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Takao SUGIURA
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Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Ferrite powder and method of producing the same
Patent number
12,119,151
Issue date
Oct 15, 2024
Powdertech Co., Ltd.
Koji Aga
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Mn—Zn ferrite particles, resin molded body, soft magnetic mixed pow...
Patent number
11,651,881
Issue date
May 16, 2023
Powdertech Co., Ltd.
Takashi Kojima
C30 - CRYSTAL GROWTH
Information
Patent Grant
Ferrite particles, resin compositions and electromagnetic wave shie...
Patent number
11,542,174
Issue date
Jan 3, 2023
Powdertech Co., Ltd.
Takashi Kojima
C30 - CRYSTAL GROWTH
Information
Patent Grant
Ferrite powder, resin composition, and molded body
Patent number
11,521,768
Issue date
Dec 6, 2022
Powdertech Co., Ltd.
Kazutaka Ishii
C01 - INORGANIC CHEMISTRY
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
Ferrite particles, resin composition and resin film
Patent number
11,014,826
Issue date
May 25, 2021
Powdertech Co., Ltd.
Takashi Kojima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Ni—Zn—Cu ferrite particle, resin composition, and resin molding
Patent number
10,825,593
Issue date
Nov 3, 2020
Powdertech Co., Ltd.
Takashi Kojima
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Ferrite carrier core material for electrophotographic developer, fe...
Patent number
10,775,711
Issue date
Sep 15, 2020
Powdertech Co., Ltd.
Takao Sugiura
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Ferrite particles having outer shell structure used for filtering m...
Patent number
10,603,614
Issue date
Mar 31, 2020
Powdertech Co., Ltd.
Koji Aga
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Ferrite particle having outer shell structure
Patent number
10,585,369
Issue date
Mar 10, 2020
Powdertech Co., Ltd.
Koji Aga
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ferrite carrier core material for electrophotographic developer, fe...
Patent number
10,564,561
Issue date
Feb 18, 2020
Powdertech Co., Ltd.
Takao Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ferrite particles provided with outer shell structure for catalyst...
Patent number
10,258,970
Issue date
Apr 16, 2019
Powdertech Co., Ltd.
Koji Aga
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Resin-filled ferrite carrier for electrophotographic developer and...
Patent number
9,588,453
Issue date
Mar 7, 2017
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-coated carrier for electrophotographic developer and electrop...
Patent number
9,557,682
Issue date
Jan 31, 2017
Powdertech Co., Ltd.
Takao Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Core material for resin-filled ferrite carrier and ferrite carrier...
Patent number
9,201,328
Issue date
Dec 1, 2015
Powdertech Co., Ltd.
Hiroki Sawamoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-filled ferrite carrier core material for electrophotographic...
Patent number
8,475,988
Issue date
Jul 2, 2013
Powdertech Co., Ltd.
Takao Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-filled carrier for electrophotographic developer, and electro...
Patent number
8,431,311
Issue date
Apr 30, 2013
Powdertech Co., Ltd.
Takao Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-filled ferrite carrier for electrophotographic developer, pro...
Patent number
8,187,781
Issue date
May 29, 2012
Powdertech Co., Ltd.
Hiromichi Kobayashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Resin-filled carrier for electrophotographic developer, and electro...
Patent number
8,168,364
Issue date
May 1, 2012
Powdertech Co., Ltd.
Takao Sugiura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ferrite carrier for electrophotographic developer and electrophotog...
Patent number
8,026,033
Issue date
Sep 27, 2011
Powdertech Co., Ltd.
Hiromichi Kobayashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Carrier for electrophotographic developer and electrophotographic d...
Patent number
6,210,850
Issue date
Apr 3, 2001
Powdertech Co., Ltd.
Masahiro Ogata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
FERRITE POWDER AND METHOD OF PRODUCING THE SAME
Publication number
20230085745
Publication date
Mar 23, 2023
Powdertech Co., Ltd.
Koji AGA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
FERRITE POWDER, FERRITE RESIN COMPOSITE MATERIAL, AND ELECTROMAGNET...
Publication number
20220340444
Publication date
Oct 27, 2022
POWDERTECH CO., LTD.
Koji AGA
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Mn-Zn FERRITE PARTICLES, RESIN MOLDED BODY, SOFT MAGNETIC MIXED POW...
Publication number
20200251263
Publication date
Aug 6, 2020
POWDERTECH CO., LTD.
Takashi KOJIMA
C01 - INORGANIC CHEMISTRY
Information
Patent Application
FERRITE POWDER, RESIN COMPOSITION, AND MOLDED BODY
Publication number
20200143966
Publication date
May 7, 2020
Powdertech Co., Ltd.
Kazutaka ISHII
C01 - INORGANIC CHEMISTRY
Information
Patent Application
NI-ZN-CU FERRITE PARTICLE, RESIN COMPOSITION, AND RESIN MOLDING
Publication number
20190341177
Publication date
Nov 7, 2019
POWDERTECH CO., LTD.
Takashi KOJIMA
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
FERRITE PARTICLES, RESIN COMPOSITIONS AND ELECTROMAGNETIC WAVE SHIE...
Publication number
20190300379
Publication date
Oct 3, 2019
POWDERTECH CO., LTD.
Takashi KOJIMA
C30 - CRYSTAL GROWTH
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
FERRITE PARTICLES, RESIN COMPOSITION AND RESIN FILM
Publication number
20190161362
Publication date
May 30, 2019
POWDERTECH CO., LTD.
Takashi KOJIMA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FE...
Publication number
20190086829
Publication date
Mar 21, 2019
POWDERTECH CO., LTD.
Takao SUGIURA
C01 - INORGANIC CHEMISTRY
Information
Patent Application
FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FE...
Publication number
20190079422
Publication date
Mar 14, 2019
POWDERTECH CO., LTD.
Takao SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE PARTICLE HAVING OUTER SHELL STRUCTURE
Publication number
20180011414
Publication date
Jan 11, 2018
POWDERTECH CO., LTD.
Koji AGA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
FERRITE PARTICLES HAVING OUTER SHELL STRUCTURE USED FOR FILTERING M...
Publication number
20180008921
Publication date
Jan 11, 2018
POWDERTECH CO., LTD.
Koji AGA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
FERRITE PARTICLES PROVIDED WITH OUTER SHELL STRUCTURE FOR CATALYST...
Publication number
20180008966
Publication date
Jan 11, 2018
POWDERTECH CO., LTD.
Koji AGA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
MAGNETIC FILLER
Publication number
20170369672
Publication date
Dec 28, 2017
POWDERTECH CO., LTD.
Koji AGA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
RESIN-FILLED FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND...
Publication number
20150277255
Publication date
Oct 1, 2015
POWDERTECH CO., LTD.
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
CORE MATERIAL FOR RESIN-FILLED FERRITE CARRIER AND FERRITE CARRIER...
Publication number
20140287355
Publication date
Sep 25, 2014
Hiroki SAWAMOTO
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-COATED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROP...
Publication number
20120251191
Publication date
Oct 4, 2012
POWDERTECH CO., LTD.
Takao SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC...
Publication number
20110195357
Publication date
Aug 11, 2011
POWDERTECH CO., LTD.
Takao SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND...
Publication number
20100248125
Publication date
Sep 30, 2010
POWDERTECH CO., LTD.
Takashi HIKICHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROP...
Publication number
20100055601
Publication date
Mar 4, 2010
POWDERTECH CO., LTD.
Takao SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTRO...
Publication number
20090263739
Publication date
Oct 22, 2009
POWDERTECH CO., LTD.
Takao SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE PARTICLES AND PRODUCTION METHOD THEREOF
Publication number
20090246526
Publication date
Oct 1, 2009
POWDERTECH CO., LTD.
Takao SUGIURA
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
RESIN-FILLED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTRO...
Publication number
20090239173
Publication date
Sep 24, 2009
POWDERTECH CO., LTD.
Hiromichi KOBAYASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTRO...
Publication number
20090176170
Publication date
Jul 9, 2009
POWDERTECH CO., LTD.
Takao SUGIURA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, PRO...
Publication number
20080241726
Publication date
Oct 2, 2008
POWDERTECH CO., LTD.
Hiromichi KOBAYASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
RESIN-FILLED FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND...
Publication number
20080199800
Publication date
Aug 21, 2008
POWDERTECH CO., LTD.
Hiromichi KOBAYASHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOG...
Publication number
20080171281
Publication date
Jul 17, 2008
POWDERTECH CO., LTD.
Hiromichi Kobayashi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Ferromagnetic material powder, carrier for electrophotographic deve...
Publication number
20070231722
Publication date
Oct 4, 2007
POWDERTECH CO., LTD.
Takao Sugiura
C01 - INORGANIC CHEMISTRY