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Osamu Kawanobe
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Hitachinaka, JP
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Patents Grants
last 30 patents
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Patent Grant
Battery pack, electrical device using battery pack, and electrical...
Patent number
11,824,169
Issue date
Nov 21, 2023
KOKI HOLDINGS CO., LTD.
Tomomasa Nishikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Battery pack, and electric appliance using battery pack
Patent number
11,757,293
Issue date
Sep 12, 2023
KOKI HOLDINGS CO., LTD.
Tomomasa Nishikawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Battery pack, electrical device using battery pack, and electrical...
Patent number
11,205,820
Issue date
Dec 21, 2021
KOKI HOLDINGS CO., LTD.
Hiroyuki Hanawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Centrifugal apparatus with overspeed protection
Patent number
5,726,881
Issue date
Mar 10, 1998
Hitachi Koki Co,. Ltd.
Masahiro Inaniwa
G05 - CONTROLLING REGULATING
Information
Patent Grant
Portable grinder
Patent number
5,558,571
Issue date
Sep 24, 1996
Hitachi Koki Company Limited
Takeshi Toyoshima
B24 - GRINDING POLISHING
Patents Applications
last 30 patents
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Patent Application
BATTERY PACK, ELECTRIC DEVICE USING BATTERY PACK, AND ELECTRIC DEVI...
Publication number
20240055674
Publication date
Feb 15, 2024
Koki Holdings Co., Ltd.
Tomomasa NISHIKAWA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
BATTERY PACK, ELECTRIC APPLIANCE USING BATTERY PACK, AND ELECTRIC A...
Publication number
20190259984
Publication date
Aug 22, 2019
Koki Holdings Co., Ltd.
Tomomasa NISHIKAWA
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Application
BATTERY PACK, ELECTRICAL DEVICE USING BATTERY PACK, AND ELECTRICAL...
Publication number
20190259985
Publication date
Aug 22, 2019
Koki Holdings Co., Ltd.
Hiroyuki HANAWA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
BATTERY PACK, AND ELECTRIC APPLIANCE USING BATTERY PACK
Publication number
20190260209
Publication date
Aug 22, 2019
Koki Holdings Co., Ltd.
Tomomasa NISHIKAWA
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS