Inventor
FUJII KEI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “FUJII KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
12 patentsUS9123843B2Sep 1, 2015
Semiconductor device
SUMITOMO ELECTRIC INDUSTRIES8 citations82
US9608148B2Mar 28, 2017
Semiconductor element and method for producing the same
SUMITOMO ELECTRIC INDUSTRIES3 citations73
US9773932B2Sep 26, 2017
Epitaxial wafer and method for manufacturing same
SUMITOMO ELECTRIC INDUSTRIES6 citations71
US12470046B2Nov 11, 2025
Vertical cavity surface-emitting laser
SUMITOMO ELECTRIC INDUSTRIES0 citations61
US10938181B2Mar 2, 2021
Vertical cavity surface emitting laser and method for manufacturing vertical cavity surface emitting laser
SUMITOMO ELECTRIC INDUSTRIES0 citations60
US9818895B2Nov 14, 2017
Semiconductor device, optical sensor device and semiconductor device manufacturing method
SUMITOMO ELECTRIC INDUSTRIES0 citations52
US9680040B2Jun 13, 2017
Semiconductor device and method for manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES1 citations52
US9159853B2Oct 13, 2015
Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial wafer
SUMITOMO ELECTRIC INDUSTRIES1 citations52
US9887310B2Feb 6, 2018
Semiconductor layered structure, method for producing semiconductor layered structure, and method for producing semiconductor device
SUMITOMO ELECTRIC INDUSTRIES1 citations51
US9698287B2Jul 4, 2017
Epitaxial wafer, method for producing the same, semiconductor element, and optical sensor device
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US9171978B2Oct 27, 2015
Epitaxial wafer, method for producing the same, photodiode, and optical sensor device
SUMITOMO ELECTRIC INDUSTRIES0 citations41
US10594110B2Mar 17, 2020
Vertical cavity surface emitting laser, method for fabricating vertical cavity surface emitting laser
SUMITOMO ELECTRIC INDUSTRIES0 citations40
FUJII KEI
5 patentsUS9040955B2May 26, 2015
Semiconductor device, optical sensor device and semiconductor device manufacturing method
FUJII KEI2 citations62
US9129808B2Sep 8, 2015
Epitaxial wafer, photodiode, optical sensor device, and methods for producing epitaxial wafer and photodiode
FUJII KEI3 citations61
US8461570B2Jun 11, 2013
Semiconductor device and manufacturing method thereof
FUJII KEI4 citations61
US8548021B2Oct 1, 2013
III-nitride semiconductor laser, and method for fabricating III-nitride semiconductor laser
FUJII KEI1 citations51
US9190544B2Nov 17, 2015
Photodiode, optical sensor device, and photodiode manufacturing method
FUJII KEI0 citations40
AKITA KATSUSHI
4 patentsUS8198623B2Jun 12, 2012
Photodiode array, method for manufacturing photodiode array, epitaxial wafer, and method for manufacturing epitaxial wafer
AKITA KATSUSHI2 citations61
US8866199B2Oct 21, 2014
Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial wafer
AKITA KATSUSHI1 citations51
US8822977B2Sep 2, 2014
Photodetector and method of manufacturing the photodetector
AKITA KATSUSHI0 citations51
US8309380B2Nov 13, 2012
Photodiode array, method for manufacturing photodiode array, epitaxial wafer, and method for manufacturing epitaxial wafer
AKITA KATSUSHI0 citations51