Inventor
Chung-En Zah
Inventor
Holmdel, NJ, US
Overview
Patents· 55 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Sprimary
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light43%
B82YSpecific uses or applications of nanostructures23%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
G02BOptical elements, systems or apparatus4%
H04NPictorial communication, e.g. television4%
H10HInorganic light-emitting semiconductor devices having potential barriers4%
H04BTransmission3%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h103%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%
G01RMeasuring electric variables2%
PatentTitleYear
10,811,845Surface emitting multiwavelength distributed-feedback concentric ring lasers202010,431,957Multiwavelength quantum cascade laser via growth of different active and passive cores20199,948,063Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages20189,917,421'P-type isolation regions adjacent to semiconductor laser facets'20189,865,990'Monolithic wide wavelength tunable mid-IR laser sources'20189,685,766'Multiwavelength quantum cascade laser via growth of different active and passive cores'20179,601,901'Passive waveguide structure with alternating GaInAs/AlInAs layers for mid-infrared optoelectronic devices'20179,548,590'Quantum cascade laser design with stepped well active region'20179,547,124'Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages'20179,455,551'Mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages'20169,385,509'Monolithic wide wavelength tunable mid-IR laser sources'20169,231,368'Passive waveguide structure with alternating GaInAs/AlInAs layers for mid-infrared optoelectronic devices'20169,172,211'Heating elements for multi-wavelength DBR laser'20159,042,416'High-power low-loss GRINSCH laser'20158,897,329'Group III nitride-based green-laser diodes and waveguide structures thereof'20148,670,109'Laser characterization system and process'20148,514,902'P-type isolation between QCL regions'20138,391,330'Fracture resistant metallization pattern for semiconductor lasers'20138,379,684'Hole blocking layers in non-polar and semi-polar green light emitting devices'20138,358,673'Strain balanced laser diode'20138,217,498'Gallium nitride semiconductor device on SOI and process for making same'20128,198,112'Laser diodes comprising QWI output window and waveguide areas and methods of manufacture'20128,121,165'MQW laser structure comprising plural MQW regions'20128,121,169'Split control of front and rear DBR grating portions'20127,981,591'Semiconductor buried grating fabrication method'20117,983,317'MQW laser structure comprising plural MQW regions'20117,965,752'Native green laser semiconductor devices'20117,833,695'Methods of fabricating metal contact structures for laser diodes using backside UV exposure'20107,723,139'Quantum well intermixing'20107,615,389'GaN lasers on ALN substrates and methods of fabrication'20097,567,595'Laser source with interdigital heater electrodes and underlying current confinement layer'20097,505,492'Alignment of lasing wavelength with wavelength conversion peak using modulated wavelength control signal'20097,502,394'System and method for modulating a semiconductor laser'20097,486,709'Semiconductor laser micro-heating element structure'20097,483,458'Wavelength control in semiconductor lasers'20097,480,317'Thermal compensation in semiconductor lasers'20097,436,871'Method and device for performing wavelength modulation with Distributed Bragg Reflector (DBR) laser'20087,400,659'Method and device for performing DBR laser wavelength modulation free of thermal effect'20087,388,892'System and method for optically powering a remote network component'20087,256,879'Semiconductor array tester'20077,072,376'Method of manufacturing an InP based vertical cavity surface emitting laser and device produced therefrom'20066,618,409'Passivation of semiconductor laser facets'20036,501,260'Bar tester'20026,434,175'Multiwavelength distributed bragg reflector phased array laser'20026,304,587'Buried ridge semiconductor laser with aluminum-free confinement layer'20016,295,308'Wavelength-locked external cavity lasers with an integrated modulator'20016,075,592'Fiber-optics based micro-photoluminescence system'20005,946,331'Integrated multi-wavelength transmitter'19995,805,755'Self-aligned transition from ridge to buried heterostructure waveguide, especially for multi-wavelength laser array integration'19985,612,968'Redundant multi-wavelength laser arrays'19975,541,949'Strained algainas quantum-well diode lasers'19965,381,434'High-temperature, uncooled diode laser'19955,117,469'Polarization-dependent and polarization-diversified opto-electronic devices using a strained quantum well'19925,065,200'Geometry dependent doping and electronic devices produced thereby'19914,965,525'Angled-facet flared-waveguide traveling-wave laser amplifiers'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1997Patents assigned to BELL COMMUNICATIONS RES (6)· patent assignee history
1990–1992Based in Marlboro, NJ, US· patent location history
1995–2020Based in Holmdel, NJ, US· patent location history
2001–2017Patents assigned to CORNING INC (34)· patent assignee history
2012–2015Patents assigned to ZAH CHUNG-EN (11)· patent assignee history
2012–2014Patents assigned to BHAT RAJARAM (5)· patent assignee history
2015–2020Patents assigned to THORLABS QUANTUM ELECTRONICS INC (13)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CORNING INC | 34 | 2001–2017 |
| THORLABS QUANTUM ELECTRONICS INC | 13 | 2015–2020 |
| ZAH CHUNG-ENself | 11 | 2012–2015 |
| BELL COMMUNICATIONS RES | 6 | 1990–1997 |
| BHAT RAJARAM | 5 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Holmdel, New Jersey, US | 52 | 1995–2020 |
| Marlboro, New Jersey, US | 3 | 1990–1992 |