公开(公告)号：US09502066B2

公开(公告)日：2016-11-22

申请号：US14499679

申请日：2014-09-29

Applicant: FUJIFILM CORPORATION

Inventor： Yoichi Hosoya

IPC: H01F1/10 ,  G11B5/714 ,  G11B5/712 ,  G11B5/706 ,  C01G49/00

CPC classification number: G11B5/714 ,  B32B5/16 ,  B32B2307/208 ,  B32B2429/02 ,  C01G49/0036 ,  C01G49/02 ,  C01P2004/10 ,  C01P2004/20 ,  C01P2004/30 ,  C01P2004/54 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  G11B5/70678 ,  Y02P20/544 ,  Y10T428/2982

Abstract: An aspect of the present invention relates to ferromagnetic hexagonal ferrite powder, the average particle size of which is equal to or less than 20 nm, and which comprises, on a particle number basis, equal to or more than 50% of ellipsoid hexagonal ferrite powders satisfying relation (1): 1.2

Abstract translation: 本发明的一个方面涉及其平均粒度等于或小于20nm的铁磁性六方铁氧体粉末，并且其以粒子数为基准包括等于或大于50％的椭圆六方铁氧体粉末 满足关系（1）：1.2 <长轴长/短轴长<2.0。 。 。 （1）。

公开(公告)号：US11721461B2

公开(公告)日：2023-08-08

申请号：US16904932

申请日：2020-06-18

Applicant: FUJIFILM Corporation

Inventor： Yoichi Hosoya ,  Masashi Shirata ,  Tatsuo Mikami

IPC: H01F1/34 ,  H01F1/37 ,  C01G49/00 ,  H05K9/00 ,  C30B29/22

CPC classification number: H01F1/348 ,  C01G49/0045 ,  C30B29/22 ,  H05K9/0075 ,  C01P2002/76 ,  C01P2006/42

Abstract: To provide magnetoplumbite-type hexagonal ferrite particles represented by Formula (1) and having a single crystal phase, and the application. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5≤x≤8.0.

AFe(12−x)AlxO19  Formula (1)

公开(公告)号：US10373638B2

公开(公告)日：2019-08-06

申请号：US15475615

申请日：2017-03-31

Applicant: FUJIFILM Corporation

Inventor： Yoichi Hosoya ,  Masashi Shirata

IPC: G11B5/70 ,  G11B5/706 ,  G11B5/714 ,  G11B5/78 ,  H01F1/11 ,  B82Y25/00 ,  H01F1/00

Abstract: Hexagonal ferrite powder has an average particle size falling within a range of 10 nm to 50 nm, a switching field distribution SFD23° C. measured at a temperature of 23° C. that is less than or equal to 0.80, and a ratio of a switching field distribution SFD−190° C. that is measured at a temperature of −190° C. to the SFD23° C. (SFD−190° C./SFD23° C.) that is greater than 0.80.

公开(公告)号：US09839882B2

公开(公告)日：2017-12-12

申请号：US14860808

申请日：2015-09-22

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro Aburaya ,  Makoto Sawada ,  Satoshi Yoneyama ,  Yoichi Hosoya

IPC: B01D53/22 ,  B01D69/12 ,  B01D63/10 ,  B01D71/38 ,  B01D69/14 ,  B01D71/80 ,  B01D67/00 ,  B01D69/10 ,  B01J19/24 ,  C09D153/00 ,  B01D71/32 ,  B01D71/40

CPC classification number: B01D69/12 ,  B01D53/22 ,  B01D53/228 ,  B01D63/10 ,  B01D67/0002 ,  B01D69/10 ,  B01D69/142 ,  B01D71/32 ,  B01D71/38 ,  B01D71/40 ,  B01D71/80 ,  B01D2256/16 ,  B01D2256/20 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2323/30 ,  B01J19/2475 ,  B01J2219/24 ,  C09D153/005 ,  Y02C10/10

Abstract: A solution is to produce an acid gas separation composite membrane provided with an acid gas separation facilitated membrane on a porous support, including; arranging of a coating liquid for acid gas separation formed through dispersing or dissolving into water a polyvinyl acetal compound formed through crosslinking, by an acetal bond, block copolymers formed through bonding of a polymer block formed of polyvinyl alcohol and a polymer block formed of polyacrylate through a linking group, an acid gas carrier and at least one kind of anion other than hydroxide ion, carboxyl ion, carbonate ion and bicarbonate ion, and coating of the coating liquid for acid gas separation onto a hydrophobic surface of the porous support having hydrophobicity at least on one surface to form the acid gas separation facilitated transport membrane thereon.

公开(公告)号：US09741382B2

公开(公告)日：2017-08-22

申请号：US14673282

申请日：2015-03-30

Applicant: FUJIFILM Corporation

Inventor： Yoichi Hosoya

IPC: G11B5/708 ,  G11B5/706 ,  C01G49/00 ,  H01F1/11

CPC classification number: G11B5/70678 ,  C01G49/0036 ,  C01P2004/54 ,  C01P2004/64 ,  C01P2006/42 ,  H01F1/11 ,  Y10T428/2982

Abstract: An aspect of the present invention relates to hexagonal ferrite powder, which comprises equal to or more than 70% on a particle number basis of isotropic hexagonal ferrite particles satisfying equation (1): major axis length/minor axis length

公开(公告)号：US11043528B2

公开(公告)日：2021-06-22

申请号：US16242152

申请日：2019-01-08

Applicant: FUJIFILM Corporation

Inventor： Hirotaka Takishita ,  Yoichi Hosoya ,  Tokuju Oikawa ,  Hidenori Takahashi

IPC: H01L27/146 ,  G02B1/04 ,  C09K3/10 ,  G02B5/24 ,  H04N5/225 ,  G02B5/22

Abstract: A composition includes a metal particle and a resin and has a wavelength band A having a wavelength band width of 1 μm or more in a wavelength range of 1 to 14 μm and a wavelength band B having a lower absorbance than the wavelength band A and having a wavelength band width of 1 μm or more, and a ratio Amin/Bmax between a minimum value Amin of an absorbance of the wavelength band A and a maximum value Bmax of an absorbance of the wavelength band B is 3 or more.

公开(公告)号：US10734144B2

公开(公告)日：2020-08-04

申请号：US15627636

申请日：2017-06-20

Applicant: FUJIFILM Corporation

Inventor： Masashi Shirata ,  Yoichi Hosoya

IPC: H01F1/00 ,  H01F1/113 ,  G11B5/706 ,  G11B5/714 ,  H01F1/11 ,  C01G49/00 ,  C01B13/36

Abstract: A production method for metal oxide particles includes: obtaining precursor particles of a metal oxide by performing a synthesis reaction of the precursor particles in the presence of an organic compound; and converting the obtained precursor particles into metal oxide particles by heating an aqueous solution containing the precursor particles to 300° C. or higher and pressurizing the aqueous solution at a pressure of 20 MPa or higher.

公开(公告)号：US10043544B2

公开(公告)日：2018-08-07

申请号：US15258292

申请日：2016-09-07

Applicant: FUJIFILM Corporation

Inventor： Yoichi Hosoya ,  Toshihide Aoshima

IPC: G11B5/706 ,  G11B5/70 ,  G11B5/714

Abstract: The magnetic recording medium has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the ferromagnetic powder is hexagonal ferrite powder containing, based on number of particles, greater than or equal to 80% isotropic particles that satisfy the relation 1: major axis length/minor axis length

公开(公告)号：US09724647B2

公开(公告)日：2017-08-08

申请号：US14644212

申请日：2015-03-11

Applicant: FUJIFILM CORPORATION

Inventor： Yoichi Hosoya ,  Kenichi Ishizuka

IPC: B01D53/22 ,  B01D63/10 ,  B01D63/12 ,  B01D69/02

CPC classification number: B01D63/106 ,  B01D53/226 ,  B01D53/228 ,  B01D63/10 ,  B01D63/12 ,  B01D69/02 ,  B01D2053/223 ,  B01D2257/504 ,  B01D2313/08 ,  B01D2319/02 ,  B01D2325/30 ,  Y02C10/10 ,  Y10T428/214

Abstract: An acidic gas separation module 10, which improves gas separation efficiency and reduces pressure loss, includes: a permeating gas collecting tube 12 having tube walls in which through holes 12A are formed; a layered body 14 that has at least an acidic gas separation layer 32 and that is wound on the permeating gas collecting tube 12; and telescope prevention plates 18 (a gas supply side 18A and a gas discharge side 18B) provided at both end faces in an axial direction of the wound layered body 14, wherein the ratio (D2/D1) of the open area ratio D2 of the telescope prevention plate on the gas discharge side 18B relative to the open area ratio D1 of the telescope prevention plate on the gas supply side 18A is from 0.5 to 0.9. An acidic gas separation device includes the acidic gas separation module 10.

公开(公告)号：US09454983B2

公开(公告)日：2016-09-27

申请号：US14584557

申请日：2014-12-29

Applicant: FUJIFILM Corporation

Inventor： Yoichi Hosoya

IPC: G11B5/714 ,  H01F1/10 ,  G11B5/706 ,  C01G49/00 ,  H01F1/11

CPC classification number: G11B5/70678 ,  C01G49/0036 ,  C01P2004/10 ,  C01P2004/20 ,  C01P2004/32 ,  C01P2004/54 ,  C01P2004/64 ,  C01P2006/42 ,  H01F1/11 ,  Y10T428/2982

Abstract: An aspect of the present invention relates to a method of manufacturing hexagonal ferrite powder, which comprises preparing a hexagonal ferrite precursor-containing water-based solution by stirring and mixing a reaction solution which comprises an iron salt, an alkaline earth metal salt, and a base in a reaction tank, and removing the hexagonal ferrite precursor-containing water-based solution that has been prepared from the reaction tank and continuously feeding the hexagonal ferrite precursor-containing water-based solution into a reaction flow passage while conducting heating and pressurizing to converting the hexagonal ferrite precursor to hexagonal ferrite, wherein the preparation of the hexagonal ferrite precursor-containing water-based solution comprises a continual feed period during which feeding of the iron salt, the alkaline earth metal salt, and the base into a reaction tank which comprises a prereaction solution in which an iron salt and a base are not both present is continuously or intermittently continued, during the continual feed period, at least a base is fed over a feed passage separate from feeding of the iron salt and the alkaline earth metal salt, and an amount of at least one from among the iron salt, the alkaline earth metal salt, and the base that is fed per unit time during the continual feed period is controlled and/or acid is added to the reaction solution in the reaction tank so that a pH of the reaction solution within the reaction tank during the continual feed period falls within a range relative to a pHbefore, a pH of the prereaction solution, of pHbefore−2≦pH≦pHbefore+2.