
- 0291US4792728ACathodoluminescent garnet lampIBM·Filed 1985·Granted Dec 20, 1988·58 cites·16 claims
- 0390US4767192ALight activated light valve with a silicon control elementIBM·Filed 1986·Granted Aug 30, 1988·74 cites·10 claims
- 0488US5764223ATouch-screen input device using the monitor as a light source operating at an intermediate frequencyIBM·Filed 1995·Granted Jun 9, 1998·158 cites·6 claims
- 0587US7065070B1Method and system for establishing a voice communication service for business transactions and commerce applicationsCHANG IFAY F·Filed 2001·Granted Jun 20, 2006·51 cites·19 claims
- 0684US4642459ALight pen input system having two-threshold light sensingIBM·Filed 1985·Granted Feb 10, 1987·88 cites·27 claims
- 0780US7643435B1Method and system for establishing a voice communication solution for business transactions and commerce applicationsCHANG IFAY F·Filed 2006·Granted Jan 5, 2010·8 cites·2 claims
- 0878US7325029B1Methods for enabling e-commerce voice communicationCHANG IFAY F·Filed 2000·Granted Jan 29, 2008·20 cites·14 claims
- 0978US4155030AMulticolor display device using electroluminescent phosphor screen with internal memory and high resolutionIBM·Filed 1977·Granted May 15, 1979·28 cites·13 claims
- 1070US4035774ABistable electroluminescent memory and display deviceIBM·Filed 1975·Granted Jul 12, 1977·23 cites·20 claims
- 1169US8567787B1Word scramble games for stimulating brain and physical healthCHANG IFAY FAY·Filed 2002·Granted Oct 29, 2013·19 cites·12 claims
- 1262US2010183131A1Methods for enabling e-commerce voice communicationIPO2U COM INC·Filed 2007·Application pending·0 cites
- 1359US4231892AManganese doped zinc silicate luminescent phosphors with III-V oxide substitutionsIBM·Filed 1979·Granted Nov 4, 1980·15 cites·5 claims
- 1456US4500955AFull word coding for information processingIBM·Filed 1981·Granted Feb 19, 1985·21 cites·3 claims
- 1556US2011103368A1Methods for enabling e-commerce voice communicationIPO2U COM INC·Filed 2007·Application pending·0 cites
- 1648US4440831AZinc silicate phosphor particles and method for making themIBM·Filed 1981·Granted Apr 3, 1984·10 cites·17 claims
- 1737US4149108AMultistable cathode ray type storage display deviceIBM·Filed 1977·Granted Apr 10, 1979·2 cites·9 claims
- 1830US4491762AFlat storage CRT and projection displayIBM·Filed 1982·Granted Jan 1, 1985·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →