Hitoshi Kawashima

Follow

Person

Tsukuba, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical amplifier and optical switch device
- Patent number 11,022,811
- Issue date Jun 1, 2021
- Fujitsu Limited
- Suguru Akiyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Driving device and driving method for phase controller, and optical...
- Patent number 10,901,242
- Issue date Jan 26, 2021
- National Institute of Advanced Industrial Science and Technology
- Ken Tanizawa
- G02 - OPTICS
Information Patent Grant
Light beam deflecting element, wavelength-selective cross-connect d...
- Patent number 10,613,412
- Issue date Apr 7, 2020
- National Institute of Advanced Industrial Science
- Hisato Uetsuka
- G02 - OPTICS
Information Patent Grant
Wavelength domain optical switch
- Patent number 8,503,836
- Issue date Aug 6, 2013
- National Institute of Advanced Industrial Science and Technology
- Hiroshi Ishikawa
- G02 - OPTICS
Information Patent Grant
Optical waveguide-type wavelength domain switch
- Patent number 8,229,258
- Issue date Jul 24, 2012
- National Institute of Advanced Industrial Science and Technology
- Hiroshi Ishikawa
- G02 - OPTICS
Information Patent Grant
Dielectric dispersion determining method in terahertz region using...
- Patent number 5,946,085
- Issue date Aug 31, 1999
- Agency of Industrial Science and Technology
- Hitoshi Kawashima
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Driving Device and Driving Method for Phase Controller, and Optical...
- Publication number 20200271962
- Publication date Aug 27, 2020
- NATIONAL INSTITUTE ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Ken TANIZAWA
- G02 - OPTICS
Information Patent Application
OPTICAL AMPLIFIER AND OPTICAL SWITCH DEVICE
- Publication number 20190049743
- Publication date Feb 14, 2019
- Fujitsu Limited
- Suguru AKIYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LIGHT BEAM DEFLECTING ELEMENT, WAVELENGTH-SELECTIVE CROSS-CONNECT D...
- Publication number 20180143508
- Publication date May 24, 2018
- NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Hisato Uetsuka
- G02 - OPTICS
Information Patent Application
WAVELENGTH CROSS CONNECT DEVICE
- Publication number 20130272650
- Publication date Oct 17, 2013
- NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Hiroshi Ishikawa
- G02 - OPTICS
Information Patent Application
WAVELENGTH DOMAIN OPTICAL SWITCH
- Publication number 20110182545
- Publication date Jul 28, 2011
- NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Hiroshi Ishikawa
- G02 - OPTICS
Information Patent Application
Optical waveguide-type wavelength domain switch
- Publication number 20100067900
- Publication date Mar 18, 2010
- NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
- Hiroshi Ishikawa
- G02 - OPTICS