Inventor
Robert P. H. Chang
Inventor
Glenview, IL, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry9%
C10GCracking hydrocarbon oils7%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h107%
B82YSpecific uses or applications of nanostructures6%
H01LSemiconductor devices6%
H10KOrganic electric solid-state devices6%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution6%
C01BNon-metallic elements4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
H01GCapacitors4%
PatentTitleYear
10,243,660Ultrafast all-optical modulation of the visible and infrared spectrum with nanorod arrays201910,115,917Dopant-free polymeric hole-transporting materials for perovskite solar cell20189,966,198Solar cells with perovskite-based light sensitization layers20189,803,136'Liquid electrolyte-free, solid-state solar cells with inorganic hole transport materials'20178,895,848'p-Type semiconducting nickel oxide as an efficiency-enhancing anodal interfacial layer in bulk heterojunction solar cells'20147,448,603'Feedstream inlet sparger for reaction vessel used in hydroconversion of fossil fuels'20087,449,155'Reactor cup shell-in-shell riser for reaction vessel used in hydroconversion of fossil fuels'20087,370,847'Grid plate bubble cap for reaction vessel used in hydroconversion of fossil fuels'20087,350,962'Liquid recycle inlet distributor assembly'20086,960,325'Apparatus for hydrocracking and/or hydrogenating fossil fuels'20056,765,949'Carbon nanostructures and methods of preparation'20045,962,132'Silica nanoparticles obtained from a method involving a direct current electric arc in an oxygen-containing atmosphere'19995,916,642'Method of encapsulating a material in a carbon nanotube'19995,770,022'Method of making silica nanoparticles'19984,941,944'Method for continuous countercurrent ogranosolv saccharification of comminuted lignocellulosic materials'19904,483,725'Reactive vapor deposition of multiconstituent material'19844,361,461'Hydrogen etching of semiconductors and oxides'19824,300,989'Fluorine enhanced plasma growth of native layers on silicon'19814,246,296'Controlling the properties of native films using selective growth chemistry'19814,144,634'Fabrication of gallium arsenide MOS devices'19794,062,747'Native growth of semiconductor oxide layers'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1982Patents assigned to BELL TELEPHONE LABOR INC (5)· patent assignee history
1977–1984Based in Warren, NJ, US· patent location history
1984Patents assigned to AT & T BELL LAB (1)· patent assignee history
1990Based in Burnaby, CA· patent location history
1998–2019Patents assigned to UNIV NORTHWESTERN (8)· patent assignee history
1998–2019Based in Glenview, IL, US· patent location history
2005–2008Based in West Windsor, NJ, US· patent location history
2008Patents assigned to HYDROCARBON TECHNOLOGIES INNOV (4)· patent assignee history
2014Patents assigned to BUCHHOLZ DONALD B (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV NORTHWESTERN | 8 | 1998–2019 |
| BELL TELEPHONE LABOR INC | 5 | 1977–1982 |
| HYDROCARBON TECHNOLOGIES INNOV | 4 | 2008 |
| AT & T BELL LAB | 1 | 1984 |
| BUCHHOLZ DONALD B | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Glenview, Illinois, US | 9 | 1998–2019 |
| Warren, New Jersey, US | 6 | 1977–1984 |
| West Windsor, New Jersey, US | 5 | 2005–2008 |
| Burnaby, CA | 1 | 1990 |