Inventor
HAMAGUCHI Tatsushi
JP42 patents
⚠️ This page may combine multiple inventors who share the name “HAMAGUCHI Tatsushi”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
36 patentsUS9893492B2Feb 13, 2018
Light emitting element and method of manufacturing the same
SONY CORP4 citations84
US12034274B2Jul 9, 2024
Light emitting element
SONY CORP2 citations73
US11611196B2Mar 21, 2023
Light emitting element
SONY CORP3 citations73
US11489314B2Nov 1, 2022
Light-emitting element and method of manufacturing the same
SONY CORP2 citations73
US11031752B2Jun 8, 2021
Surface-emitting laser and electronic apparatus
SONY CORP5 citations73
US10873174B2Dec 22, 2020
Light-emitting element and method of manufacturing the same
SONY CORP2 citations73
US9595810B2Mar 14, 2017
Light emitting element having multiple surface areas of a semiconductor layer and method of producing same
SONY CORP5 citations73
US9407067B2Aug 2, 2016
Light emitting element and method of manufacturing the same
SONY CORP3 citations73
US10170667B2Jan 1, 2019
Semiconductor optical device
SONY CORP2 citations71
US9917228B2Mar 13, 2018
Semiconductor optical device
SONY CORP2 citations71
US12362540B2Jul 15, 2025
Light emitting element
SONY CORP0 citations62
US12126137B2Oct 22, 2024
Light-emitting element and method of manufacturing the same
SONY CORP0 citations62
US11594859B2Feb 28, 2023
Light emitting element and light emitting element array
SONY CORP1 citations62
US11404849B2Aug 2, 2022
Light emitting element to control an oscillation wavelength
SONY CORP0 citations62
US11374384B2Jun 28, 2022
Light-emitting device and method of manufacturing light-emitting device
SONY CORP1 citations62
US11081862B2Aug 3, 2021
Light emitting element and method of manufacturing the same
SONY CORP0 citations62
US10826275B2Nov 3, 2020
Surface emitting laser element
SONY CORP1 citations62
US9252566B2Feb 2, 2016
Method of manufacturing light emitting element
SONY CORP2 citations62
US12119617B2Oct 15, 2024
Light emitting element
SONY CORP0 citations52
US12088059B2Sep 10, 2024
Light emitting element
SONY CORP0 citations52
US11979001B2May 7, 2024
Surface-emitting semiconductor laser
SONY CORP0 citations52
US11728625B2Aug 15, 2023
Light emitting element
SONY CORP0 citations52
US11411372B2Aug 9, 2022
Light emitting element and manufacturing method therefor
SONY CORP0 citations52
US11309686B2Apr 19, 2022
Surface emitting laser and method of manufacturing the same
SONY CORP0 citations52
US11011888B2May 18, 2021
Light-emitting device and light-emitting apparatus
SONY CORP0 citations52
US10541513B2Jan 21, 2020
Light emitting element and method of manufacturing the same
SONY CORP0 citations52
US9515455B2Dec 6, 2016
Method of manufacturing light emitting element
SONY CORP0 citations52
US10700497B2Jun 30, 2020
Optical semiconductor device
SONY CORP0 citations51
US10637209B2Apr 28, 2020
Light emitting element
SONY CORP0 citations51
US10256609B2Apr 9, 2019
Surface light-emitting laser
SONY CORP0 citations51
US10199799B2Feb 5, 2019
Light emitting element
SONY CORP0 citations51
US10109984B2Oct 23, 2018
Optical semiconductor device
SONY CORP0 citations51
US9882352B2Jan 30, 2018
Light emitting element
SONY CORP0 citations51
US10546975B2Jan 28, 2020
Semiconductor optical device
SONY CORP0 citations50
US10199800B2Feb 5, 2019
Light emitting element
SONY CORP0 citations41
US10141721B2Nov 27, 2018
Light-emitting element and manufacturing method thereof
SONY CORP0 citations41
SONY GROUP CORP
4 patentsUS12519287B2Jan 6, 2026
VCSEL with anisotropic curved mirror
SONY GROUP CORP0 citations57
US12586986B2Mar 24, 2026
Light-emitting device
SONY GROUP CORP0 citations52
US12334706B2Jun 17, 2025
Light emitting element, light emitting element array, and method of manufacturing light emitting element array
SONY GROUP CORP0 citations52
US12224558B2Feb 11, 2025
Light emitting element and method for manufacturing same
SONY GROUP CORP0 citations52
SUMITOMO ELECTRIC INDUSTRIES
2 patentsUS9379523B2Jun 28, 2016
Group III nitride semiconductor device, p-type contact structure, and method for fabricating group III nitride semiconductor device
SUMITOMO ELECTRIC INDUSTRIES1 citations52
US9425348B2Aug 23, 2016
Group III nitride semiconductor device, and method for fabricating group III nitride semiconductor device
SUMITOMO ELECTRIC INDUSTRIES1 citations51