Inventor
SAKUMA KEN
JP33 patents
⚠️ This page may combine multiple inventors who share the name “SAKUMA KEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJIKURA LTD
17 patentsUS7597821B2Oct 6, 2009
Oxynitride phosphor and a light emitting device
FUJIKURA LTD8 citations84
US6945078B2Sep 20, 2005
Optical waveguide in the interior of silica glass and method of forming optical waveguide
FUJIKURA LTD13 citations81
US7402943B2Jul 22, 2008
Oxynitride phosphor and a light emitting device
FUJIKURA LTD7 citations74
US11450957B2Sep 20, 2022
Wireless communication device
FUJIKURA LTD3 citations73
US11018718B1May 25, 2021
Wireless communication device and wireless communication method
FUJIKURA LTD2 citations73
US8053970B2Nov 8, 2011
Light emitting device and illumination device
FUJIKURA LTD3 citations63
US7564065B2Jul 21, 2009
Light emitting device and a lighting apparatus
FUJIKURA LTD2 citations63
US11463140B2Oct 4, 2022
Wireless communication device
FUJIKURA LTD0 citations62
US10944456B1Mar 9, 2021
Wireless communication device
FUJIKURA LTD1 citations62
US7608862B2Oct 27, 2009
Light emitting device and a lighting apparatus
FUJIKURA LTD6 citations62
US7046872B2May 16, 2006
Optical switch, optical add-drop module, and optical communication system
FUJIKURA LTD6 citations59
US6741775B2May 25, 2004
Optical switch
FUJIKURA LTD4 citations58
US7046881B2May 16, 2006
Manufacturing method for optical coupler/splitter and method for adjusting optical characteristics of planar lightwave circuit device
FUJIKURA LTD5 citations57
US12463340B2Nov 4, 2025
Phased array antenna module
FUJIKURA LTD0 citations52
US11438050B2Sep 6, 2022
Wireless communication system
FUJIKURA LTD0 citations52
US12431620B2Sep 30, 2025
Phased array antenna
FUJIKURA LTD0 citations51
US8542970B2Sep 24, 2013
Planar optical waveguide element, chromatic dispersion compensator, optical filter, optical resonator and methods for designing the element, chromatic dispersion compensator, optical filter and optical resonator
FUJIKURA LTD0 citations42
SAKUMA KEN
7 patentsUS5243898ASep 14, 1993
Pressurized fryer device
SAKUMA KEN27 citations92
US5676042AOct 14, 1997
Apparatus for producing fried food product
SAKUMA KEN47 citations89
US8404133B2Mar 26, 2013
Manufacturing method of planar optical waveguide device with grating structure
SAKUMA KEN5 citations70
US5417084AMay 23, 1995
Vacuum concentrating plant
SAKUMA KEN9 citations70
US8057705B2Nov 15, 2011
Sialon phosphor
SAKUMA KEN3 citations62
US8227178B2Jul 24, 2012
Manufacturing method of planar optical waveguide device with grating structure
SAKUMA KEN4 citations60
US8508119B2Aug 13, 2013
Phosphor and an incandescent lamp color light emitting diode lamp using the same
SAKUMA KEN0 citations51
OGAWA KENSUKE
3 patentsUS8270790B2Sep 18, 2012
Planar optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator
OGAWA KENSUKE8 citations82
US8270789B2Sep 18, 2012
Optical waveguide element, chromatic dispersion compensator, methods for designing chromatic dispersion compensator, optical filter, methods for designing optical filter, optical resonator and methods for designing optical resonator
OGAWA KENSUKE13 citations82
US8824044B2Sep 2, 2014
Planar optical waveguide element, chromatic dispersion compensator, optical filter, optical resonator and methods for designing the element, chromatic dispersion compensator, optical filter and optical resonator
OGAWA KENSUKE0 citations40