P

Inventor

TAKAKI KEISHI

JP21 patents
⚠️ This page may combine multiple inventors who share the name “TAKAKI KEISHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FURUKAWA ELECTRIC CO LTD

12 patents
US7180930B2Feb 20, 2007

DFB semiconductor laser device having ununiform arrangement of a diffraction grating

FURUKAWA ELECTRIC CO LTD18 citations82
US9653589B2May 16, 2017

Semiconductor multi-layer substrate, semiconductor device, and method for manufacturing the same

FURUKAWA ELECTRIC CO LTD8 citations81
US9911842B2Mar 6, 2018

Nitride semiconductor device, production method thereof, diode, and field effect transistor

FURUKAWA ELECTRIC CO LTD8 citations80
US7888145B2Feb 15, 2011

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

FURUKAWA ELECTRIC CO LTD2 citations62
US7907653B2Mar 15, 2011

Vertical cavity surface emitting laser device and vertical cavity surface emitting laser array

FURUKAWA ELECTRIC CO LTD6 citations61
US7418020B2Aug 26, 2008

Surface emitting laser device

FURUKAWA ELECTRIC CO LTD4 citations61
US7881353B2Feb 1, 2011

Surface emitting laser element array

FURUKAWA ELECTRIC CO LTD4 citations59
US8532155B2Sep 10, 2013

Optical interconnection system

FURUKAWA ELECTRIC CO LTD1 citations51
US11139632B2Oct 5, 2021

Optical module and light output device

FURUKAWA ELECTRIC CO LTD0 citations50
US7801198B2Sep 21, 2010

Surface emitting laser element and method of fabricating the same

FURUKAWA ELECTRIC CO LTD1 citations48
US7593448B2Sep 22, 2009

Semiconductor laser module and optical transmission apparatus using the semiconductor laser module

FURUKAWA ELECTRIC CO LTD0 citations41
US8941149B2Jan 27, 2015

Semiconductor device

FURUKAWA ELECTRIC CO LTD0 citations40

SHIMIZU HITOSHI

2 patents

TAKAKI KEISHI

2 patents

FUJI ELECTRIC CO LTD

1 patent

IMAI SUGURU

1 patent

HIRAIWA KOJI

1 patent

SUZUKI TOSHIHITO

1 patent

TSUKIJI NAOKI

1 patent