Inventor · disambiguated record
Jeffrey C. Chang
Also filed as: CHANG JEFFREY · CHANG JEFFREY C · CHANG JEFFREY CHIJIEH
44 granted patents·8 pending applications·1,750 citations·filing 1978–2019
99Inventor score
Files withMINNESOTA MINING & MFG233M INNOVATIVE PROPERTIES CO19SPATIAL DIGITAL SYSTEMS INC5AGIGA TECH INC1CHANG DONALD C D1
Top patents by PatentIndex Score
52 records- 0198US6239907B1Rear projection screen using birefringent optical film for asymmetric light scattering3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted May 29, 2001·101 cites·32 claims
- 0298US5521035AMethods for preparing color filter elements using laser induced transfer of colorants with associated liquid crystal display deviceMINNESOTA MINING & MFG·Filed 1994·Granted May 28, 1996·191 cites·35 claims
- 0398US5278023APropellant-containing thermal transfer donor elementsMINNESOTA MINING & MFG·Filed 1992·Granted Jan 11, 1994·181 cites·39 claims
- 0497US6242152B1Thermal transfer of crosslinked materials from a donor to a receptor3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Jun 5, 2001·100 cites·35 claims
- 0597US5725989ALaser addressable thermal transfer imaging element with an interlayerFiled 1996·Granted Mar 10, 1998·176 cites·16 claims
- 0696US6866979B2Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Mar 15, 2005·28 cites·41 claims
- 0796US6461793B2Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Oct 8, 2002·29 cites·17 claims
- 0896US6163402ARear projection screen3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Dec 19, 2000·105 cites·16 claims
- 0996US5695907ALaser addressable thermal transfer imaging element and methodMINNESOTA MINING & MFG·Filed 1996·Granted Dec 9, 1997·83 cites·19 claims
- 1095US6270934B1Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Aug 7, 2001·46 cites·25 claims
- 1194US6582877B2Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Jun 24, 2003·20 cites·20 claims
- 1293US5981136ALaser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Nov 9, 1999·36 cites·11 claims
- 1391US6099994ALaser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Aug 8, 2000·29 cites·3 claims
- 1490US6221543B1Process for making active substrates for color displays3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Apr 24, 2001·108 cites·15 claims
- 1590US6190826B1Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Feb 20, 2001·43 cites·9 claims
- 1689US5411787AWater based transparent image recording sheetMINNESOTA MINING & MFG·Filed 1993·Granted May 2, 1995·43 cites·20 claims
- 1789US4206083ACatalyst for ozone decompositionMINNESOTA MINING & MFG·Filed 1978·Granted Jun 3, 1980·46 cites·4 claims
- 1886US4348360ACatalytic converter for ozone removal in aircraftMINNESOTA MINING & MFG·Filed 1979·Granted Sep 7, 1982·56 cites·13 claims
- 1984US5372987AThermal receptor sheet and process of useMINNESOTA MINING & MFG·Filed 1992·Granted Dec 13, 1994·37 cites·10 claims
- 2080US6692647B2Light dispersing film and method of manufacture3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Feb 17, 2004·22 cites·21 claims
- 2180US6344263B1Light dispersing film and method of manufacture3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Feb 5, 2002·39 cites·38 claims
- 2280US5460918AThermal transfer donor and receptor with silicated surface for lithographic printing applicationsMINNESOTA MINING & MFG·Filed 1994·Granted Oct 24, 1995·36 cites·27 claims
- 2379US5372985AThermal transfer systems having delaminating coatingsMINNESOTA MINING & MFG·Filed 1993·Granted Dec 13, 1994·20 cites·10 claims
- 2477US7226716B2Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2005·Granted Jun 5, 2007·2 cites·2 claims
- 2577US4822643AThermal transfer imaging systemMINNESOTA MINING & MFG·Filed 1987·Granted Apr 18, 1989·38 cites·18 claims
- 2675US5455217ATransparentizable thermal insulating film for thermal transfer imagingMINNESOTA MINING & MFG·Filed 1994·Granted Oct 3, 1995·23 cites·29 claims
- 2767US2007128383A1Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2007·Application pending·0 cites
- 2865US6515798B1Rear projection screen3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Feb 4, 2003·6 cites·4 claims
- 2965US5180705ATransfer imaging using metal-azo and metal-azomethine dyesMINNESOTA MINING & MFG·Filed 1991·Granted Jan 19, 1993·13 cites·12 claims
- 3063US5645963AMethod for making color filter elements using laminable colored photosensitive materialsMINNESOTA MINING & MFG·Filed 1995·Granted Jul 8, 1997·22 cites·7 claims
- 3162US11017886B2Health information exchange system and methodPETER CHANG ENTPR INC·Filed 2013·Granted May 25, 2021·1 cites·43 claims
- 3261US10516872B2Digital enveloping for digital right management and re-broadcastingSPATIAL DIGITAL SYSTEMS INC·Filed 2019·Granted Dec 24, 2019·0 cites·20 claims
- 3359US5424269AThermal transfer systems having delaminating coatingsMINNESOTA MINING & MFG·Filed 1994·Granted Jun 13, 1995·7 cites·4 claims
- 3457US5783519AThermal transfer systems having vanadium oxide antistatic layersMINNESOTA MINING & MFG·Filed 1996·Granted Jul 21, 1998·11 cites·4 claims
- 3555US5494774AThermal transfer donor and receptor for lithographic printing applicationsMINNESOTA MINING & MFG·Filed 1995·Granted Feb 27, 1996·11 cites·16 claims
- 3653US5225392ADual process thermal transfer imagingMINNESOTA MINING & MFG·Filed 1992·Granted Jul 6, 1993·8 cites·11 claims
- 3753US2003207198A1Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2003·Application pending·0 cites
- 3850US10289856B2Digital enveloping for digital right management and re-broadcastingCHANG DONALD C D·Filed 2014·Granted May 14, 2019·0 cites·20 claims
- 3949US5587351AThermal transfer systems having vanadium oxide antistatic layersMINNESOTA MINING & MFG·Filed 1994·Granted Dec 24, 1996·4 cites·16 claims
- 4048US5409883AProcess for the manufacture of multi-color donor elements for thermal transfer systemsMINNESOTA MINING & MFG·Filed 1993·Granted Apr 25, 1995·13 cites·23 claims
- 4145US5589433AThermal transfer systems having vanadium oxide antistatic layersMINNESOTA MINING & MFG·Filed 1994·Granted Dec 31, 1996·6 cites·8 claims
- 4245US2005153081A1Laser addressable thermal transfer imaging element with an interlayer3M INNOVATIVE PROPERTIES CO·Filed 2004·Application pending·0 cites
- 4340US10264052B2Enveloping for device independenceSPATIAL DIGITAL SYSTEMS INC·Filed 2015·Granted Apr 16, 2019·0 cites·20 claims
- 4437US2016048371A1Enveloping via Digital AudioSPATIAL DIGITAL SYSTEMS INC·Filed 2015·Application pending·0 cites
- 4537US2016048701A1Enveloping for remote Digital CameraSPATIAL DIGITAL SYSTEMS INC·Filed 2015·Application pending·0 cites
- 4637US2016048697A1Enveloping and de-enveloping for Digital Photos via Wavefront MuxingSPATIAL DIGITAL SYSTEMS INC·Filed 2015·Application pending·0 cites
- 4734US5405822AThermal transfer cyan donor elementMINNESOTA MINING & MFG·Filed 1993·Granted Apr 11, 1995·3 cites·10 claims
- 4834US5232892ADye receptor sheet for thermal dye transfer imagingMINNESOTA MINING & MFG·Filed 1991·Granted Aug 3, 1993·5 cites·15 claims
- 4933US2017160300A1Lateral flow / immuno-chromatographic strip service and cassette analysis device system, method and computer readable mediumFIO CORP·Filed 2015·Application pending·0 cites
- 5032US11301015B2Multiport energy supply for a nonvolatile memory moduleAGIGA TECH INC·Filed 2016·Granted Apr 12, 2022·0 cites·18 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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