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公开(公告)号：US4960654A
公开(公告)日：1990-10-02
申请号：US399937
申请日：1989-08-29
Applicant: Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Takeshi Hamabe , Motoi Kitano , Hideyuki Yoshida
Inventor： Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Takeshi Hamabe , Motoi Kitano , Hideyuki Yoshida
IPC: C22C49/00
CPC classification number: C22C49/00 , Y10T428/12486 , Y10T428/25 , Y10T428/256
Abstract: A metal composition comprising zinc oxide whiskers dispersed in a metal matrix. The whiskers comprise at least one needle crystal having a basal part whose diameter is from 0.7 to 14 micrometers and a length from the basal part to its tip of from 3 to 200 micrometers. The metal composition is isotropically reinforced with respect to mechanical strength and is significantly improved in free cuttability.
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公开(公告)号：US5310598A
公开(公告)日：1994-05-10
申请号：US804541
申请日：1991-12-11
Applicant: Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Kouziro Matsuo , Hidenosuke Nakamura
Inventor： Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Kouziro Matsuo , Hidenosuke Nakamura
CPC classification number: H01Q17/002 , Y10S428/91 , Y10S428/919 , Y10S428/928 , Y10T428/256 , Y10T428/298 , Y10T428/2993
Abstract: A radio wave absorbing material comprising zinc oxide whiskers. In a preferred embodiment, the zinc oxide whiskers are comprised of a central part and needle crystal projections extending from said central part in plural different axial directions.
Abstract translation: 一种包含氧化锌晶须的无线电波吸收材料。 在优选的实施方案中，氧化锌晶须由在多个不同轴向上从中心部分延伸的中心部分和针状晶体突起组成。
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公开(公告)号：US5158643A
公开(公告)日：1992-10-27
申请号：US566475
申请日：1991-02-26
Applicant: Minoru Yoshinaka , Eizo Asakura , Motoi Kitano , Jun Yagi , Hideyuki Yoshida , Takashige Sato
Inventor： Minoru Yoshinaka , Eizo Asakura , Motoi Kitano , Jun Yagi , Hideyuki Yoshida , Takashige Sato
IPC: C30B25/00
CPC classification number: C30B25/005 , C30B29/16
Abstract: The present invention provides a method for manufacturing zinc oxide whiskers, whereby zinc powders composed of particles coated with an oxide film, preferably an oxide film having a superior sealing property are, heated for oxidization in an atmosphere containing oxygen.The atmosphere may contain carbon dioxide or steam.The obtained zinc oxide whiskers are formed in a single crystal comprised of a core part and an acicular part spreading in four different directions from the core part.For a baking furnace to obtain zinc oxide whiskers, is employed one that successively forms an atmosphere of a high partial pressure of zinc steam at the source side and an atmosphere of a high partial pressure of oxygen for facilitating formation of whiskers. The zinc oxide whiskers can be controlled in size by selecting the relative ratio of the partial pressure of zinc steam and oxygen.Accordingly, zinc oxide whiskers obtained by the present invention are formed in a single crystal without anisotropy, thereby being applicable to a variety of constructional or electronic materials with no anisotropy in strength and electric properties. Because the resultant crystal is several hundreds .mu.m, the zinc oxide whiskers may be mixed with metals, ceramics or synthetic resins, etc. to increase the mechanical strength thereof remarkably.
Abstract translation: PCT No.PCT / JP89 / 01245 Sec。 371日期：1992年2月26日 102（e）日期1991年2月26日PCT提交1989年12月13日PCT公布。 出版物WO90 / 0702200 日本1982年6月28日。本发明提供了一种制造氧化锌晶须的方法，其中由氧化膜，优选具有优异密封性的氧化物膜组成的锌粉末在含氧气氛中加热氧化 。 大气中可能含有二氧化碳或蒸气。 得到的氧化锌晶须形成为由芯部和从芯部四个不同方向扩展的针状部分构成的单晶。 对于用于获得氧化锌晶须的烘烤炉，采用在源极侧依次形成锌蒸汽的高分压气氛和高分压氧的气氛，以便于形成晶须。 可以通过选择锌蒸气和氧气的分压的相对比例来控制氧化锌晶须的尺寸。 因此，通过本发明获得的氧化锌晶须形成为不具有各向异性的单晶，从而适用于各种不具有各向异性强度和电性能的结构或电子材料。 由于所得到的晶体为数百μm，氧化锌晶须可与金属，陶瓷或合成树脂等混合，从而显着提高其机械强度。
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Patent Agency Ranking
公开(公告)号：US5318837A
公开(公告)日：1994-06-07
申请号：US809623
申请日：1991-12-17
Applicant: Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Takeshi Hamabe , Motoi Kitano
Inventor： Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Takeshi Hamabe , Motoi Kitano
CPC classification number: E04C5/073 , C04B14/005 , C04B14/4618 , C04B35/80 , C08K7/08 , C22C49/00 , C04B2111/52 , Y10T428/25 , Y10T428/256 , Y10T428/31605 , Y10T428/31609
Abstract: Soundproofing materials consisting essentially of zinc oxide whisker particles having a nucleus body and needle crystal portions extending radially from the central body in different plural directions. The materials may comprise a support material for supporting the zinc oxide whisker particles. Such support materials include inorganic materials such as metals, ceramics, glasses, cements, mortars and various fillers in the form of powder, flakes, fibers and the like, and organic materials such as resins, rubbers, waxes and the like. These materials are particularly suitable for sound insulation, sound proofing, vibration damping and vibration insulation.
Abstract translation: 隔音材料基本上由具有核心的氧化锌晶须颗粒和在不同的多个方向上从中心体径向延伸的针状晶体部分组成。 材料可以包括用于支撑氧化锌晶须颗粒的支撑材料。 这种支撑材料包括无机材料如金属，陶瓷，玻璃，水泥，砂浆和粉末，薄片，纤维等形式的各种填料，以及有机材料如树脂，橡胶，蜡等。 这些材料特别适用于隔音，隔音，减震和隔振。
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5.发明授权Conductive resin composition containing zinc oxide whiskers having a tetrapod structure 失效含有具有四面体结构的锌氧化物的导电树脂组合物
公开(公告)号：US5183594A
公开(公告)日：1993-02-02
申请号：US399116
申请日：1989-08-28
Applicant: Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Motoi Kitano , Yoshio Nakatani , Hideyuki Yoshida , Toshiya Hatta , Seiichi Nakatani
Inventor： Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Motoi Kitano , Yoshio Nakatani , Hideyuki Yoshida , Toshiya Hatta , Seiichi Nakatani
Abstract: A conductive composition containing at least zinc oxide whiskers. The conductive composition can be used to provide a conductive resing composition and a conductive coating composition, which have various uses, particularly in conductive layers, conductive supports or protective layers of electrophotographic photosensitive members.
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6.发明授权Electrophotographic photosensitive member containing a conductive layer which comprises a resin and a conductive zinc oxide having a tetrapad structure 失效包含导电层的电子照相感光构件，其包含树脂和具有四面体结构的导电氧化锌
公开(公告)号：US5171480A
公开(公告)日：1992-12-15
申请号：US785379
申请日：1991-10-30
Applicant: Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Motoi Kitano , Yoshio Nakatani , Hideyuki Yoshida , Toshiya Hatta , Seiichi Nakatani
Inventor： Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Motoi Kitano , Yoshio Nakatani , Hideyuki Yoshida , Toshiya Hatta , Seiichi Nakatani
Abstract: A conductive composition containing at least zinc oxide whiskers having a tetrapod structure. The conductive composition can be used to provide a conductive resin composition and a conductive coating composition, which have various uses, particularly in conductive layers, conductive supports or protective layers of electrophotographic photosensitive members.
Abstract translation: 至少含有具有四脚架结构的氧化锌晶须的导电组合物。 导电组合物可用于提供具有各种用途的导电树脂组合物和导电涂料组合物，特别是导电层，导电载体或电子照相感光构件的保护层。
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公开(公告)号：US5164260A
公开(公告)日：1992-11-17
申请号：US452441
申请日：1989-12-19
Applicant: Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Takeshi Hamabe , Motoi Kitano
Inventor： Minoru Yoshinaka , Eizo Asakura , Mitsumasa Oku , Takeshi Hamabe , Motoi Kitano
CPC classification number: E04C5/073 , C04B14/005 , C04B14/4618 , C04B35/80 , C08K7/08 , C22C49/00 , C04B2111/52 , Y10T428/25 , Y10T428/256 , Y10T428/31605 , Y10T428/31609
Abstract: Soundproofing materials consisting essentially of zinc oxide whisker particles having a nucleus body and needle crystal portions extending radially from the central body in different plural directions. The materials may comprise a support material for supporting the zinc oxide whisker particles. Such support materials include inorganic materials such as metals, ceramics, glasses, cements, mortars and various fillers in the form of powder, flakes, fibers and the like, and organic materials such as resins, rubbers, waxes and the like. These materials are particularly suitable for sound insulation, sound proofing, vibration damping and vibration insulation.
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8.发明授权Zinc oxide whiskers having a novel crystalline form and method for making same 失效具有新型结晶形式的氧化锌助洗剂及其制造方法
公开(公告)号：US5066475A
公开(公告)日：1991-11-19
申请号：US291611
申请日：1988-12-29
Applicant: Minoru Yoshinaka , Eizo Asakura , Toshihiro Misaki , Motoi Kitano , Hideyuki Yoshida
Inventor： Minoru Yoshinaka , Eizo Asakura , Toshihiro Misaki , Motoi Kitano , Hideyuki Yoshida
IPC: C04B35/453 , C04B35/65 , C04B35/80 , C08K7/08 , C30B25/00
CPC classification number: C08K7/08 , C04B35/453 , C04B35/65 , C04B35/803 , C30B25/005 , C30B29/16 , C30B29/60 , Y10T428/12486
Abstract: Whiskers of zinc oxide whose crystal structure includes a central body and four needle crystal projections radially extending from said central body are described. The whiskers are so unique a structure that they are applicable to various materials such as metals, resins, ceramics and the like as a reinforcing material. The whiskers may be in the form of a mixture of whiskers of zinc oxide having crystal structures including two, three, four and/or five needle crystal projections. A method for preparing such whiskers is also described.
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