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Kashiwa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ferrite carrier core material for electrophotographic developer, fe...
Patent number
11,422,480
Issue date
Aug 23, 2022
Powdertech Co., Ltd.
Makoto Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ferrite carrier core material for electrophotographic developer, ca...
Patent number
11,150,569
Issue date
Oct 19, 2021
Powdertech Co., Ltd.
Yuzuru Yamasaki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic core material for electrophotographic developer, carrier f...
Patent number
11,099,495
Issue date
Aug 24, 2021
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier, electrophotographic developer and production method of car...
Patent number
11,029,618
Issue date
Jun 8, 2021
Powdertech Co., Ltd.
Aya Sakuta
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic core material for electrophotographic developer, carrier f...
Patent number
10,996,576
Issue date
May 4, 2021
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Magnetic core material for electrophotographic developer, carrier f...
Patent number
10,996,579
Issue date
May 4, 2021
Powdertech Co., Ltd.
Hiroki Sawamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Magnetic core material for electrophotographic developer, carrier f...
Patent number
10,969,706
Issue date
Apr 6, 2021
Powdertech Co., Ltd.
Hiroki Sawamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Magnetic core material for electrophotographic developer, carrier f...
Patent number
10,754,271
Issue date
Aug 25, 2020
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier, electrophotographic developer, and method of manufacturing...
Patent number
10,248,039
Issue date
Apr 2, 2019
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier and electrophotographic developer using the carrier
Patent number
10,036,982
Issue date
Jul 31, 2018
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-coated carrier for electrophotographic developer and electrop...
Patent number
9,329,515
Issue date
May 3, 2016
Powdertech Co., Ltd.
Makoto Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-coated carrier for electrophotographic developer, and electro...
Patent number
8,541,155
Issue date
Sep 24, 2013
Powdertech Co., Ltd.
Tetsuya Uemura
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Resin-coated ferrite carrier for electrophotographic developer, its...
Patent number
7,521,163
Issue date
Apr 21, 2009
Powdertech Co., Ltd.
Tetsuya Uemura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Two-component developer having a resin coated carrier for electroph...
Patent number
7,470,497
Issue date
Dec 30, 2008
Panasonic Corporation
Yasuhito Yuasa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier for electrophotographic development and electrophotographic...
Patent number
6,071,663
Issue date
Jun 6, 2000
Powdertech Co., Ltd.
Shinichi Matsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
FERRITE PARTICLE, CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEV...
Publication number
20230296999
Publication date
Sep 21, 2023
POWDERTECH CO.,LTD.
Makoto ISHIKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE PARTICLES, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER CORE MATER...
Publication number
20230144641
Publication date
May 11, 2023
POWDERTECH CO.,LTD.
Makoto ISHIKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE PARTICLES, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER CORE MATER...
Publication number
20220155702
Publication date
May 19, 2022
POWDERTECH CO.,LTD.
Makoto ISHIKAWA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
FERRITE PARTICLES, ELECTROPHOTOGRAPHIC DEVELOPER CARRIER CORE MATER...
Publication number
20220155701
Publication date
May 19, 2022
Powdertech Co., Ltd.
Makoto ISHIKAWA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
CARRIER, XEROGRAPHIC DEVELOPER, AND CARRIER PRODUCTION METHOD
Publication number
20220019151
Publication date
Jan 20, 2022
POWDERTECH CO.,LTD.
Aya SAKUTA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER F...
Publication number
20210080847
Publication date
Mar 18, 2021
Powdertech Co., Ltd.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FE...
Publication number
20200057399
Publication date
Feb 20, 2020
Powdertech Co., Ltd.
Makoto ISHIKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER F...
Publication number
20200033746
Publication date
Jan 30, 2020
Powdertech Co., Ltd.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER F...
Publication number
20200026211
Publication date
Jan 23, 2020
Powdertech Co., Ltd.
Hiroki SAWAMOTO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER F...
Publication number
20190346783
Publication date
Nov 14, 2019
Powdertech Co., Ltd.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER F...
Publication number
20190339628
Publication date
Nov 7, 2019
Powdertech Co., Ltd.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
MAGNETIC CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CARRIER F...
Publication number
20190204761
Publication date
Jul 4, 2019
Powdertech Co., Ltd.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, CA...
Publication number
20190163081
Publication date
May 30, 2019
POWDERTECH CO., LTD.
Yuzuru YAMASAKI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER, ELECTROPHOTOGRAPHIC DEVELOPER AND PRODUCTION METHOD OF CAR...
Publication number
20190049870
Publication date
Feb 14, 2019
POWDERTECH CO., LTD.
Aya SAKUTA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER, ELECTROPHOTOGRAPHIC DEVELOPER, AND METHOD OF MANUFACTURING...
Publication number
20180074426
Publication date
Mar 15, 2018
POWDERTECH CO., LTD.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE CARRIER
Publication number
20160216643
Publication date
Jul 28, 2016
POWDERTECH CO., LTD.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-COATED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROP...
Publication number
20140295342
Publication date
Oct 2, 2014
POWDERTECH CO., LTD.
Makoto ISHIKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-COATED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTRO...
Publication number
20120251942
Publication date
Oct 4, 2012
POWDERTECH CO., LTD.
Tetsuya UEMURA
B82 - NANO-TECHNOLOGY
Information
Patent Application
RESIN-COATED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTRO...
Publication number
20110244388
Publication date
Oct 6, 2011
POWDERTECH CO., LTD.
Tetsuya UEMURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FE...
Publication number
20110244389
Publication date
Oct 6, 2011
POWDERTECH CO., LTD.
Takashi KOJIMA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER COATED WITH RESIN FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELE...
Publication number
20100248113
Publication date
Sep 30, 2010
POWDERTECH CO., LTD.
Tetsuya UEMURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER FOR TWO-COMPONENT ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTRO...
Publication number
20100233612
Publication date
Sep 16, 2010
POWDERTECH CO., LTD.
Tetsuya UEMURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CARRIER FOR AN ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPH...
Publication number
20090297974
Publication date
Dec 3, 2009
POWDERTECH CO., LTD.
Takashi KOJIMA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
ELECTROPHOTOGRAPHIC DEVELOPER CARRIER AND ELECTROPHOTOGRAPHIC DEVEL...
Publication number
20090170022
Publication date
Jul 2, 2009
POWDERTECH CO., LTD.
Takashi KOJIMA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Resin-coated ferrite carrier for electrophotographic developer, its...
Publication number
20060121385
Publication date
Jun 8, 2006
POWDERTECH CO., LTD.
Tetsuya Uemura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Carrier for electrophotography
Publication number
20060051695
Publication date
Mar 9, 2006
Yasuhito Yuasa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY