Inventor · disambiguated record
Yun Chang
Also filed as: CHANG YUN · CHANG YUN C · CHANG YUN CHEA
36 granted patents·3 pending applications·326 citations·filing 1988–2019
97Inventor score
Top patents by PatentIndex Score
39 records- 0197US5320938AHigh chloride tabular grain emulsions and processes for their preparationEASTMAN KODAK CO·Filed 1993·Granted Jun 14, 1994·77 cites·85 claims
- 0296US9580639B2Controlled release of surfactants for enhanced oil recoverySAUDI ARABIAN OIL CO·Filed 2013·Granted Feb 28, 2017·16 cites·13 claims
- 0393US8946132B2Controlled release of surfactants for enhanced oil recoveryCHANG YUN CHEA·Filed 2011·Granted Feb 3, 2015·26 cites·20 claims
- 0493US5413904AHigh chloride [100] tabular grain emulsions improved emulsions and improved precipitation processesEASTMAN KODAK CO·Filed 1994·Granted May 9, 1995·28 cites·3 claims
- 0591US9796919B2Encapsulation of an acid precursor for oil field applicationsSAUDI ARABIAN OIL CO·Filed 2015·Granted Oct 24, 2017·5 cites·9 claims
- 0690US5178998AProcess for the preparation of high chloride tabular grain emulsions (III)EASTMAN KODAK CO·Filed 1991·Granted Jan 12, 1993·20 cites·17 claims
- 0789US10053616B2Encapsulated nanocompositions for increasing hydrocarbon recoverySAUDI ARABIAN OIL CO·Filed 2016·Granted Aug 21, 2018·3 cites·18 claims
- 0887US9546316B2Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsulesSAUDI ARABIAN OIL CO·Filed 2013·Granted Jan 17, 2017·4 cites·16 claims
- 0986US10508227B2Controlled release of surfactants for enhanced oil recoverySAUDI ARABIAN OIL CO·Filed 2017·Granted Dec 17, 2019·2 cites·7 claims
- 1086US5663041AHigh chloride (100) tabular grain emulsions containing large, thin tabular grains and a process for their preparationEASTMAN KODAK CO·Filed 1996·Granted Sep 2, 1997·12 cites·6 claims
- 1184US7329301B2Silver nanoparticles made in solventEASTMAN KODAK CO·Filed 2004·Granted Feb 12, 2008·28 cites·38 claims
- 1282US10125307B2Stabilization of petroleum surfactants for enhancing oil recoverySAUDI ARABIAN OIL CO·Filed 2016·Granted Nov 13, 2018·2 cites·11 claims
- 1381US5176992AProcess for the preparation of a grain stabilized high chloride tabular grain photographic emulsion (II)EASTMAN KODAK CO·Filed 1992·Granted Jan 5, 1993·12 cites·11 claims
- 1480US7074622B2Method and system for sorting and separating particlesEASTMAN KODAK CO·Filed 2004·Granted Jul 11, 2006·22 cites·48 claims
- 1577US10093851B2Encapsulation of an acid precursor for oil field applicationsSAUDI ARABIAN OIL CO·Filed 2017·Granted Oct 9, 2018·2 cites·13 claims
- 1675US11060014B2Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsulesSAUDI ARABIAN OIL CO·Filed 2019·Granted Jul 13, 2021·1 cites·18 claims
- 1775US8662173B2Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirsZHOU XIANMIN JOE·Filed 2011·Granted Mar 4, 2014·4 cites·23 claims
- 1875US5744297AHigh chloride (100) tabular grain emulsions containing large, thin tabular grainsEASTMAN KODAK CO·Filed 1997·Granted Apr 28, 1998·6 cites·7 claims
- 1975US5250408AChloride containing tabular grains with holes and process for their preparationEASTMAN KODAK CO·Filed 1992·Granted Oct 5, 1993·9 cites·24 claims
- 2073US10954429B2Controlled release of surfactants for enhanced oil recoverySAUDI ARABIAN OIL CO·Filed 2019·Granted Mar 23, 2021·0 cites·8 claims
- 2172US5252452AProcess for the preparation of high chloride tabular grain emulsionsEASTMAN KODAK CO·Filed 1992·Granted Oct 12, 1993·8 cites·17 claims
- 2270US5244783ARod-shaped hollow silver halide emulsions and method of makingEASTMAN KODAK CO·Filed 1992·Granted Sep 14, 1993·7 cites·24 claims
- 2369US10550310B2Encapsulated nanocompositions for increasing hydrocarbon recoverySAUDI ARABIAN OIL CO·Filed 2018·Granted Feb 4, 2020·0 cites·30 claims
- 2469US10400158B2Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsulesSAUDI ARABIAN OIL CO·Filed 2018·Granted Sep 3, 2019·0 cites·17 claims
- 2567US10550311B2Encapsulated nanocompositions for increasing hydrocarbon recoverySAUDI ARABIAN OIL CO·Filed 2018·Granted Feb 4, 2020·0 cites·12 claims
- 2665US10047276B2Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsulesSAUDI ARABIAN OIL CO·Filed 2016·Granted Aug 14, 2018·0 cites·7 claims
- 2764US10538693B2Stabilization of petroleum surfactants for enhancing oil recoverySAUDI ARABIAN OIL CO·Filed 2018·Granted Jan 21, 2020·0 cites·13 claims
- 2861US4933870ADigital silver ion concentration controller for the precipitation of silver halide emulsionsEASTMAN KODAK CO·Filed 1988·Granted Jun 12, 1990·22 cites·4 claims
- 2956US8869894B2Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirsSAUDI ARABIAN OIL CO·Filed 2014·Granted Oct 28, 2014·0 cites·13 claims
- 3056US5750327AMixed ripeners for silver halide emulsion formationEASTMAN KODAK CO·Filed 1996·Granted May 12, 1998·3 cites·6 claims
- 3156US2008026028A1Antimicrobial silver halide compositionSCHROEDER KURT M·Filed 2007·Application pending·0 cites
- 3249US2006068024A1Antimicrobial silver halide compositionSCHROEDER KURT M·Filed 2004·Application pending·0 cites
- 3348US6509144B1Fragmentable electron donor compounds combined with broad blue spectral sensitizationEASTMAN KODAK CO·Filed 1999·Granted Jan 21, 2003·2 cites·47 claims
- 3446US5494788AChemical and spectral sensitization of high-chloride tabular grains using high-temperature heat treatmentEASTMAN KODAK CO·Filed 1994·Granted Feb 27, 1996·2 cites·12 claims
- 3544US2006068025A1Silver microribbon composition and method of makingEASTMAN KODAK CO·Filed 2004·Application pending·0 cites
- 3643US5908739ASimplified nucleation of high chloride <100> tabular grain emulsionsEASTMAN KODAK CO·Filed 1997·Granted Jun 1, 1999·1 cites·11 claims
- 3737US5298385AHigh chloride folded tabular grain emulsionsEASTMAN KODAK CO·Filed 1993·Granted Mar 29, 1994·2 cites·4 claims
- 3831US6593073B1Core/shell emulsions with enhanced photographic responseEASTMAN KODAK CO·Filed 1999·Granted Jul 15, 2003·0 cites·22 claims
- 3919US5670282AMethod for forming silver halide grains with measurement of ion concentrationsEASTMAN KODAK CO·Filed 1995·Granted Sep 23, 1997·0 cites·6 claims
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