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公开(公告)号：US10947376B2
公开(公告)日：2021-03-16
申请号：US16411915
申请日：2019-05-14
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko , Yaru Shi , Qingping Chen , Philip M. Lessner
IPC: C08L25/18 , C07C309/30 , H01G9/042 , H01M4/137 , H01G9/00 , H01G9/028 , C07C309/28 , H01G9/04 , H01G9/15 , H01M4/136
Abstract: A capacitor and a method of making a capacitor, is provided with improved reliability performance. The capacitor comprises an anode; a dielectric on the anode; and a cathode on the dielectric wherein the cathode comprises a conductive polymer and a polyanion wherein the polyanion is a copolymer comprising groups A, B and C represented by Formula AxByCz as described herein.
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公开(公告)号：US20210005396A1
公开(公告)日：2021-01-07
申请号：US17023870
申请日：2020-09-17
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko , Qingping Chen , Yaru Shi , Philip M. Lessner
IPC: H01G9/00 , H01G9/042 , C09D5/24 , C09D165/00 , C09D4/06 , C09D125/18 , C09D7/65 , H01G9/15 , H01G9/025 , C08F12/30 , H01B1/12 , C08F212/14 , C09D133/14 , H01G9/028
Abstract: An improved capacitor is provided wherein the capacitor comprising an anode foil; and a conductive polymer layer on the anode foil. The conductive polymer layer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and the polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns. The second particles have an average particle diameter of at least 1 nm to no more than 600 nm.
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13.发明申请公开(公告)号：US20170338047A1
公开(公告)日：2017-11-23
申请号：US15595137
申请日：2017-05-15
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko , Yaru Shi , Qingping Chen , Philip M. Lessner
CPC classification number: H01G9/042 , H01G9/0036 , H01G9/04 , H01G9/15 , H01G2009/0014 , H01G2009/0404 , H01M4/136 , H01M4/137
Abstract: A capacitor and a method of making a capacitor, is provided with improved reliability performance. The capacitor comprises an anode; a dielectric on the anode; and a cathode on the dielectric wherein the cathode comprises a conductive polymer and a polyanion wherein the polyanion is a copolymer comprising groups A, B and C represented by Formula AxByCz as described herein.
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公开(公告)号：US12205775B2
公开(公告)日：2025-01-21
申请号：US17708196
申请日：2022-03-30
Applicant: KEMET Electronics Corporation
Inventor： Yaru Shi , Antony P. Chacko , Ajaykumar Bunha
Abstract: Provided herein is a method for forming a capacitor and an improved capacitor formed by the method. The method comprises providing an anode with an anode lead extending therefrom. A dielectric is formed on the anode thereby forming an anodized anode. A cathode layer is formed over the dielectric wherein the cathode layer is formed by applying a conductive polymer solution or dispersion and applying a primer solution or dispersion comprising a monophosphonium or monosulfonium cation.
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公开(公告)号：US20220223351A1
公开(公告)日：2022-07-14
申请号：US17708196
申请日：2022-03-30
Applicant: KEMET Electronics Corporation
Inventor： Yaru Shi , Antony P. Chacko , Ajaykumar Bunha
Abstract: Provided herein is a method for forming a capacitor and an improved capacitor formed by the method. The method comprises providing an anode with an anode lead extending therefrom. A dielectric is formed on the anode thereby forming an anodized anode. A cathode layer is formed over the dielectric wherein the cathode layer is formed by applying a conductive polymer solution or dispersion and applying a primer solution or dispersion comprising a monophosphonium or monosulfonium cation.
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Patent Agency Ranking
公开(公告)号：US10658121B2
公开(公告)日：2020-05-19
申请号：US15787126
申请日：2017-10-18
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko , Qingping Chen , Yaru Shi , Philip M. Lessner
IPC: H01G9/00 , H01G9/042 , C09D5/24 , C09D165/00 , C09D4/06 , C09D125/18 , C09D7/65 , H01G9/15 , H01G9/025
Abstract: A capacitor and process for forming the capacitor, is provided wherein the capacitor comprises a conductive polymer layer. The conductive polymer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and said polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns and the second particles have an average particle diameter of at least 1 nm to no more than 600 nm.
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17.发明申请公开(公告)号：US20200152393A1
公开(公告)日：2020-05-14
申请号：US16741105
申请日：2020-01-13
Applicant: KEMET Electronics Corporation
Inventor： Yaru Shi , Antony P. Chacko , Ajaykumar Bunha , Qingping Chen , Elisabeth Crittendon Key
Abstract: Provided is an improved capacitor formed by a process comprising: providing an anode comprising a dielectric thereon wherein the anode comprises a sintered powder wherein the powder has a powder charge of at least 45,000 μFV/g; and forming a first conductive polymer layer encasing at least a portion of the dielectric by applying a first slurry wherein the first slurry comprises a polyanion and a conductive polymer and wherein the polyanion and conductive polymer are in a weight ratio of greater than 3 wherein the conductive polymer and polyanion forms conductive particles with an average particle size of no more than 20 nm.
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公开(公告)号：US20190311857A1
公开(公告)日：2019-10-10
申请号：US16435762
申请日：2019-06-10
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko , Yaru Shi , Qingping Chen , Philip M. Lessner
IPC: H01G9/00 , H01G9/042 , C09D125/18 , C09D5/24 , C09D4/06 , C09D165/00 , C08F212/14 , C08F12/30 , C09D133/14 , C09D7/65 , H01G9/15 , H01G9/025
Abstract: An improved capacitor is provided wherein the capacitor comprises a conductive polymer layer. The conductive polymer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and said polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns and the second particles have an average particle diameter of at least 1 nm to no more than 600 nm.
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19.发明申请公开(公告)号：US20190267194A1
公开(公告)日：2019-08-29
申请号：US16411915
申请日：2019-05-14
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko , Yaru Shi , Qingping Chen , Philip M. Lessner
Abstract: A capacitor and a method of making a capacitor, is provided with improved reliability performance. The capacitor comprises an anode; a dielectric on the anode; and a cathode on the dielectric wherein the cathode comprises a conductive polymer and a polyanion wherein the polyanion is a copolymer comprising groups A, B and C represented by Formula AxByCz as described herein.
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公开(公告)号：US20220293349A1
公开(公告)日：2022-09-15
申请号：US17831138
申请日：2022-06-02
Applicant: KEMET Electronics Corporation
Inventor： Ajaykumar Bunha , Antony P. Chacko
Abstract: The present invention if related to an improved electrolytic capacitor and a method of making the improved electrolytic capacitor. The electrolytic capacitor comprises an anode comprising a dielectric layer on the anode. A first mordant layer is on the dielectric wherein the first mordant layer comprises a mordant compound of Formula A: wherein: R1 and R2 is independently selected from H; cation, linear alkyl, cyclic alkyl or substituted alkyl of 1 to 10 carbons; R3 is selected from —CR4R5R6 wherein R4 represents a hydrogen, an alkyl of 1-20 carbons or an aryl of 6-20 carbons; R4 and R5 can be taken together to represent a cyclic alkyl or substituted cyclic alkyl or (—CR6OP(O)OR1OR2)n; R5 represents an alkyl of 1-20 carbons or an aryl of 6-20 carbons; R4 and R5 can be taken together to represent a cyclic alkyl or substituted cyclic alkyl or (—CR6OP(O)OR1OR2)n; R6 represents a hydrogen, an alkyl of 1-20 carbons or an aryl of 6-20 carbons; and n is an integer from 1 to 20; and a crosslinker. A primary conductive polymer layer is on the first mordant layer.
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