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Toshiaki Kawashima
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Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Control apparatus and vacuum pump provided with said control apparatus
Patent number
12,092,123
Issue date
Sep 17, 2024
Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Vacuum pump, magnetic bearing device, and rotor
Patent number
11,536,280
Issue date
Dec 27, 2022
Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Vacuum pump and vacuum-pump damper
Patent number
11,499,571
Issue date
Nov 15, 2022
Edwards Japan Limited
Toshiaki Kawashima
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Grant
Electromagnetic unit, magnetic bearing device, and vacuum pump
Patent number
11,028,853
Issue date
Jun 8, 2021
Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Magnetic bearing device, and vacuum pump having same
Patent number
10,371,159
Issue date
Aug 6, 2019
Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Magnetic bearing device and vacuum pump
Patent number
10,359,046
Issue date
Jul 23, 2019
Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Brushless motor
Patent number
8,248,019
Issue date
Aug 21, 2012
Edwards Japan Limited
Toshiaki Kawashima
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Magnetic bearing device and a turbo molecular pump with the magneti...
Patent number
7,786,636
Issue date
Aug 31, 2010
BOC Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Magnetic bearing device and turbo molecular pump with the magnetic...
Patent number
7,292,425
Issue date
Nov 6, 2007
BOC Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Magnetic bearing device and turbo molecular pump with the magnetic...
Patent number
7,091,641
Issue date
Aug 15, 2006
BOC Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Magnetic bearing device and pump device with the magnetic bearing d...
Patent number
6,949,853
Issue date
Sep 27, 2005
BOC Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Control circuit of brush-less motor, control circuit of sensor-less...
Patent number
6,759,827
Issue date
Jul 6, 2004
BOC Edwards Japan Limited
Toshiaki Kawashima
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
DC brushless motor, magnetic bearing device and turbomolecular pump...
Patent number
6,184,640
Issue date
Feb 6, 2001
Seiko Seiki Kabushiki Kaisha
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Control system for a magnetic levitation body
Patent number
5,093,754
Issue date
Mar 3, 1992
Seiko Seiki Kabushiki Kaisha
Toshiaki Kawashima
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
HARMONIC ELIMINATION CIRCUIT, POSITION DETECTION DEVICE, MAGNETIC B...
Publication number
20230332625
Publication date
Oct 19, 2023
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
G01 - MEASURING TESTING
Information
Patent Application
CONTROL APPARATUS AND VACUUM PUMP PROVIDED WITH SAID CONTROL APPARATUS
Publication number
20220170473
Publication date
Jun 2, 2022
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
VACUUM PUMP AND VACUUM-PUMP DAMPER
Publication number
20210108654
Publication date
Apr 15, 2021
EDWARDS JAPAN LIMITED
Toshiaki KAWASHIMA
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
VACUUM PUMP, MAGNETIC BEARING DEVICE, AND ROTOR
Publication number
20200158118
Publication date
May 21, 2020
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
ELECTROMAGNETIC UNIT, MAGNETIC BEARING DEVICE, AND VACUUM PUMP
Publication number
20190024667
Publication date
Jan 24, 2019
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
PROTECTIVE BEARING, BEARING UNIT, AND VACUUM PUMP
Publication number
20160312826
Publication date
Oct 27, 2016
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
MAGNETIC BEARING DEVICE AND VACUUM PUMP
Publication number
20160290351
Publication date
Oct 6, 2016
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
MAGNETIC BEARING DEVICE, AND VACUUM PUMP HAVING SAME
Publication number
20160252099
Publication date
Sep 1, 2016
EDWARDS JAPAN LIMITED
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Magnetic bearing device and a turbo molecular pump with the magneti...
Publication number
20070188966
Publication date
Aug 16, 2007
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Magnetic bearing device and turbo molecular pump with the magnetic...
Publication number
20050212370
Publication date
Sep 29, 2005
BOC Edwards Japan Limited
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
MAGNETIC BEARING DEVICE AND PUMP DEVICE WITH THE MAGNETIC BEARING D...
Publication number
20050179333
Publication date
Aug 18, 2005
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Motor control system, motor apparatus, vacuum pump, correction curr...
Publication number
20040212333
Publication date
Oct 28, 2004
Yoshinobu Ohtachi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Magnetic bearing device and turbo molecular pump with the magnetic...
Publication number
20040183509
Publication date
Sep 23, 2004
Toshiaki Kawashima
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...