Inventor

HIRAIWA KOJI

JP8 patents

⚠️ This page may combine multiple inventors who share the name “HIRAIWA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FURUKAWA ELECTRIC CO LTD

3 patents

US6177710B1Jan 23, 2001

Semiconductor waveguide type photodetector and method for manufacturing the same

FURUKAWA ELECTRIC CO LTD29 citations91

US7418020B2Aug 26, 2008

Surface emitting laser device

FURUKAWA ELECTRIC CO LTD4 citations61

US7885307B2Feb 8, 2011

Vertical-cavity surface-emitting semiconductor laser device

FURUKAWA ELECTRIC CO LTD3 citations60

TOSHIBA KK

1 patent

US4970047ANov 13, 1990

Fuel assembly for nuclear reactors

TOSHIBA KK25 citations88

HIRAIWA KOJI

1 patent

US8178364B2May 15, 2012

Testing method of surface-emitting laser device and testing device thereof

HIRAIWA KOJI3 citations56

TAKEO KAGEYAMA

1 patent

US8409998B2Apr 2, 2013

Method of manufacturing vertical-cavity surface emitting laser

TAKEO KAGEYAMA1 citations41

TAKAKI KEISHI

1 patent

US8204093B2Jun 19, 2012

Method of manufacturing vertical-cavity surface emitting laser and vertical-cavity surface emitting laser array

TAKAKI KEISHI0 citations35

TSUKIJI NAOKI

1 patent

US8270447B2Sep 18, 2012

Semiconductor light emitting element and manufacturing method thereof

TSUKIJI NAOKI0 citations33