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1. 发明授权

US07445762B2 Method to partially reduce calcined niobium metal oxide and oxygen reduced niobium oxides 有权
标题翻译：部分还原煅烧铌金属氧化物和氧还原铌氧化物的方法
公开(公告)号：US07445762B2
公开(公告)日：2008-11-04
申请号：US10436448
申请日：2003-05-12
申请人： James A. Fife
发明人： James A. Fife
IPC分类号： C01G1/02
CPC分类号： H01G9/0525 , C01G1/02 , C01G33/00 , C01G35/00 , C01P2002/70 , C01P2004/03 , C01P2004/20 , C01P2004/50 , C01P2004/61 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/40 , C01P2006/80 , C04B35/495 , C04B35/6265 , C04B35/6268 , C04B35/638 , C04B35/64 , C04B2235/02 , C04B2235/3251 , C04B2235/3253 , C04B2235/404 , C04B2235/5409 , C04B2235/6582 , C04B2235/72 , C04B2235/721 , C04B2235/77 , C04B2235/79 , C22C29/12 , C22C2001/1089 , H01G9/042 , H01G9/052 , Y10T29/49002 , Y10T428/12819
摘要： Methods to at least partially reduce a niobium oxide are described wherein the process includes heat treating the niobium oxide in the presence of a getter material and in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the getter material, and for a sufficient time and at a sufficient temperature to form an oxygen reduced niobium oxide. Niobium oxides and/or suboxides are also described as well as capacitors containing anodes made from the niobium oxides and suboxides.
摘要翻译：描述了至少部分还原铌氧化物的方法，其中所述方法包括在吸气剂材料存在下和允许氧原子从氧化铌转移到吸气剂材料的气氛中热处理铌氧化物，并且对于足够的时间和足够的温度以形成氧还原铌氧化物。还描述了铌氧化物和/或低氧化物以及含有由铌氧化物和低氧化物制成的阳极的电容器。

2. 发明授权

US06702869B2 High capacitance niobium powders and electrolytic capacitor anodes 失效
公开(公告)号：US06702869B2
公开(公告)日：2004-03-09
申请号：US10061497
申请日：2002-02-01
申请人： Kurt A. Habecker , James A. Fife
发明人： Kurt A. Habecker , James A. Fife
IPC分类号： C22C2916
CPC分类号： H01G9/0525 , B22F1/0055 , B22F1/0088 , B22F9/023 , B22F9/04 , B22F2009/043 , B22F2998/00 , C22C1/045
摘要： A niobium powder is described which when formed into an electrolytic capacitor anode, the anode has the capacitance of at least 62,000 CV/g. Methods of making flaked niobium powder which have high capacitance capability when formed into electrolytic capacitor anodes is also described. Besides niobium, the present invention is also applicable to other metals, including valve metals.

3. 发明授权

US06444008B1 Paint and coating compositions containing tantalum and/or niobium powders 失效
标题翻译：包含钽和/或铌粉末的涂料和涂料组合物
公开(公告)号：US06444008B1
公开(公告)日：2002-09-03
申请号：US09272406
申请日：1999-03-19
申请人： James A. Fife
发明人： James A. Fife
IPC分类号： C22C2702
CPC分类号： C09D5/38 , C09D167/08 , Y10T428/31678 , Y10T428/31971 , C08L2666/54
摘要： A coating formulation is described in which includes a solvent, a binder, and a metal additive comprising tantalum, niobium, alloys thereof, or mixtures thereof. Also described is a cellulose-based substrate which contains a cellulose-based reinforcing agent, a binder, and a metal additive comprising tantalum, niobium, alloys thereof, or mixtures thereof. Also described is a cement-based or plaster-based substrate containing a cement-based or plaster-based material and a metal additive comprising tantalum, niobium, alloys thereof, or mixtures thereof.
摘要翻译：其中描述了一种涂料配方，其中包括溶剂，粘合剂和包含钽，铌，其合金或其混合物的金属添加剂。还描述了一种基于纤维素的基材，其含有纤维素类增强剂，粘合剂和包含钽，铌，其合金或其混合物的金属添加剂。还描述了含有水泥基或石膏基材料和包含钽，铌，其合金或其混合物的金属添加剂的基于水泥或石膏的基材。

4. 发明授权

US06402066B1 Method of making niobium and other metal powders 失效
公开(公告)号：US06402066B1
公开(公告)日：2002-06-11
申请号：US09527053
申请日：2000-03-16
申请人： Kurt A. Habecker , James A. Fife
发明人： Kurt A. Habecker , James A. Fife
IPC分类号： B02C1912
CPC分类号： H01G9/0525 , B22F1/0055 , B22F1/0085 , B22F1/0088 , B22F9/04 , B22F2009/043 , B22F2998/00 , B22F2999/00 , C22C1/045 , B22F1/0007 , B22F9/023
摘要： Methods of forming niobium powders and other metal powders are described. The method involves milling the metal powders at elevated temperatures and in the presence of at least one liquid solvent. The methods of the present invention have the ability to reduce DC leakage and/or increase capacitance capabilities of metal powders when formed into capacitor anodes. The present invention further has the ability to significantly reduce the milling time necessary to form high surface area metal powders and leads to reducing the amount of contaminants in the metal powders. Metal powders such as niobium powders having reduced amount of contaminants and/or having DC leakage or capacitance capabilities are also described. A process is further described for forming a flaked metal by wet-milling a metal powder into a flaked metal wherein at least one liquid fluorinated fluid is present during the wet-milling process. The process is particularly well suited for forming metal flakes, such as niobium or tantalum flakes, of high purity.

5. 发明授权

US6165623A Niobium powders and niobium electrolytic capacitors 失效
公开(公告)号：US6165623A
公开(公告)日：2000-12-26
申请号：US962830
申请日：1997-11-03
申请人： James A. Fife , Jane Jia Liu , Roger W. Steele
发明人： James A. Fife , Jane Jia Liu , Roger W. Steele
IPC分类号： B22F1/00 , C22C1/04 , H01G9/052 , B32B15/00 , C22C1/00 , C22C27/02 , H01G9/04
CPC分类号： H01G9/0525 , B22F2998/00 , C22C1/045 , B22F9/023
摘要： A flaked niobium powder is disclosed as well as electrolytic capacitors formed from the flaked niobium powders. Niobium powders having a BET surface area of at least about 0.50 m.sup.2 /g are also disclosed and capacitors made therefrom, as well as niobium powders doped with an oxygen content of at least 2,000 ppm. Methods to reduce DC leakage in a niobium anode are also disclosed.

6. 发明授权

US6051326A Valve metal compositions and method 失效
公开(公告)号：US6051326A
公开(公告)日：2000-04-18
申请号：US845736
申请日：1997-04-26
申请人： James A. Fife
发明人： James A. Fife
IPC分类号： C23C2/00 , B22F1/02 , C22C1/04 , C22C27/04 , C23C10/18 , C23C20/02 , H01G9/00 , H01G9/012 , B32B5/14
CPC分类号： H01G9/012 , B22F1/025 , C22C1/045 , Y10S148/902 , Y10T428/12458 , Y10T428/12819
摘要： Valve metal articles such as wire, sheet or powder having a second metal, preferably in a peripheral margin, prepared by coating the valve metal with a salt solution of the metal additive and heat treating in the presence of an oxygen getter to remove the oxygen from the valve metal and the anion of the metal salt to form the metal additive. For tantalum wire a preferred second metal is nickel. A preferred oxygen getter is magnesium. Nickel-containing tantalum wire is useful for enhance bonding to sintered pressed tantalum powder pellets in the production of electrolytic capacitors.

7. 发明授权

US5217526A Fibrous tantalum and capacitors made therefrom 失效
标题翻译： FIBROUS TANTALUM和电容器
公开(公告)号：US5217526A
公开(公告)日：1993-06-08
申请号：US708143
申请日：1991-05-31
申请人： James A. Fife
发明人： James A. Fife
IPC分类号： H01G9/042 , B22F1/00 , B22F3/00 , B22F5/00 , C22C49/00 , H01G9/04 , H01G9/052
CPC分类号： H01G9/042 , B22F1/004 , B22F1/0085 , B22F3/002 , H01G9/0525
摘要： A method of making a tantalum capacitor of improved specific capacitance (and volumetric efficiency) is described. Short tantalum fibers are precipitated out of a carrier liquid to form a felt, or tumbled to form fiber containing particles, and in either case subsequently bonded so as to form a felt or particles containing the fibers in random orientation in substantially non-aligned array. These particles or felt are heated to bond the fibers together, purify and (optionally) cylindricalize them. The felt or particles can be processed in conventional fashion thereafter to form the capacitor. Cylindricalized fibers and pellets of increased surface area are also described.
摘要翻译：描述制造具有改进的比电容（和体积效率）的钽电容器的方法。短的钽纤维从载体液体中沉淀出来以形成毡，或者滚动以形成含纤维的颗粒，并且在任何情况下随后粘合以形成基本上不排列的阵列中随机取向的包含纤维的毡或颗粒。这些颗粒或毡被加热以将纤维粘合在一起，净化和（任选地）使它们圆柱形化。此后可以以常规方式处理毡或颗粒以形成电容器。还描述了圆柱形纤维和增加表面积的颗粒。

8. 发明授权

US5211741A Flaked tantalum powder 失效
标题翻译： FLAKED TANTALUM粉末
公开(公告)号：US5211741A
公开(公告)日：1993-05-18
申请号：US738852
申请日：1991-07-31
申请人： James A. Fife
发明人： James A. Fife
IPC分类号： B22F1/00 , B22F9/04 , C22C1/04 , H01G9/00 , H01G9/052
CPC分类号： H01G9/0525 , C22C1/045
摘要： The invention relates to flaked tantalum powders suitable for use in electrodes and capacitors. The tantalum powders have a mean particle size of about 2 to 55 micrometers, a BET surface area greater than about 0.5 m.sup.2 /g, and an aspect ratio between about 2 and 50. The powders are in the form of fractured flakes, which contain substantially no tapering of their peripheral edges.
摘要翻译：本发明涉及适用于电极和电容器的片状钽粉末。钽粉末的平均粒度为约2至55微米，BET表面积大于约0.5m 2 / g，纵横比在约2至50之间。粉末为断裂片状，其基本上包含它们的外围边缘不变细。

9. 发明授权

US07156893B2 Method of making niobium and other metal powders 失效
标题翻译：制造铌等金属粉末的方法
公开(公告)号：US07156893B2
公开(公告)日：2007-01-02
申请号：US10770895
申请日：2004-02-03
申请人： Kurt A. Habecker , James A. Fife
发明人： Kurt A. Habecker , James A. Fife
IPC分类号： B22F1/00 , H01G9/042
CPC分类号： H01G9/0525 , B22F1/0055 , B22F1/0085 , B22F1/0088 , B22F9/04 , B22F2009/043 , B22F2998/00 , B22F2999/00 , C22C1/045 , B22F1/0007 , B22F9/023
摘要： Methods of forming niobium powders and other metal powders are described. The method involves milling the metal powders at elevated temperatures and in the presence of at least one liquid solvent. The methods of the present invention have the ability to reduce DC leakage and/or increase capacitance capabilities of metal powders when formed into capacitor anodes. The present invention further has the ability to significantly reduce the milling time necessary to form high surface area metal powders and leads to reducing the amount of contaminants in the metal powders. Metal powders such as niobium powders having reduced amount of contaminants and/or having DC leakage or capacitance capabilities are also described. A process is further described for forming a flaked metal by wet-milling a metal powder into a flaked metal wherein at least one liquid fluorinated fluid is present during the wet-milling process. The process is particularly well suited for forming metal flakes, such as niobium or tantalum flakes, of high purity.
摘要翻译：描述了形成铌粉末和其它金属粉末的方法。该方法包括在升高的温度下和在至少一种液体溶剂的存在下研磨金属粉末。当形成电容器阳极时，本发明的方法具有减少金属粉末的DC泄漏和/或增加电容能力的能力。本发明还具有显着减少形成高表面积金属粉末所需的研磨时间并导致减少金属粉末中污染物量的能力。还描述了具有减少的污染物量和/或具有DC泄漏或电容能力的金属粉末，例如铌粉末。进一步描述了通过将金属粉末湿法研磨成片状金属来形成片状金属的方法，其中在湿式研磨过程中存在至少一种液体氟化流体。该方法特别适用于形成高纯度的金属薄片，例如铌或钽薄片。

10. 发明授权

US07099143B1 Wet electrolytic capacitors 有权
公开(公告)号：US07099143B1
公开(公告)日：2006-08-29
申请号：US11136070
申请日：2005-05-24
申请人： James A. Fife , Gang Ning , Brady Jones
发明人： James A. Fife , Gang Ning , Brady Jones
IPC分类号： H01G9/04 , H01G9/145 , H01G9/00
CPC分类号： H01G9/035 , H01G9/0425 , H01G9/145 , Y10T29/417
摘要： A wet electrolytic capacitor that includes an anode, cathode, and a liquid electrolyte disposed therebetween is provided. The cathode contains a metal oxide coating, such as NbO2, in conjunction with other optional coatings to impart improved properties to the capacitor.

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