P

Inventor

SAKAMAKI YOHEI

JP14 patents
⚠️ This page may combine multiple inventors who share the name “SAKAMAKI YOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON TELEGRAPH & TELEPHONE

4 patents
US7899279B2Mar 1, 2011

Optical delay line interferometer

NIPPON TELEGRAPH & TELEPHONE23 citations92
US7856163B2Dec 21, 2010

Planar lightwave circuit, design method for wave propagation circuit, and computer program

NIPPON TELEGRAPH & TELEPHONE6 citations73
US7580597B2Aug 25, 2009

Optical functional circuit

NIPPON TELEGRAPH & TELEPHONE2 citations62
US12181737B2Dec 31, 2024

Optical switching apparatus

NIPPON TELEGRAPH & TELEPHONE0 citations50

SAKAMAKI YOHEI

3 patents
US8588560B2Nov 19, 2013

Optical 90-degree hybrid circuit

SAKAMAKI YOHEI6 citations71
US8971677B2Mar 3, 2015

Optical 90-degree hybrid circuit

SAKAMAKI YOHEI4 citations70
US8649640B2Feb 11, 2014

Optical 90-degree hybrid circuit

SAKAMAKI YOHEI1 citations49

SAIDA TAKASHI

3 patents
US8463097B2Jun 11, 2013

Planar lightwave circuit, design method for wave propagation circuit, and computer program

SAIDA TAKASHI2 citations60
US8554040B2Oct 8, 2013

Planar lightwave circuit, design method for wave propagation circuit, and computer program

SAIDA TAKASHI0 citations50
US8538222B2Sep 17, 2013

Planar lightwave circuit, design method for wave propagation circuit, and computer program

SAIDA TAKASHI0 citations50

KITOH TSUTOMU

2 patents
US8483525B2Jul 9, 2013

Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication system

KITOH TSUTOMU10 citations81
US8737779B2May 27, 2014

Optical wavelength multi/demultiplexer

KITOH TSUTOMU1 citations49

NASU YUSUKE

1 patent
US8150219B2Apr 3, 2012

Waveguide-type optical interferometer

NASU YUSUKE24 citations90

DOI YOSHIYUKI

1 patent
US8467635B2Jun 18, 2013

Optical modulator

DOI YOSHIYUKI5 citations69