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1. 发明专利

JP2003102473A MAGNETIC CARRIER TO BE BONDED TO NUCLEIC ACID AND METHOD FOR PRODUCING THE SAME 审中-公开
公开(公告)号：JP2003102473A
公开(公告)日：2003-04-08
申请号：JP2001300418
申请日：2001-09-28
申请人： HITACHI MAXELL , TOYO BOSEKI
发明人： KISHIMOTO MIKIO , NISHIYA YOSHIAKI
IPC分类号： C12N15/09
摘要： PROBLEM TO BE SOLVED: To provide a magnetic carrier to be bonded to a nucleic acid, having excellent bondability of a nucleic acid, capable of being captured by a magnetic field well, having excellent dispersibility and releasability of the bonded nucleic acid in a magnetic field-free state, as a result, having good performance for isolating the nucleic acid, and comprising a silica-covered magnetic particle. SOLUTION: This magnetic carrier to be bonded to the nucleic acid having 2.39-11.94 kA/m (30-150 Oe) coercive force, 30-60 A.m /kg (30-60 emu/g) saturation magnetization and a spherical shape having 1-10 μm average particle size is produced by subjecting a ferromagnetic magnetite particle having 0.1-0.5 μm average particle size to a covering treatment with silica, and heat-treating the covered particle in a nonoxidative gas atmosphere.

2. 发明专利

JP2004256445A PROTEIN IMMOBILIZED MAGNETIC CARRIER, METHOD FOR PRODUCING THE SAME AND USE THEREOF 审中-公开
公开(公告)号：JP2004256445A
公开(公告)日：2004-09-16
申请号：JP2003049215
申请日：2003-02-26
申请人： TOYO BOSEKI , HITACHI MAXELL
发明人： KUSUMOTO MASAHIRO , NISHIYA YOSHIAKI , KISHIMOTO MIKIO , TSUBOI SATOKO
IPC分类号： G01N33/543 , B01D15/08 , B01J20/24 , C07K1/22 , C07K17/14 , C12N11/14 , C12Q1/00 , G01N33/553 , G01N33/566
摘要： PROBLEM TO BE SOLVED: To obtain a simple and general-purpose protein immobilized magnetic carrier at an extremely low cost in comparison with a conventional method and to provide a method for producing the same. SOLUTION: In the protein immobilized magnetic carrier equipped with ferromagnetic particles and a protein layer coating the ferromagnetic particles, the protein layer is formed by combining proteins with the surfaces of the ferromagnetic particles and mutually adjoining proteins by non-covalent bonds. COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2003104996A MAGNETIC CARRIER FOR BONDING NUCLEIC ACID AND METHOD FOR MANUFACTURING THE SAME 审中-公开
公开(公告)号：JP2003104996A
公开(公告)日：2003-04-09
申请号：JP2001300419
申请日：2001-09-28
申请人： HITACHI MAXELL , TOYO BOSEKI
发明人： KISHIMOTO MIKIO , NISHIYA YOSHIAKI
IPC分类号： C12N15/09 , C01G49/08 , C07H1/08 , C07H21/04
摘要： PROBLEM TO BE SOLVED: To provide a magnetic carrier for bonding a nucleic acid having such a structure that is obtained by coating ferromagnetic iron oxide particles with silica, in which the bonding property of the nucleic acid to the silica coated surfaces are improved, and the isolation and purification efficiencies of the nucleic acid can be improved. SOLUTION: The magnetic carrier for bonding a nucleic acid in which ferromagnetic iron oxide particles are coated with silica, and amino groups or carboxylic groups are imparted to the silica coated surface as functional groups. Especially, the functional groups are imparted by using a silane coupling agent for amine modification or carboxylic acid modification.

4. 发明专利

JP2003230380A METHOD FOR PURIFYING NUCLEIC ACID, SOLUTION FOR EXTRACTING NUCLEIC ACID AND REAGENT KIT FOR PURIFYING NUCLEIC ACID USED FOR THE SAME METHOD 审中-公开
公开(公告)号：JP2003230380A
公开(公告)日：2003-08-19
申请号：JP2002029760
申请日：2002-02-06
申请人： TOYO BOSEKI , HITACHI MAXELL
发明人： NISHIYA YOSHIAKI , KISHIMOTO MIKIO
IPC分类号： C12N15/09 , C07H21/04
摘要： PROBLEM TO BE SOLVED: To provide a method for purifying a nucleic acid from a sample containing the nucleic acid with high efficiency at a low cost according to a simple method. SOLUTION: The method for purifying the nucleic acid comprises the following steps. A step of holding the sample containing the nucleic acid on a solid- phase support for binding the nucleic acid containing silica in a solution for extracting the nucleic acid containing a chaotropic substance, a solid-liquid separating step of separating the solid-phase support holding the nucleic acid from the solution for extracting the nucleic acid, and a step of liberating the nucleic acid from the solid-phase support. In the method, the solution for extracting the nucleic acid further contains an alkali metal ion and/or an alkaline earth metal ion at ≥0.2 M concentration. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2003169661A APPARATUS FOR ANALYZING NUCLEIC ACID AND METHOD FOR ANALYZING NUCLEIC ACID BY USING THE SAME 审中-公开
公开(公告)号：JP2003169661A
公开(公告)日：2003-06-17
申请号：JP2001371937
申请日：2001-12-05
申请人： TOYO BOSEKI , HITACHI MAXELL
发明人： NISHIYA YOSHIAKI , IKEDA KATSUNORI , KISHIMOTO MIKIO , UMEBAYASHI NOBUHIRO
IPC分类号： G01N33/48 , C12M1/00 , C12Q1/68 , G01N27/447 , G01N33/53 , G01N33/533 , G01N33/566 , G01N37/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive, simple and miniaturized apparatus for extracting and refining a nucleic acid from a sample containing the nucleic acid and analyzing the nucleic acid and to provide a method using the apparatus. SOLUTION: This invention provides the apparatus for analyzing the nucleic acid in the sample, having the following means (a) to (d) and the analytic method using the apparatus. (a) A means for bringing the sample into contact with magnetism-responding particles having a ferromagnetic metal oxide and silica and carrying out treatment for absorbing the nucleic acid in the sample into the magnetism-responding particles. (b) A means for carrying out treatment for separating magnetism-responding particles, in which the nucleic acid is absorbed, from the sample by applying magnetic field thereto. (c) A means for carrying out treatment for separating the nucleic acid from the magnetism- responding particles by applying electric field thereto. (d) A means for carrying out treatment for amplifying the nucleic acid separated from the magnetism- responding particles. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2010061732A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2010061732A
公开(公告)日：2010-03-18
申请号：JP2008226167
申请日：2008-09-03
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KISHIMOTO MIKIO , YOSHIDA KENICHIRO , YASUI TOSHIAKI
IPC分类号： G11B5/706 , G11B5/714 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To solve the problem that fine hexagonal ferrite magnetic powders are likely to form a magnetic aggregate due to lamination peculiar to flat magnetic powders. SOLUTION: Noise can be reduced while maintaining an output level of a magnetic recording medium and high SNR can be obtained by using the hexagonal ferrite magnetic powder in which an average grain size is 10-30 nm in the range of 70-90 wt.% of total content of the magnetic powder and the rest is a granular or an elliptical iron nitride magnetic powder having an average grain size of 10-20 nm. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了解决由于扁平磁粉特有的层压，精细的六方晶系铁氧体磁粉很可能形成磁性骨料的问题。解决方案：在保持磁记录介质的输出电平的同时可以降低噪声，并且通过使用其中平均晶粒尺寸为10-30nm的六方晶系铁氧体磁粉在70-90的范围内可以获得高SNR 磁性粉末的总含量的重量％，其余为平均粒径为10〜20nm的粒状或椭圆形的氮化铁磁粉。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2009104685A Magnetic recording medium and manufacturing method thereof 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：JP2009104685A
公开(公告)日：2009-05-14
申请号：JP2007273379
申请日：2007-10-22
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KISHIMOTO MIKIO
IPC分类号： G11B5/706 , G11B5/70 , G11B5/712 , G11B5/738 , G11B5/842 , G11B5/852 , H01F1/047
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium for attaining a high SNR even in a system using highly sensitive head such as a GMR head. SOLUTION: In the magnetic recording medium having a non-magnetic supporting body and a magnetic layer on the non-magnetic supporting body, the magnetic layer contains granular or elliptical iron nitride based magnetic powder including a Fe 16 N 2 phase and a binder and has an in-plane parallel squareness R1 of 0.55 to 0.70 and a ratio (R2/R1) of an in-plane vertical squareness R2 to the in-plane parallel squareness R1 of 0.50 to 0.90 when the in-plane parallel squareness ratio in an in-plane of the magnetic layer measured in a direction parallel to the running direction of the magnetic recording medium when a signal is recorded and reproduced is defined as R1 and the in-plane vertical squareness in the in-plane of the magnetic layer measured in a direction vertical to the running direction is defined as R2. The magnetic recording medium has an excellent SNR. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使在使用诸如GMR头的高灵敏度头的系统中，也提供用于获得高信噪比的磁记录介质。解决方案：在非磁性支撑体上具有非磁性支撑体和磁性层的磁记录介质中，磁性层包含粒状或椭圆形的氮化铁基磁性粉末，其包含Fe 16 < SB> N 2 相和粘合剂，并且具有0.55至0.70的面内平行矩形度R1和面内垂直平方度R2与平面内平行的比率（R2 / R1）当记录和再现信号时，在与磁记录介质的行进方向平行的方向上测量的磁性层的面内的面内平行矩形比定义为R1，矩形度R1为0.50〜0.90，在垂直于运行方向的方向上测量的磁性层的平面内的面内垂直平方度被定义为R2。磁记录介质具有优异的SNR。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2009028708A Magnetic particle-deposited catalyst, method for manufacturing the same, electrode using the same for fuel cell, and fuel cell 审中-公开
标题翻译：磁性颗粒沉积催化剂，其制造方法，使用它们的燃料电池的电极和燃料电池
公开(公告)号：JP2009028708A
公开(公告)日：2009-02-12
申请号：JP2007332941
申请日：2007-12-25
申请人： Hitachi Maxell Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 日立マクセル株式会社
发明人： SAWAKI HIROKO , KISHIMOTO MIKIO , NAKANISHI HARUMICHI , IMANISHI MASAHIRO , KAWAI HIROYUKI
IPC分类号： B01J23/89 , B01J35/02 , B01J37/08 , B22F1/00 , B22F5/00 , C22C5/04 , C22C19/07 , H01M4/88 , H01M4/90 , H01M8/10
CPC分类号： Y02P70/56
摘要： PROBLEM TO BE SOLVED: To provide a magnetic particle-deposited catalyst capable of achieving a high-output fuel cell having high catalyst efficiency. SOLUTION: The first magnetic powder-deposited catalyst contains an electrically conductive particle and a catalyst particle deposited on the electrically conductive particle and haing magnetism, and has 4.0-79.8 kA/m coercivity and 1-20 Am 2 /kg saturation magnetized quantity. The second magnetic powder-deposited catalyst contains the electrically conductive particle, the catalyst particle deposited on the electrically conductive particle and a magnetic particle deposited on the electrically conductive particle, has 4.0-79.8 kA/m coercivity and preferably has 1-20 Am 2 /kg saturation magnetized quantity. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供能够实现具有高催化剂效率的高输出燃料电池的磁性颗粒沉积催化剂。解决方案：第一磁粉沉积催化剂含有导电颗粒和沉积在导电颗粒上的催化剂颗粒和磁性，并且具有4.0-79.8KA / m矫顽力和1-20Am 2 / / SP> / kg饱和磁化量。第二磁粉沉积催化剂包含导电颗粒，沉积在导电颗粒上的催化剂颗粒和沉积在导电颗粒上的磁性颗粒具有4.0-79.8KA / m矫顽力，优选具有1-20Am 2 / kg饱和磁化量。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2009026390A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2009026390A
公开(公告)日：2009-02-05
申请号：JP2007189018
申请日：2007-07-20
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KISHIMOTO MIKIO
IPC分类号： G11B5/708 , G11B5/70 , G11B5/706 , G11B5/714 , G11B5/738 , H01F10/14
摘要： PROBLEM TO BE SOLVED: To obtain a magnetic coating film for drawing the characteristic of a nitrogen-containing magnetic powder to the maximum, having high coercive force and saturation magnetization optimal for high density recording even though having a minute particle size and a granular shape.
SOLUTION: In a magnetic recording medium having a magnetic layer containing magnetic powder and a binder on a non-magnetic support, the magnetic layer contains the magnetic powder and non-magnetic powder, the magnetic powder has at least iron and nitrogen as constituent elements and is the granular magnetic powder including at least an Fe
16 N
2 phase and having 10 to 20 nm average particle size, the non-magnetic powder has 10 to 30 nm average particle size, and a magnetic powder content to the sum total content of the magnetic powder and the non-magnetic powder contained in the magnetic layer is in the range of 40 to 90 wt.%.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题为了获得最大限度地拉伸含氮磁性粉末的特性的磁性涂膜，即使具有微小的粒径和高密度记录，也具有最高的矫顽力和饱和磁化强度，粒状。解决方案：在具有在非磁性载体上含有磁性粉末和粘合剂的磁性层的磁记录介质中，磁性层含有磁性粉末和非磁性粉末，磁性粉末至少具有铁和氮作为并且是至少包含Fe 16 N 2 相并具有10〜20nm平均粒径的粒状磁粉，非磁性粉末具有10〜30 nm平均粒径，磁性粉末含量与磁性层中所含的磁性粉末和非磁性粉末总和的含量在40〜90重量％的范围内。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2008084418A Magnetic recording medium and method for manufacturing the same 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：JP2008084418A
公开(公告)日：2008-04-10
申请号：JP2006262348
申请日：2006-09-27
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： ISOE NOBORU , SASAKI YUJI , MATSUO KAZUKI , KISHIMOTO MIKIO
IPC分类号： G11B5/712 , G11B5/706 , G11B5/714 , G11B5/842 , H01F10/14 , H01F41/32
摘要： PROBLEM TO BE SOLVED: To obtain a magnetic recording medium which has excellent short wavelength recording characteristics, as well as chemical stability and reliability.
SOLUTION: A magnetic layer is formed by using the magnetic powder obtained by bonding a phosphoric acid compound at 4.6x10
-4 to 3.2x10
-3 g/m
2 to the surface of a granular or elliptic magnetic powder using at least iron and nitrogen as constitution elements and including an Fe
16 N
2 phase and having an average particle size of 5 to 50 nm.
COPYRIGHT: (C)2008,JPO&INPIT

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