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公开(公告)号：US20230061466A1
公开(公告)日：2023-03-02
申请号：US17948580
申请日：2022-09-20
Applicant: Greatbatch Ltd.
Inventor： Anthony C. Perez , Christina Scheuer , Barry C. Muffoletto , Jason T. Hahl
Abstract: A wet tantalum electrolytic capacitor containing a cathode, fluidic working electrolyte, and anode formed from an anodically oxidized sintered porous tantalum pellet is described. The pellet is formed from a pressed tantalum powder. The tantalum powder is formed by reacting a tantalum oxide compound, for example, tantalum pentoxide, with a reducing agent that contains a metal having an oxidation state of 2 or more, for example, magnesium. The resulting tantalum powder is nodular or angular and has a specific charge that ranges from about 9,000 μF*V/g to about 11,000 μF*V/g. Using this powder, wet tantalum electrolytic capacitors have breakdown voltages that ranges from about 340 volts to about 450 volts. This makes the electrolytic capacitors ideal for use in an implantable medical device.
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2.发明申请公开(公告)号：US20170125178A1
公开(公告)日：2017-05-04
申请号：US15336016
申请日：2016-10-27
Applicant: Greatbatch Ltd.
Inventor： Anthony C. Perez , Todd C. Sutay , Mark T. Muffoletto
IPC: H01G11/80 , H01G11/28 , H01G11/46 , H01G11/32 , H01G11/58 , H01G11/74 , H01G11/70 , H01G11/52 , H01G11/30
CPC classification number: H01G11/80 , H01G9/0425 , H01G9/048 , H01G9/06 , H01G9/08 , H01G9/14 , H01G9/26 , H01G11/28 , H01G11/30 , H01G11/32 , H01G11/46 , H01G11/52 , H01G11/58 , H01G11/70 , H01G11/74
Abstract: A wet tantalum capacitor of a dual anode design is described. The anodes are housed in their own casing compartments, which are separated from each other by an intermediate partition. Preferably, the casing comprises two clamshell-shaped members that house respective anodes. The clamshells face each other, but are prevented from direct contact by the intermediate partition. The clamshells are welded to opposite sides of the partition to hermetically seal the casing. Prior to sealing, however, cathode active material is contacted to inner face walls of the clamshells and the opposite sides of the partition. The cathode active material is aligned in a face-to-face relationship with major surfaces of the anodes. Preferably, a polymeric restraining device prevents the anode from contacting the case. The hermetically sealed casing is filled with electrolyte thru a port. The fill port is hermetically sealed to complete the capacitor.
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公开(公告)号：US12119186B2
公开(公告)日：2024-10-15
申请号：US17948580
申请日：2022-09-20
Applicant: Greatbatch Ltd.
Inventor： Anthony C. Perez , Christina Scheuer , Barry C. Muffoletto , Jason T. Hahl
Abstract: A wet tantalum electrolytic capacitor containing a cathode, fluidic working electrolyte, and anode formed from an anodically oxidized sintered porous tantalum pellet is described. The pellet is formed from a pressed tantalum powder. The tantalum powder is formed by reacting a tantalum oxide compound, for example, tantalum pentoxide, with a reducing agent that contains a metal having an oxidation state of 2 or more, for example, magnesium. The resulting tantalum powder is nodular or angular and has a specific charge that ranges from about 9,000 μF*V/g to about 11,000 μF*V/g. Using this powder, wet tantalum electrolytic capacitors have breakdown voltages that ranges from about 340 volts to about 450 volts. This makes the electrolytic capacitors ideal for use in an implantable medical device.
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4.发明申请公开(公告)号：US20220208478A1
公开(公告)日：2022-06-30
申请号：US17560540
申请日：2021-12-23
Applicant: Greatbatch Ltd.
Inventor： Anthony C. Perez , Christina Scheuer
Abstract: A capacitor having an anode of a pressed powder pellet is described. The pressed powder anode pellet has a contoured trough that extends inwardly into the height of the pellet from a peripheral edge of the pellet. A shaped anode wire has an embedded portion residing inside the pellet and an outwardly extending portion that is connected to the terminal pin of a feedthrough. The feedthrough is nested in the contoured trough. In order to prevent a crack from rendering the anode inoperable, the embedded portion of the anode wire is shaped to bridge the lateral extent of the contoured trough. Should a crack develop in the anode, the crack will intersect the embedded portion of the anode wire. As an embedded bridging wire structure, the crack in the anode pellet will not cause the shaped anode wire to break. Instead, the shaped anode wire provides electrical continuity from one side of the crack to the other so that the capacitor remains functional.
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公开(公告)号：US11450486B2
公开(公告)日：2022-09-20
申请号：US17221444
申请日：2021-04-02
Applicant: Greatbatch Ltd.
Inventor： Jason T. Hahl , Christina Scheuer , Barry C. Muffoletto , Anthony C. Perez
Abstract: A wet tantalum electrolytic capacitor containing a cathode, fluidic working electrolyte, and anode formed from an anodically oxidized sintered porous tantalum pellet is provided. The pellet is formed from a pressed tantalum powder. The tantalum powder is formed by reacting a tantalum oxide compound, for example, tantalum pentoxide, with a reducing agent that contains a metal having an oxidation state of 2 or more, for example, magnesium. The resulting tantalum powder is nodular or angular and has a specific charge that ranges from about 11,000 μF*V/g to about 14,000 μF*V/g. Using this powder, wet tantalum electrolytic capacitors have breakdown voltages that ranges from about 250 volts to about 400 volts. This makes the electrolytic capacitors ideal for use in an implantable medical device.
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Patent Agency Ranking
公开(公告)号：US20210313118A1
公开(公告)日：2021-10-07
申请号：US17221444
申请日：2021-04-02
Applicant: Greatbatch, Ltd.
Inventor： Jason T. Hahl , Christina Scheuer , Barry C. Muffoletto , Anthony C. Perez
Abstract: A wet tantalum electrolytic capacitor containing a cathode, fluidic working electrolyte, and anode formed from an anodically oxidized sintered porous tantalum pellet is provided. The pellet is formed from a pressed tantalum powder. The tantalum powder is formed by reacting a tantalum oxide compound, for example, tantalum pentoxide, with a reducing agent that contains a metal having an oxidation state of 2 or more, for example, magnesium. The resulting tantalum powder is nodular or angular and has a specific charge that ranges from about 11,000 μF*V/g to about 14,000 μF*V/g. Using this powder, wet tantalum electrolytic capacitors have breakdown voltages that ranges from about 250 volts to about 400 volts. This makes the electrolytic capacitors ideal for use in an implantable medical device.
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公开(公告)号：US09824829B1
公开(公告)日：2017-11-21
申请号：US15467254
申请日：2017-03-23
Applicant: Greatbatch Ltd.
Inventor： Barry C. Muffoletto , Anthony C. Perez
CPC classification number: H01G11/80 , A61N1/378 , H01G9/008 , H01G9/0425 , H01G9/06 , H01G9/08 , H01G9/10 , H01G9/26 , H01G11/46 , H01G11/52
Abstract: A capacitor is described. A casing for the capacitor comprises a container having a face wall joined to a surrounding sidewall extending to a annular edge defining an open end of the container. An inwardly extending protrusion is located intermediate the face wall and the annular edge at the container open end. A partition plate is supported on the protrusion to thereby provide a first capacitor enclosure bounded by the face wall, the surrounding sidewall and the partition plate. A cover plate is secured to the annular edge to close the open end of the container and provide a second capacitor enclosure bounded by the partition plate, the surrounding sidewall and the cover plate. An anode, for example of tantalum, and a cathode active material, for example of ruthenium oxide, reside in capacitive association with each other inside each of the first and second capacitor enclosures. A working electrolyte is also contained in the capacitor enclosures. Finally, leads extend from each anode through insulative seals structures supported by the casing for making electrical connection to the capacitor.
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公开(公告)号：US09721730B1
公开(公告)日：2017-08-01
申请号：US15449111
申请日：2017-03-03
Applicant: Greatbatch Ltd.
Inventor： Barry C. Muffoletto , Anthony C. Perez
CPC classification number: H01G9/008 , A61N1/378 , H01G9/02 , H01G9/035 , H01G9/042 , H01G9/0425 , H01G9/052 , H01G9/06 , H01G9/08 , H01G9/10 , H01G9/14 , H01G9/145 , H01G9/26
Abstract: A capacitor is described. The capacitor comprises a first casing member having a first face wall extending to a first surrounding sidewall in turn extending to a first annular edge defining a first open end. A second casing member has a second face wall extending to a second surrounding sidewall in turn extending to a second annular edge defining a second open end. The second casing member is supported on the first annular edge to thereby close the first open end of the first casing member and provide a first capacitor enclosure comprising the first and second casing members in a stacked relationship. A cover is secured to the second annular edge to close the second casing member and provide a second capacitor enclosure. An anode, for example of tantalum, and a cathode active material, for example of ruthenium oxide, reside in capacitive association with each other inside each of the first and second capacitor enclosures. A working electrolyte is also contained in the capacitor enclosures. Finally, leads extend from each anode through insulative seals structures supported by the casing members for making electrical connection to the capacitor.
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9.发明授权公开(公告)号：US11462363B2
公开(公告)日：2022-10-04
申请号：US17560540
申请日：2021-12-23
Applicant: Greatbatch Ltd.
Inventor： Anthony C. Perez , Christina Scheuer
Abstract: A capacitor having an anode of a pressed powder pellet is described. The pressed powder anode pellet has a contoured trough that extends inwardly into the height of the pellet from a peripheral edge of the pellet. A shaped anode wire has an embedded portion residing inside the pellet and an outwardly extending portion that is connected to the terminal pin of a feedthrough. The feedthrough is nested in the contoured trough. In order to prevent a crack from rendering the anode inoperable, the embedded portion of the anode wire is shaped to bridge the lateral extent of the contoured trough. Should a crack develop in the anode, the crack will intersect the embedded portion of the anode wire. As an embedded bridging wire structure, the crack in the anode pellet will not cause the shaped anode wire to break. Instead, the shaped anode wire provides electrical continuity from one side of the crack to the other so that the capacitor remains functional.
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公开(公告)号：US11195665B2
公开(公告)日：2021-12-07
申请号：US16291061
申请日：2019-03-04
Applicant: Greatbatch Ltd.
Inventor： Anthony C. Perez , Kenneth B. Talamine , Jason T. Hahl
Abstract: A nickel termination-pad that has been clad-bonded to a titanium base layer electrically contacted to a casing to thereby serve as a surface for a device manufacturer to connect electronic circuit to the capacitor is described. The clad connection of the nickel termination-pad to the titanium base layer is both robust and provides good electrical conductivity between the dissimilar metals.
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