-
公开(公告)号：US20230055795A1
公开(公告)日：2023-02-23
申请号：US17794394
申请日：2021-01-22
Applicant: POWDERTECH CO., LTD.
Inventor： Takashi KOJIMA , Koji AGA
Abstract: Provided are a ferrite powder that suppresses decreases in saturation magnetization and decreases in filler filling ratio and also suppresses inhibition of resin curing, and a method for producing the same. A ferrite powder composed of spherical ferrite particles, wherein the ferrite powder contains iron (Fe) 54.0-70.0 mass % and manganese (Mn) 3.5-18.5 mass %, has an average volume particle size of 2.0-20.0 μm, and has a carbon content of 0.100 mass % or lower.
-
公开(公告)号：US20190337818A1
公开(公告)日：2019-11-07
申请号：US16466799
申请日：2017-12-12
Applicant: POWDERTECH CO., LTD.
Inventor： Koji AGA , Takashi KOJIMA
Abstract: Provided is an iron oxide powder for a brake friction material which can be suitably used in a brake friction material that is less likely to cause problems regarding brake squealing and that provides superior braking performance. The iron oxide powder for a brake friction material according to the present invention is characterized by having an average particle size of 40 μm or more and a saturation magnetization of 20 emu/g or less. The iron oxide powder preferably has a pore volume of 10-180 mm3/g. The iron oxide powder also preferably has a BET specific surface area of 0.05-1.20 m2/g.
-
公开(公告)号：US20180008921A1
公开(公告)日：2018-01-11
申请号：US15545521
申请日：2016-01-25
Applicant: POWDERTECH CO., LTD.
Inventor： Koji AGA , Takao SUGIURA
CPC classification number: B01D39/06 , B01J20/06 , B01J20/28004 , B01J20/28016 , B01J20/3021 , B01J20/3028 , B01J20/3042 , B01J20/3078 , B01J20/3204 , B01J20/3236 , B01J20/3293 , C01G49/00 , C01G49/0072 , C04B35/62821 , C04B2235/3206 , C04B2235/3262 , C04B2235/3274 , H01F1/11 , H01F1/112
Abstract: An object of the present invention is to provide ferrite particles for a filtering medium excellent in filtration ability having a small apparent density, capable of various properties maintained in the controllable state and filling a specified volume with a small amount, and a filtering medium made from the ferrite particles. In order to achieve the object, ferrite particles provided an outer shell structure containing Ti oxide for a filtering medium, and a filtering medium made from the ferrite particles are employed.
-
4.发明申请FERRITE PARTICLE HAVING OUTER SHELL STRUCTURE, FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER 有权具有外壳结构的铁氰化物颗粒，电子显影开发商的铁氰化物核心材料和电子显影开发公开(公告)号：US20160070193A1
公开(公告)日：2016-03-10
申请号：US14785676
申请日：2015-01-16
Applicant: POWDERTECH CO., LTD.
Inventor： Koji AGA
CPC classification number: G03G9/1075 , C01G49/0036 , C01P2004/03 , C01P2004/51 , C01P2004/61 , C01P2004/62 , C01P2006/12 , C01P2006/14 , C01P2006/42 , G03G9/0819 , G03G9/107 , G03G9/1131
Abstract: It is an object of the present invention to provide a ferrite particle having a low apparent density, and being capable of maintaining various properties thereof in controllable states and filling a fixed volume in a small weight thereof, a ferrite carrier core material and a ferrite carrier for an electrophotographic developer using the ferrite particle, and the like. In order to achieve the object, there are employed the ferrite particle having a porous structure in the interior thereof and an outer shell structure on the outer periphery thereof, the ferrite carrier core material and the ferrite carrier for an electrophotographic developer using the ferrite particle, and an electrophotographic developer using the ferrite carrier.
Abstract translation: 本发明的目的是提供一种表观密度低的铁氧体颗粒，并且能够将其各种性能保持在可控状态并以小重量填充固定体积，铁氧体载体芯材和铁氧体载体 对于使用铁氧体颗粒的电子照相显影剂等。 为了实现该目的，在其内部使用具有多孔结构的铁氧体颗粒和其外周上的外壳结构，铁氧体载体芯材和使用铁氧体颗粒的电子照相显影剂的铁氧体载体， 和使用该铁氧体载体的电子照相显影剂。
-
公开(公告)号：US20240128001A1
公开(公告)日：2024-04-18
申请号：US18275785
申请日：2022-02-09
Applicant: POWDERTECH CO., LTD.
Inventor： Kazutaka ISHII , Koji AGA
IPC: H01F1/34
CPC classification number: H01F1/344
Abstract: A magnetic composite includes a resin base material and a ferrite layer provided on a surface of the resin base material, the resin base material has a thickness of 10 μm or more, and the ferrite layer has a thickness of 2.0 μm or more, contains spinel-type ferrite as a principal component, and has a ratio of 0.00 or more and 0.03 or less, wherein the ratio is of an integrated intensity of a 222 plane to an integrated intensity of a 311 plane in X-ray diffraction analysis.
-
Patent Agency Ranking
6.发明申请公开(公告)号：US20180179082A1
公开(公告)日：2018-06-28
申请号：US15511492
申请日：2015-08-31
Inventor： Koji AGA , Tetsuya IGARASHI , Akio TAKAHASHI
CPC classification number: C01G49/0072 , C01P2002/50 , C01P2004/32 , C01P2004/51 , C01P2004/61 , C01P2006/12 , C01P2006/42 , C08K3/22 , C08K9/04 , C08K2003/2265 , C08L101/00 , C09C1/22 , C09C1/24 , H01F1/00 , H01F1/37
Abstract: The present invention provides a spherical ferrite powder that is excellent in filling ability and moldability if used as a filler, is excellent in handling ability, and is high in resistivity; a resin compound including the ferrite powder; and a molded product made of the resin compound. The spherical ferrite powder including 15 to 30 wt % of ferrite particles having the particle diameter less than 11 μm and have the volume average particle diameter of 10 to 50 μm; the resin compound including the ferrite powder; and the molded product made of the resin compound are employed.
-
公开(公告)号：US20180011414A1
公开(公告)日：2018-01-11
申请号：US15544729
申请日：2016-01-25
Applicant: POWDERTECH CO., LTD.
Inventor： Koji AGA , Takao SUGIURA
Abstract: An object of the present invention is to provide a ferrite particle having a low apparent density, filling a specified volume with a low weight with various properties maintained in a controllable state, a ferrite carrier core material composed of the ferrite particle, and a ferrite carrier using the ferrite core material and an electrophotographic developer. To achieve the object, the ferrite particle having the outer shell structure containing the Ti oxide for the ferrite carrier core material, and the ferrite carrier using the ferrite particle as the ferrite carrier core material and the electrophotographic developer are employed.
-
公开(公告)号：US20170349449A1
公开(公告)日：2017-12-07
申请号：US15541408
申请日：2016-01-21
Applicant: POWDERTECH CO., LTD.
Inventor： Koji AGA , Tetsuya IGARASHI
CPC classification number: C01G49/06 , C01G49/00 , C01G53/00 , C01P2004/20 , C01P2006/42 , C09C1/24 , C09C1/245 , C09D5/36 , C09D7/69 , C09D7/70 , H01F1/36 , H05K9/00 , H05K9/0026
Abstract: An object is to provide a plate shaped ferrite particle for a pigment, having both of electromagnetic wave shielding ability and designability, a resin molded material containing the plate shaped ferrite particle a pigment, and an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material. To achieve the object, the plate shaped ferrite particles for a pigment having a metallic luster, a resin molded material containing the plate shaped ferrite particles for a pigment, an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material are employed.
-
公开(公告)号：US20240182323A1
公开(公告)日：2024-06-06
申请号：US18553430
申请日：2022-03-08
Applicant: POWDERTECH CO., LTD.
Inventor： Tatsuto KANEKO , Koji AGA
CPC classification number: C01G49/0072 , C08K3/22 , C01P2002/32 , C01P2002/60 , C01P2004/03 , C01P2004/32 , C01P2004/51 , C01P2004/61 , C01P2004/62 , C01P2006/12 , C01P2006/40 , C08K2003/2262 , C08K2003/2275 , C08K2003/2296 , C08K2201/003
Abstract: Provided are a ferrite powder that inhibits magnetic loss at frequencies lower than 100 MHZ, and when applied to a composite material or a composite body, is capable of preventing particles from coming off without loss of moldability and filling properties, a ferrite resin composite material, and electromagnetic shielding material, electronic material, or electronic component. This ferrite powder is a Mn—Zn ferrite powder containing at least spherical or polyhedral ferrite particles having a spinel phase as a main phase. The ferrite particles also have, at respective surfaces thereof, a step structure having a convex polygonal contour. Furthermore, the BET specific surface area of the ferrite powder is 0.35-10.00 m2/g, and the contained amount of the zinc oxide (ZnO) phase thereof is 0-0.8 mass %.
-
公开(公告)号：US20220340444A1
公开(公告)日：2022-10-27
申请号：US17641009
申请日：2020-10-07
Applicant: POWDERTECH CO., LTD.
Inventor： Koji AGA , Takashi KOJIMA , Takao SUGIURA , Tadashi TSUDUKI , Satomi KONNO , Sho KUWAHARA
Abstract: Provided are: a ferrite powder whereby, when the ferrite powder is applied in a composite material, dropping out of ferrite particles is suppressed without moldability and filling ability being compromised; a ferrite resin composite material; and an electromagnetic shielding material, an electronic material, or an electronic component. This ferrite powder includes at least spherical or polyhedral ferrite particles in which a step structure is provided on surfaces thereof, the step structure having a polyhedral outline in the surfaces of the ferrite particles.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.016 seconds)
