Inventor
Yun C. Chang
Inventor
Rochester, NY, US
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes28%
C09KMaterials for miscellaneous applications, not provided for elsewhere25%
E21BEarth or rock drilling17%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%
Y02PClimate change mitigation technologies in the production or processing of goods5%
B22FWorking metallic powder2%
B82YSpecific uses or applications of nanostructures2%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms2%
C22BProduction and refining of metals2%
C23CCoating metallic material2%
PatentTitleYear
10,550,311Encapsulated nanocompositions for increasing hydrocarbon recovery202010,550,310Encapsulated nanocompositions for increasing hydrocarbon recovery202010,538,693Stabilization of petroleum surfactants for enhancing oil recovery202010,508,227Controlled release of surfactants for enhanced oil recovery201910,400,158Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsules201910,125,307Stabilization of petroleum surfactants for enhancing oil recovery201810,093,851Encapsulation of an acid precursor for oil field applications201810,053,616Encapsulated nanocompositions for increasing hydrocarbon recovery201810,047,276Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsules20189,796,919'Encapsulation of an acid precursor for oil field applications'20179,580,639'Controlled release of surfactants for enhanced oil recovery'20179,546,316'Densifying carbon dioxide with a dispersion of carbon dioxide-philic water capsules'20178,946,132'Controlled release of surfactants for enhanced oil recovery'20158,869,894'Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirs'20148,662,173'Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirs'20147,329,301'Silver nanoparticles made in solvent'20087,074,622'Method and system for sorting and separating particles'20066,593,073'Core/shell emulsions with enhanced photographic response'20036,509,144'Fragmentable electron donor compounds combined with broad blue spectral sensitization'20036,048,683'Robust process for the preparation of high chloride emulsions'20005,908,739'Simplified nucleation of high chloride <100> tabular grain emulsions'19995,750,327'Mixed ripeners for silver halide emulsion formation'19985,744,297'High chloride (100) tabular grain emulsions containing large, thin tabular grains'19985,670,282'Method for forming silver halide grains with measurement of ion concentrations'19975,663,041'High chloride (100) tabular grain emulsions containing large, thin tabular grains and a process for their preparation'19975,494,788'Chemical and spectral sensitization of high-chloride tabular grains using high-temperature heat treatment'19965,413,904'High chloride [100] tabular grain emulsions improved emulsions and improved precipitation processes'19955,320,938'High chloride tabular grain emulsions and processes for their preparation'19945,298,385'High chloride folded tabular grain emulsions'19945,252,452'Process for the preparation of high chloride tabular grain emulsions'19935,250,408'Chloride containing tabular grains with holes and process for their preparation'19935,244,783'Rod-shaped hollow silver halide emulsions and method of making'19935,178,998'Process for the preparation of high chloride tabular grain emulsions (III)'19935,176,992'Process for the preparation of a grain stabilized high chloride tabular grain photographic emulsion (II)'19934,933,870'Digital silver ion concentration controller for the precipitation of silver halide emulsions'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2008Patents assigned to EASTMAN KODAK CO (20)· patent assignee history
1990–2008Based in Rochester, NY, US· patent location history
1993Based in Penfield, NY, US· patent location history
2014–2020Patents assigned to SAUDI ARABIAN OIL CO (15)· patent assignee history
2014Patents assigned to CHANG YUN (1)· patent assignee history
2014Based in SA· patent location history
2015Patents assigned to CHANG YUN CHEA (1)· patent assignee history
2015Patents assigned to KANJ MAZEN (1)· patent assignee history
2015–2020Based in Dhahran, SA· patent location history
2018–2020Based in Webster, NY, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EASTMAN KODAK CO | 20 | 1990–2008 |
| SAUDI ARABIAN OIL CO | 15 | 2014–2020 |
| CHANG YUNself | 1 | 2014 |
| CHANG YUN CHEAself | 1 | 2015 |
| KANJ MAZEN | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rochester, New York, US | 19 | 1990–2008 |
| Dhahran, SA | 11 | 2015–2020 |
| Webster, New York, US | 2 | 2018–2020 |
| SA | 2 | 2014 |
| Penfield, New York, US | 1 | 1993 |