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公开(公告)号：US09633796B2
公开(公告)日：2017-04-25
申请号：US15095196
申请日：2016-04-11
Applicant: Greatbatch Ltd.
Inventor： Yanming Liu , Barry C. Muffoletto , Jason T. Hahl
IPC: H01G4/232 , H01G9/052 , H01G9/145 , H01G9/10 , H01G9/02 , B22F3/00 , B22F3/11 , B22F1/00 , B22F3/24 , H01G9/00 , B22F5/00
CPC classification number: H01G9/0525 , B22F1/0096 , B22F3/002 , B22F3/11 , B22F3/24 , B22F5/00 , B22F2998/10 , B22F2999/00 , H01G9/0029 , H01G9/0032 , H01G9/02 , H01G9/052 , H01G9/10 , H01G9/145 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2003/242 , B22F2201/11 , B22F1/0014 , B22F1/004 , B22F3/1109
Abstract: Tantalum powders produced using a tantalum fiber precursor are described. The tantalum fiber precursor is chopped or cut into short lengths having a uniform fiber thickness and favorable aspect ratio. The chopped fibers are formed into a primary powder having a controlled size and shape, narrow/tight particle size distribution, and low impurity level. The primary powder is then agglomerated into an agglomerated powder displaying suitable flowability and pressability such that pellets with good structural integrity and uniform pellet porosity are manufacturable. The pellet is sintered and anodized to a desired formation voltage. The thusly created capacitor anode has a dual morphology or dual porosity provided by a primary porosity of the individual tantalum fibers making up the primary powder and a larger secondary porosity formed between the primary powders agglomerated into the agglomerated powder.
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Patent Agency Ranking
公开(公告)号：USRE47560E1
公开(公告)日：2019-08-06
申请号：US15596784
申请日：2017-05-16
Applicant: Greatbatch Ltd.
Inventor： Yanming Liu , Barry C. Muffoletto , Jason T. Hahl
Abstract: Tantalum powders produced using a tantalum fiber precursor are described. The tantalum fiber precursor is chopped or cut into short lengths having a uniform fiber thickness and favorable aspect ratio. The chopped fibers are formed into a primary powder having a controlled size and shape, narrow/tight particle size distribution, and low impurity level. The primary powder is then agglomerated into an agglomerated powder displaying suitable flowability and pressability such that pellets with good structural integrity and unifrom pellet porosity are manufacturable. The pellet is sintered and anodized to a desired formation voltage. The thusly created capacitor anode has a dual morphology or dual porosity provided by a primary porosity of the individual tantalum fibers making up the primary powder and a larger secondary porosity formed between the primary powders agglomerated into the agglomerated powder.
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公开(公告)号：USRE48905E1
公开(公告)日：2022-01-25
申请号：US14534357
申请日：2014-11-06
Applicant: Greatbatch Ltd.
Inventor： Yanming Liu , Ashish Shah
Abstract: The present invention is directed to an electrolyte for an electrolytic capacitor. The capacitor has an electrolytic anode and an electrochemical cathode. The electrolyte has water, a water soluble organic salt, and a relatively weak organic acid. This electrolyte is chemically compatible to aluminum and tantalum oxide dielectrics and withstands higher voltage while maintaining good conductivity. This makes the electrolyte especially useful for high voltage applications, such as occur in an implantable cardiac defibrillator.
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公开(公告)号：USRE48439E1
公开(公告)日：2021-02-16
申请号：US16381423
申请日：2019-04-11
Applicant: Greatbatch Ltd.
Inventor： Yanming Liu , Barry C. Muffoletto , Jason T. Hahl
Abstract: Tantalum powders produced using a tantalum fiber precursor are described. The tantalum fiber precursor is chopped or cut into short lengths having a uniform fiber thickness and favorable aspect ratio. The chopped fibers are formed into a primary powder having a controlled size and shape, narrow/tight particle size distribution, and low impurity level. The primary powder is then agglomerated into an agglomerated powder displaying suitable flowability and pressability such that pellets with good structural integrity and uniform pellet porosity are manufacturable. The pellet is sintered and anodized to a desired formation voltage. The thusly created capacitor anode has a dual morphology or dual porosity provided by a primary porosity of the individual tantalum fibers making up the primary powder and a larger secondary porosity formed between the primary powders agglomerated into the agglomerated powder.
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公开(公告)号：US09312075B1
公开(公告)日：2016-04-12
申请号：US14479689
申请日：2014-09-08
Applicant: Greatbatch Ltd.
Inventor： Yanming Liu , Barry C. Muffoletto , Jason T. Hahl
CPC classification number: H01G9/0525 , B22F1/0096 , B22F3/24 , B22F5/00 , B22F2998/10 , B22F2999/00 , H01G9/0032 , H01G9/02 , H01G9/052 , H01G9/145 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2003/242 , B22F2201/11 , B22F1/0014
Abstract: Tantalum powders produced using a tantalum fiber precursor are described. The tantalum fiber precursor is chopped or cut into short lengths having a uniform fiber thickness and favorable aspect ratio. The chopped fibers are formed into a primary powder having a controlled size and shape, narrow/tight particle size distribution, and low impurity level. The primary powder is then agglomerated into an agglomerated powder displaying suitable flowability and pressability such that pellets with good structural integrity and unifrom pellet porosity are manufacturable. The pellet is sintered and anodized to a desired formation voltage. The thusly created capacitor anode has a dual morphology or dual porosity provided by a primary porosity of the individual tantalum fibers making up the primary powder and a larger secondary porosity formed between the primary powders agglomerated into the agglomerated powder.
Abstract translation: 描述了使用钽纤维前体制备的钽粉末。 将钽纤维前体切碎或切割成具有均匀的纤维厚度和有利的纵横比的短长度。 短切纤维形成具有受控尺寸和形状，窄/紧密粒度分布和低杂质水平的初级粉末。 然后将初级粉末凝聚成显示合适的流动性和压制性的附聚粉末，使得具有良好结构完整性和均匀颗粒孔隙度的颗粒是可制造的。 将颗粒烧结并阳极氧化至所需的地层电压。 由此产生的电容器阳极具有由构成初级粉末的各个钽纤维的初级孔隙率提供的双重形态或双重孔隙，并且在附聚到聚集的粉末中的初级粉末之间形成较大的次生孔隙。
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公开(公告)号：US20160225533A1
公开(公告)日：2016-08-04
申请号：US15095196
申请日：2016-04-11
Applicant: Greatbatch Ltd.
Inventor： Yanming Liu , Barry C. Muffoletto , Jason T. Hahl
CPC classification number: H01G9/0525 , B22F1/0096 , B22F3/002 , B22F3/11 , B22F3/24 , B22F5/00 , B22F2998/10 , B22F2999/00 , H01G9/0029 , H01G9/0032 , H01G9/02 , H01G9/052 , H01G9/10 , H01G9/145 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2003/242 , B22F2201/11 , B22F1/0014 , B22F1/004 , B22F3/1109
Abstract: Tantalum powders produced using a tantalum fiber precursor are described. The tantalum fiber precursor is chopped or cut into short lengths having a uniform fiber thickness and favorable aspect ratio. The chopped fibers are formed into a primary powder having a controlled size and shape, narrow/tight particle size distribution, and low impurity level. The primary powder is then agglomerated into an agglomerated powder displaying suitable flowability and pressability such that pellets with good structural integrity and uniform pellet porosity are manufacturable. The pellet is sintered and anodized to a desired formation voltage. The thusly created capacitor anode has a dual morphology or dual porosity provided by a primary porosity of the individual tantalum fibers making up the primary powder and a larger secondary porosity formed between the primary powders agglomerated into the agglomerated powder.
Abstract translation: 描述了使用钽纤维前体制备的钽粉末。 将钽纤维前体切碎或切割成具有均匀的纤维厚度和有利的纵横比的短长度。 短切纤维形成具有受控尺寸和形状，窄/紧密粒度分布和低杂质水平的初级粉末。 然后将初级粉末凝聚成显示合适的流动性和压制性的附聚粉末，使得具有良好的结构完整性和均匀的颗粒孔隙率的颗粒是可制造的。 将颗粒烧结并阳极氧化至所需的地层电压。 由此产生的电容器阳极具有由构成初级粉末的各个钽纤维的初级孔隙率提供的双重形态或双重孔隙，并且在附聚到聚集的粉末中的初级粉末之间形成较大的次生孔隙。
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