Kei Kato

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical waveguide device, and optical modulation device and optical...
- Patent number 11,586,061
- Issue date Feb 21, 2023
- Sumitomo Osaka Cement Co., Ltd.
- Hideki Ichimei
- G02 - OPTICS
Information Patent Grant
Optical waveguide device, and optical modulation device and optical...
- Patent number 11,402,594
- Issue date Aug 2, 2022
- Sumitomo Osaka Cement Co., Ltd.
- Kei Kato
- G02 - OPTICS
Information Patent Grant
Optical modulator
- Patent number 10,845,539
- Issue date Nov 24, 2020
- Sumitomo Osaka Cement Co., Ltd.
- Kei Kato
- G02 - OPTICS
Information Patent Grant
Optical modulator with wirings of equal length
- Patent number 10,481,464
- Issue date Nov 19, 2019
- Sumitomo Osaka Cement Co., Ltd.
- Toshio Kataoka
- G02 - OPTICS
Information Patent Grant
Optical modulator and optical switch
- Patent number 10,401,658
- Issue date Sep 3, 2019
- Sumitomo Osaka Cement Co., Ltd.
- Toshio Kataoka
- G02 - OPTICS
Information Patent Grant
Optical modulator module
- Patent number 10,247,966
- Issue date Apr 2, 2019
- Sumitomo Osaka Cement Co., Ltd.
- Kei Kato
- G02 - OPTICS
Information Patent Grant
ROM semiconductor integrated circuit device having a plurality of c...
- Patent number 7,869,250
- Issue date Jan 11, 2011
- Renesas Electronics Corporation
- Kei Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Service attribute management system
- Patent number 6,625,605
- Issue date Sep 23, 2003
- Oki Electric Industry Co, Ltd.
- Yosuke Terakura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Service quality management system
- Patent number 6,529,907
- Issue date Mar 4, 2003
- Oki Electric Industry Co. Ltd.
- Yosuke Terakura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Semiconductor memory device, chain memory device, and data processi...
- Patent number 5,583,814
- Issue date Dec 10, 1996
- Hitachi, Ltd.
- Masahiro Iwamura
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DEVICE, OPTICAL MODULATION DEVICE AND OPTICAL TRANSMISSION...
- Publication number 20240310584
- Publication date Sep 19, 2024
- Sumitomo Osaka Cement Co., Ltd.
- Hideki ICHIMEI
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME
- Publication number 20230367143
- Publication date Nov 16, 2023
- Sumitomo Osaka Cement Co., Ltd.
- Kei KATO
- G02 - OPTICS
Information Patent Application
OPTICAL DEVICE AND OPTICAL TRANSMISSION APPARATUS USING SAME
- Publication number 20230314737
- Publication date Oct 5, 2023
- Sumitomo Osaka Cement Co., Ltd.
- Kei KATO
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE DEVICE, AND OPTICAL MODULATION DEVICE AND OPTICAL...
- Publication number 20210302765
- Publication date Sep 30, 2021
- Sumitomo Osaka Cement Co., Ltd.
- Hideki ICHIMEI
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE DEVICE, AND OPTICAL MODULATION DEVICE AND OPTICAL...
- Publication number 20210302679
- Publication date Sep 30, 2021
- Sumitomo Osaka Cement Co., Ltd.
- Kei KATO
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATOR
- Publication number 20190271809
- Publication date Sep 5, 2019
- Sumitomo Osaka Cement Co., Ltd.
- Kei KATO
- G02 - OPTICS
Information Patent Application
OPTICAL ELEMENT MODULE
- Publication number 20180284371
- Publication date Oct 4, 2018
- Sumitomo Osaka Cement Co., Ltd.
- Toshio Kataoka
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATOR MODULE
- Publication number 20180095302
- Publication date Apr 5, 2018
- Sumitomo Osaka Cement Co., Ltd.
- Kei KATO
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATOR
- Publication number 20170299940
- Publication date Oct 19, 2017
- Sumitomo Osaka Cement Co., Ltd.
- Toshio KATAOKA
- G02 - OPTICS
Information Patent Application
OPTICAL MODULATOR AND OPTICAL SWITCH
- Publication number 20170255032
- Publication date Sep 7, 2017
- Sumitomo Osaka Cement Co., Ltd.
- Toshio KATAOKA
- G02 - OPTICS
Information Patent Application
SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
- Publication number 20090003029
- Publication date Jan 1, 2009
- Kei KATO
- G11 - INFORMATION STORAGE
Information Patent Application
Computer readable storage medium and semiconductor integrated circu...
- Publication number 20060031655
- Publication date Feb 9, 2006
- RENESAS TECHNOLOGY CORP.
- Kei Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Computer readable storage medium and semiconductor integrated circu...
- Publication number 20030145177
- Publication date Jul 31, 2003
- Hitachi, Ltd.
- Kei Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Repair supporting method, repair supporting server and repair subje...
- Publication number 20030074597
- Publication date Apr 17, 2003
- TOSHIBA TEC KABUSHIKI KAISHA
- Hirofumi Harada
- G06 - COMPUTING CALCULATING COUNTING

Person

Patents Grantslast 30 patents

Optical waveguide device, and optical modulation device and optical...

Optical waveguide device, and optical modulation device and optical...

Optical modulator

Optical modulator with wirings of equal length

Optical modulator and optical switch

Optical modulator module

ROM semiconductor integrated circuit device having a plurality of c...

Service attribute management system

Service quality management system

Semiconductor memory device, chain memory device, and data processi...

Patents Applicationslast 30 patents

OPTICAL DEVICE, OPTICAL MODULATION DEVICE AND OPTICAL TRANSMISSION...

OPTICAL MODULATOR AND OPTICAL TRANSMISSION DEVICE USING SAME

OPTICAL DEVICE AND OPTICAL TRANSMISSION APPARATUS USING SAME

OPTICAL WAVEGUIDE DEVICE, AND OPTICAL MODULATION DEVICE AND OPTICAL...

OPTICAL WAVEGUIDE DEVICE, AND OPTICAL MODULATION DEVICE AND OPTICAL...

OPTICAL MODULATOR

OPTICAL ELEMENT MODULE

OPTICAL MODULATOR MODULE

OPTICAL MODULATOR

OPTICAL MODULATOR AND OPTICAL SWITCH

SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

Computer readable storage medium and semiconductor integrated circu...

Computer readable storage medium and semiconductor integrated circu...

Repair supporting method, repair supporting server and repair subje...