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51. 发明授权

US5836249A Laser ablation imaging of zirconia-alumina composite ceramic printing member 失效
标题翻译：氧化锆 - 氧化铝复合陶瓷印刷部件的激光烧蚀成像
公开(公告)号：US5836249A
公开(公告)日：1998-11-17
申请号：US848332
申请日：1997-05-01
申请人： Dilip K. Chatterjee , Syamal K. Ghosh
发明人： Dilip K. Chatterjee , Syamal K. Ghosh
IPC分类号： B41C1/10 , B41N1/00
CPC分类号： B41N1/006 , B41C1/1033 , B41C1/1041 , Y10S430/146
摘要： Reusable lithographic printing members are prepared from a ceramic that is a composite of a zirconia alloy and .alpha.-alumina. In use, a printing surface of the zirconia-alumina composite ceramic is imagewise exposed to electromagnetic radiation such as from a laser under controlled conditions to provide ablation of the zirconia alloy in the exposed areas. Those areas are transformed from a hydrophilic to an oleophilic state or from an oleophilic to a hydrophilic state, thereby creating a lithographic printing surface that is hydrophilic in non-image areas and is oleophilic and thus capable of accepting printing ink in image areas. Such inked areas can then be used to transfer an image to a suitable substrate in lithographic printing. The printing members are directly laser-imageable as well as image erasable, and can include printing plates, printing cylinders, printing tapes and printing sleeves.
摘要翻译：可再利用的平版印刷构件由氧化锆合金和α-氧化铝的复合材料制成。在使用中，氧化锆 - 氧化铝复合陶瓷的印刷表面在受控条件下成像暴露于诸如激光的电磁辐射，以在暴露的区域中提供氧化锆合金的烧蚀。这些区域从亲水性状态转变为亲油性状态或从亲油性状态转变为亲水状态，从而产生在非图像区域中亲水的亲和性并且因此能够接受图像区域中的印刷油墨的平版印刷表面。然后可以使用这样的油墨区域在平版印刷中将图像转印到合适的基底上。印刷部件直接可激光成像，图像可擦除，可包括印版，印刷滚筒，印刷胶带和印刷套筒。

52. 发明授权

US5836248A Zirconia-alumina composite ceramic lithographic printing member 失效
标题翻译：氧化锆 - 氧化铝复合陶瓷平版印刷部件
公开(公告)号：US5836248A
公开(公告)日：1998-11-17
申请号：US850315
申请日：1997-05-01
申请人： Gregory S. Jarrold , Dilip K. Chatterjee , Syamal K. Ghosh
发明人： Gregory S. Jarrold , Dilip K. Chatterjee , Syamal K. Ghosh
IPC分类号： B41C1/10 , B41N1/00 , B41N1/14
CPC分类号： B41N1/006 , B41C1/1041
摘要： Long wearing and reusable lithographic printing members are prepared from a ceramic that is a composite of a zirconia alloy and .alpha.-alumina. In use, a surface of the zirconia-alumina composite ceramic printing member is imagewise exposed to electromagnetic radiation which transforms it from a hydrophilic to an oleophilic state or from an oleophilic to a hydrophilic state, thereby creating a lithographic printing surface which is hydrophilic in non-image areas and is oleophilic and thus capable of accepting printing ink in image areas. Such inked areas can then be used to transfer an image to a suitable substrate in lithographic printing. These printing members are directly laser-imageable as well as image erasable.
摘要翻译：长磨损和可再利用的平版印刷构件由氧化锆合金和α-氧化铝的复合材料制成。在使用中，氧化锆 - 氧化铝复合陶瓷印刷部件的表面被成像地暴露于电磁辐射，其将其从亲水性状态转变为亲油性状态或从亲油性转变为亲水状态，从而产生非平版印刷表面， - 图像区域，并且是亲油的，因此能够在图像区域中接受印刷油墨。然后可以使用这样的油墨区域在平版印刷中将图像转印到合适的基底上。这些印刷部件直接可激光成像，图像可擦除。

53. 发明授权

US5829881A Wear resistant apparatus and method for translating a printing element relative to a frame 失效
标题翻译：用于相对于框架平移打印元件的耐磨设备和方法
公开(公告)号：US5829881A
公开(公告)日：1998-11-03
申请号：US845338
申请日：1997-04-25
申请人： Edward P. Furlani , Syamal K. Ghosh , Roger S. Kerr
发明人： Edward P. Furlani , Syamal K. Ghosh , Roger S. Kerr
IPC分类号： B41J19/20 , B41J29/02 , F16C29/02 , H04N1/06 , F16C33/12
CPC分类号： H04N1/0671 , B41J29/02 , H04N1/06 , H04N2201/0442
摘要： An apparatus and method for translating a printing element relative to a frame has a wear resistant coating on translational rod bearings which support the element, such as a scanner, for slidable movement along a frame. Titanium nitride is coated over a hardened stainless steel core of the translational rod bearings and bearing pads which are arranged for sliding contact with the translational rod bearings. The bearing pads comprise diamond laminated tungsten carbide.
摘要翻译：用于相对于框架平移印刷元件的装置和方法在平移杆轴承上具有耐磨涂层，其支撑诸如扫描仪的元件，以沿着框架可滑动。氮化钛涂覆在平移杆轴承和支承垫的硬化不锈钢芯上，其布置成与平移杆轴承滑动接触。轴承垫包括金刚石层压碳化钨。

54. 发明授权

US5803852A Ceramic drive system 失效
标题翻译：陶瓷驱动系统
公开(公告)号：US5803852A
公开(公告)日：1998-09-08
申请号：US826628
申请日：1997-04-03
申请人： John A. Agostinelli , Dilip K. Chatterjee , Syamal K. Ghosh
发明人： John A. Agostinelli , Dilip K. Chatterjee , Syamal K. Ghosh
IPC分类号： C04B35/48 , F16G13/02 , F16G13/06 , F16H7/06 , F16H55/30 , F16H55/48
CPC分类号： F16H7/06 , F16G13/06 , F16H55/30
摘要： A ceramic drive system includes highly efficient, light weight, durable, and wear and abrasion resistant sliding and rotating components. In particular, the components of the ceramic drive system has center links, center rollers and sprockets arranged for sliding and rotating contact and each comprising high precision tetragonal zirconia polycrystal (TZP) ceramic or alternatively zirconia-alumina ceramic composite.
摘要翻译：陶瓷驱动系统包括高效，重量轻，耐用，耐磨和耐磨滑动和旋转部件。特别地，陶瓷驱动系统的部件具有设置用于滑动和旋转接触的中心连杆，中心辊和链轮，并且每个包括高精度四方晶氧化锆多晶（TZP）陶瓷或氧化锆 - 氧化铝陶瓷复合材料。

55. 发明授权

US5735985A Method for micromolding ceramic structures 失效
标题翻译：微型陶瓷结构的方法
公开(公告)号：US5735985A
公开(公告)日：1998-04-07
申请号：US749256
申请日：1996-11-15
申请人： Syamal K. Ghosh , Edward P. Furlani , William J. Grande
发明人： Syamal K. Ghosh , Edward P. Furlani , William J. Grande
IPC分类号： B28B3/02 , B28B1/00 , B28B7/34 , C04B35/486 , C04B35/622 , B32B31/26 , B29C33/40
CPC分类号： B28B7/346 , B28B1/002 , C04B35/486 , C04B35/622 , B29K2883/00
摘要： A method for micromolding ceramic articles and structures having spatial features as small as 0.1 .mu.m and having a depth ranging from 2.0 .mu.m to 100 .mu.m. A master mold of the article or structure to be molded is first fabricated using a silicon wafer and dry etching technology. A negative master mold is then produced by placing the silicon master mold device in a surrounding mold form and filling the surrounding mold form with a silicone or silicone rubber, preferably an RTV.TM. (a room temperature-vulcanizing silicone rubber compound). Such material replicates each of the micro features of the master mold in great detail to a resolution on the order of 0.1 .mu.m. The negative master mold is then used in a die to mold the desired individual elements or structures from a ceramic powder which is capable of replicating each of the micro features of the negative master mold to the desired resolution. Depending on the resolution required in a particular micromolded element, it may be necessary to use ceramic nano-particles in the micromolding process. For resolution of spatial features having dimensions as small as 0.1 .mu.m and a depth of about 2.0 .mu.m, ceramic nano-particles ranging in size from about 0.01 .mu.m to about 0.02 .mu.m can be used to micromold these features. If an integral structure is to be created from multiple micromolded ceramic elements, the elements are first assembled prior to sintering. Sintering results in an integration of the assembled elements to form a contiguous structure. A single element, or alternatively, multiple elements can be molded simultaneously from the stone mold cavity preferably using a dry pressing process or, in the alternative, a cold isostatic pressing process.
摘要翻译：具有小至0.1μm的空间特征并且深度在2.0μm至100μm之间的陶瓷制品和结构的微成型方法。首先使用硅晶片和干蚀刻技术来制造待模制的制品或结构的主模具。然后通过将硅主模具装置放置在周围的模具形状中并用硅树脂或硅橡胶，优选RTV TM（室温硫化硅橡胶复合物）填充周围的模具形状来制造负模具。这样的材料将主模具的每个微观特征复制到大约0.1μm的分辨率上。然后将负母模用于模具中以从能够将负母模的每个微特征复制到期望分辨率的陶瓷粉末模制所需的各个元件或结构。根据特定微成型元件中所需的分辨率，可能需要在微型成型工艺中使用陶瓷纳米颗粒。为了解决具有小至0.1μm的尺寸和约2.0μm的深度的空间特征，可以使用尺寸为约0.01μm至约0.02μm的陶瓷纳米颗粒来微观地显示这些特征。如果从多个微成型陶瓷元件产生整体结构，则元件首先在烧结之前组装。烧结导致组合的元件的集成以形成连续的结构。单个元件或可选地，多个元件可以从石模腔同时模制，优选使用干压工艺，或者替代地，冷等静压制工艺。

56. 发明授权

US5733588A Ceramic molding equipment 失效
标题翻译：陶瓷成型设备
公开(公告)号：US5733588A
公开(公告)日：1998-03-31
申请号：US740452
申请日：1996-10-28
申请人： Dilip K. Chatterjee , Syamal K. Ghosh
发明人： Dilip K. Chatterjee , Syamal K. Ghosh
IPC分类号： B28B13/02 , B30B11/00 , B30B15/30 , C04B35/119 , C04B35/486 , B29C43/34
CPC分类号： B30B11/001 , B28B13/023 , B30B15/304 , C04B35/119 , C04B35/486
摘要： An improved molding equipment includes highly efficient, durable, and wear and abrasion resistant sliding elements. In particular, the equipment has a feeder box and a ware plate arranged for sliding contact each comprising high precision tetragonal zirconia polycrystal (TZP) ceramic or alternatively zirconia-alumina ceramic composite. Moreover, a die cavity arranged along the ware plate has a ceramic die retaining element to enable high efficiency as well as wear and abrasion resistant sliding contact with the feeder box.
摘要翻译：改进的成型设备包括高效，耐用，耐磨和耐磨滑动元件。特别地，设备具有布置成用于滑动接触的馈送盒和器皿，每个包括高精度四方晶氧化锆多晶（TZP）陶瓷或氧化锆 - 氧化铝陶瓷复合材料。此外，沿着陶瓷板布置的模腔具有陶瓷模具保持元件，以实现高效率以及与馈送盒的耐磨损和耐磨滑动接触。

57. 发明授权

US5688731A Ceramic articles containing doped zirconia having high electrical conductivity 失效
标题翻译：含有高导电性的掺杂氧化锆的陶瓷制品
公开(公告)号：US5688731A
公开(公告)日：1997-11-18
申请号：US746536
申请日：1996-11-13
申请人： Dilip K. Chatterjee , Gregory S. Jarrold , Syamal K. Ghosh
发明人： Dilip K. Chatterjee , Gregory S. Jarrold , Syamal K. Ghosh
IPC分类号： C04B35/48 , C04B35/488 , C04B35/58
CPC分类号： C04B35/488
摘要： Electrically conductive ceramic composite articles comprising tetragonal zirconia or a composite of zirconia-alumina and zirconium diboride.
摘要翻译：包括四方晶氧化锆或氧化锆 - 氧化铝和二硼化锆的复合材料的导电陶瓷复合制品。

58. 发明授权

US5683481A Method of making core shell structured articles based on alumina ceramics having spinel surfaces 失效
标题翻译：基于具有尖晶石表面的氧化铝陶瓷制造芯壳结构制品的方法
公开(公告)号：US5683481A
公开(公告)日：1997-11-04
申请号：US700256
申请日：1996-08-20
申请人： Dilip K. Chatterjee , Syamal K. Ghosh , Gregory S. Jarrold
发明人： Dilip K. Chatterjee , Syamal K. Ghosh , Gregory S. Jarrold
IPC分类号： C04B35/10 , C04B35/119 , C04B35/64 , C04B41/50 , C04B41/87 , C03B19/01 , C03B19/09 , C04B33/34 , C04B33/36
CPC分类号： C04B41/009 , C04B35/119 , C04B35/64 , C04B41/5046 , C04B41/87 , C04B2111/0025
摘要： An alumina ceramic article and a method for preparing the article. The method comprises the steps of: (1) Compacting a mixture of a first concentration of particulate aluminum oxide sufficient to prevent retention of the zirconium oxide alloy particles in the shell in a predominantly tetragonal crystal structure and a second concentration of particulate zirconium oxide alloy. The zirconium oxide alloy is zirconium oxide and a secondary oxide selected from the group consisting of MgO, CaO, Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, CeO.sub.2, and rare earth oxides having a concentration of secondary oxide generally of about 0.5 to about 5 mole percent Y.sub.2 O.sub.3, from about 0.1 to about 1 mole percent MgO, from about 0.5 to about 15 mole percent CeO.sub.2, from about 0.5 to about 7.0 mole percent Sc.sub.2 O.sub.3, or from about 0.5 to about 5 mole percent CaO, relative to the total of the zirconium oxide alloy. The compacting results in the formation of a blank.(2) Providing contact between the blank and a dopant oxide. (3) Sintering the blank in contact with the dopant oxide wherein said first concentration is from 50-75 weight percent of the total of the first and second concentrations.
摘要翻译：一种氧化铝陶瓷制品及其制备方法。该方法包括以下步骤：（1）将第一浓度的微粒氧化铝的混合物压实成足以防止氧化锆合金颗粒以主要为四方晶体结构和第二浓度的颗粒状氧化锆合金在壳中的保留。氧化锆合金是氧化锆和选自MgO，CaO，Y 2 O 3，Sc 2 O 3，CeO 2的二次氧化物和二氧化硫浓度通常为约0.5〜约5摩尔％Y 2 O 3的稀土氧化物，从约 0.1至约1摩尔％的MgO，约0.5至约15摩尔％的CeO 2，约0.5至约7.0摩尔％的Sc 2 O 3，或约0.5至约5摩尔％的CaO，相对于氧化锆合金的总量。压实导致形成空白。（2）提供坯料与掺杂剂氧化物之间的接触。（3）烧结坯料与掺杂剂氧化物接触，其中所述第一浓度为第一和第二浓度总量的50-75重量％。

59. 发明授权

US5672302A In-situ surface nitridation of zirconia ceramics 失效
标题翻译：氧化锆陶瓷的原位表面氮化
公开(公告)号：US5672302A
公开(公告)日：1997-09-30
申请号：US728320
申请日：1996-10-09
申请人： Dilip K. Chatterjee , Syamal K. Ghosh , Gregory S. Jarrold
发明人： Dilip K. Chatterjee , Syamal K. Ghosh , Gregory S. Jarrold
IPC分类号： B23P15/28 , C04B35/48 , C04B35/486 , C04B35/64 , C04B41/50 , C04B41/87 , H05F1/02
CPC分类号： C04B41/009 , C04B35/486 , C04B35/64 , C04B41/5062 , C04B41/87
摘要： A method for preparing a ceramic article, the method comprising the steps of: 1) compacting a mixture of particulate zirconium diboride and a zirconium oxide or zirconium oxide alloy or composite thereof which results in the formation of a block and 2) sintering the block in a mixture of nitrogen and hydrogen to form a ceramic with a core comprising zirconia and a shell comprising zirconium nitride.
摘要翻译：一种制备陶瓷制品的方法，所述方法包括以下步骤：1）压制二硼化锆和氧化锆或氧化锆合金或其复合物的混合物，导致块形成，和2）将块烧结氮和氢的混合物以形成具有包含氧化锆的核心和包含氮化锆的壳体的陶瓷。

60. 发明授权

US5520601A Ceramic rollers for conveyance of photographic films and paper polymeric webs 失效
标题翻译：用于传送照相胶片和纸聚合物网的陶瓷辊
公开(公告)号：US5520601A
公开(公告)日：1996-05-28
申请号：US403082
申请日：1995-03-13
申请人： Syamal K. Ghosh , Dilip K. Chatterjee , Theodore R. Kolb
发明人： Syamal K. Ghosh , Dilip K. Chatterjee , Theodore R. Kolb
IPC分类号： G03D3/08 , B65H27/00 , C04B35/486 , B23P15/00
CPC分类号： C04B35/486
摘要： A ceramic conveyance roller having a tetragonal phase crystal grain structure includes zirconium oxide and yttria and the molar ratio of yttria to zirconium oxide of from about 3:97 to about 5:95. The outer surface of the ceramic roller has a dimensional tolerance of less than 0.003 inches and the inner surface has a dimensional tolerance of less than 0.0005 inches. The outer surface of the roller can be modified to the cubic phase crystal grain or the monoclinic phase crystal grain.
摘要翻译：具有四方相晶粒结构的陶瓷输送辊包括氧化锆和氧化钇，氧化钇与氧化锆的摩尔比为约3:97至约5:95。陶瓷辊的外表面的尺寸公差小于0.003英寸，内表面的尺寸公差小于0.0005英寸。辊的外表面可以修改为立方相晶粒或单斜晶相晶粒。

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