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Kenichi Kawamura
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Hitachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Wireless LAN communication system, uplink control method, and wirel...
Patent number
11,985,650
Issue date
May 14, 2024
Nippon Telegraph and Telephone Corporation
Shota Nakayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless LAN system and interference control method
Patent number
11,917,682
Issue date
Feb 27, 2024
Nippon Telegraph and Telephone Corporation
Kenichi Kawamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Random access wireless communication system and random access wirel...
Patent number
11,895,693
Issue date
Feb 6, 2024
Nippon Telegraph and Telephone Corporation
Tomoyuki Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless LAN communication device and wireless LAN communication me...
Patent number
11,882,479
Issue date
Jan 23, 2024
Nippon Telegraph and Telephone Corporation
Kenichi Kawamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless communication control method, wireless communication syste...
Patent number
11,432,235
Issue date
Aug 30, 2022
Nippon Telegraph and Telephone Corporation
Akiyoshi Inoki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless communication system and wireless communication control me...
Patent number
11,153,919
Issue date
Oct 19, 2021
Nippon Telegraph and Telephone Corporation
Akiyoshi Inoki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Stationary induction electrical apparatus
Patent number
10,090,095
Issue date
Oct 2, 2018
Hitachi, Ltd.
Li Lu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electrical insulating paper and stationary induction electrical app...
Patent number
9,953,744
Issue date
Apr 24, 2018
Hitachi, Ltd.
Kohhei Aida
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Stationary induction apparatus
Patent number
9,711,274
Issue date
Jul 18, 2017
Hitachi, Ltd.
Taku Oyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Stationary induction apparatus
Patent number
6,639,497
Issue date
Oct 28, 2003
Hitachi, Ltd.
Yoshio Hamadate
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Stationary induction apparatus
Patent number
6,469,607
Issue date
Oct 22, 2002
Hitachi, Ltd.
Yoshio Hamadate
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
WIRELESS COMMUNICATION SYSTEM LINKING METHOD AND WIRELESS COMMUNICA...
Publication number
20240040458
Publication date
Feb 1, 2024
Nippon Telegraph and Telephone Corporation
Shota Nakayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RELAY METHOD AND RELAY APPARATUS
Publication number
20240032086
Publication date
Jan 25, 2024
Nippon Telegraph and Telephone Corporation
Shota NAKAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LEARNING METHOD, WIRELESS QUALITY ESTIMATION METHOD, LEARNING DEVIC...
Publication number
20230388812
Publication date
Nov 30, 2023
Nippon Telegraph and Telephone Corporation
Keisuke WAKAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATION SYSTEM LINKING METHOD AND WIRELESS COMMUNICA...
Publication number
20230328595
Publication date
Oct 12, 2023
Nippon Telegraph and Telephone Corporation
Shota Nakayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CONTROL SYSTEM, CONTROL APPARATUS, CONTROL METHOD AND CONTROL PROGRAM
Publication number
20230308893
Publication date
Sep 28, 2023
Nippon Telegraph and Telephone Corporation
Daisuke MURAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, CONNECTION DESTINATION CONTROL METHOD, CONTRO...
Publication number
20230300707
Publication date
Sep 21, 2023
Nippon Telegraph and Telephone Corporation
Shota Nakayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, CONNECTION DESTINATION CONTROL METHOD, CONTRO...
Publication number
20230276335
Publication date
Aug 31, 2023
Nippon Telegraph and Telephone Corporation
Shota Nakayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, CONNECTION DESIGNATION CONTROL METHOD, CONTRO...
Publication number
20230269637
Publication date
Aug 24, 2023
Nippon Telegraph and Telephone Corporation
Shota Nakayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LOCAL WIRELESS COMMUNICATION SYSTEM, IN-AREA RECEPTION QUALITY CONT...
Publication number
20230254714
Publication date
Aug 10, 2023
Nippon Telegraph and Telephone Corporation
Daisuke MURAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RADIO COMMUNICATION SYSTEM, CONTROL METHOD AND CONTROL DEVICE FOR R...
Publication number
20230247621
Publication date
Aug 3, 2023
Nippon Telegraph and Telephone Corporation
Daisuke MURAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RADIO COMMUNICATION SYSTEM, CONTROL METHOD AND CONTROL DEVICE FOR R...
Publication number
20230232288
Publication date
Jul 20, 2023
Nippon Telegraph and Telephone Corporation
Daisuke MURAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM, QUALI...
Publication number
20230128921
Publication date
Apr 27, 2023
Nippon Telegraph and Telephone Corporation
Keisuke WAKAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LOCAL WIRELESS COMMUNICATION SYSTEM, RADIO FIELD INTENSITY CONTROL...
Publication number
20230097069
Publication date
Mar 30, 2023
Nippon Telegraph and Telephone Corporation
Daisuke MURAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS LAN SYSTEM, INTERFERENCE CONTROL SIGNAL MANAGEMENT DEVICE,...
Publication number
20220408453
Publication date
Dec 22, 2022
Nippon Telegraph and Telephone Corporation
Shota NAKAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS LAN SYSTEM, ACCESS POINT DEVICE, AND WIRELESS COMMUNICATIO...
Publication number
20220386374
Publication date
Dec 1, 2022
Nippon Telegraph and Telephone Corporation
Kenichi KAWAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATOIN SYSTEM, AND WIRELESS COMMUNICATION METHOD
Publication number
20220132370
Publication date
Apr 28, 2022
Nippon Telegraph and Telephone Corporation
Keisuke Wakao
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RANDOM ACCESS WIRELESS COMMUNICATION SYSTEM AND RANDOM ACCESS WIREL...
Publication number
20220070886
Publication date
Mar 3, 2022
Nippon Telegraph and Telephone Corporation
Tomoyuki YAMADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS LAN COMMUNICATION DEVICE AND WIRELESS LAN COMMUNICATION ME...
Publication number
20220014965
Publication date
Jan 13, 2022
Nippon Telegraph and Telephone Corporation
Kenichi Kawamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS LAN SYSTEM AND INTERFERENCE CONTROL METHOD
Publication number
20220007419
Publication date
Jan 6, 2022
Nippon Telegraph and Telephone Corporation
Kenichi KAWAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS LAN COMMUNICATION SYSTEM, UPLINK CONTROL METHOD, AND WIREL...
Publication number
20210352685
Publication date
Nov 11, 2021
Nippon Telegraph and Telephone Corporation
Shota NAKAYAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATION CONTROL METHOD, WIRELESS COMMUNICATION SYSTE...
Publication number
20200413327
Publication date
Dec 31, 2020
Nippon Telegraph and Telephone Corporation
Akiyoshi INOKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION CONTROL ME...
Publication number
20200053774
Publication date
Feb 13, 2020
Nippon Telegraph and Telephone Corporation
Akiyoshi INOKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
STATIONARY INDUCTION ELECTRICAL APPARATUS
Publication number
20170301454
Publication date
Oct 19, 2017
Hitachi, Ltd
Li LU
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Stationary Induction Apparatus
Publication number
20150371767
Publication date
Dec 24, 2015
Hitachi, Ltd
Taku OYAMA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Electrical Insulating Paper and Stationary Induction Electrical App...
Publication number
20150371730
Publication date
Dec 24, 2015
Hitachi, Ltd
Kohhei AIDA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Transformer
Publication number
20150287524
Publication date
Oct 8, 2015
Hitachi, Ltd
Yasunori ONO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Stationary induction apparatus
Publication number
20020196117
Publication date
Dec 26, 2002
Hitachi, Ltd.
Yoshio Hamadate
H01 - BASIC ELECTRIC ELEMENTS