FDK CORPORATION based in Tokyo, JP has been assigned the rights to these inventions. The list includes both Pending Applications and Patent Grants:

#1 | 2026-04-23

US20260112606A1

Electricity

NEGATIVE ELECTRODE FOR ZINC BATTERY, ZINC BATTERY, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE FOR ZINC BATTERY, AND NEGATIVE ELECTRODE MATERIAL FOR ZINC BATTERY

#2 | 2026-02-19

US20260051485A1

Electricity

NEGATIVE ELECTRODE FOR ZINC BATTERY, AND ZINC BATTERY

#3 | 2026-02-05

US20260038946A1

Electricity

PACKAGING MATERIAL AND BATTERY PACKAGE

#4 | 2025-12-18

US20250385352A1

Electricity

CYLINDRICAL BATTERY AND METHOD FOR PRODUCING CYLINDRICAL BATTERY

#5 | 2025-02-06

US20250046793A1

Electricity

BATTERY

#6 | 2024-09-19

US20240313333A1

Electricity

SEALING BODY FOR CYLINDRICAL STORAGE BATTERY AND CYLINDRICAL STORAGE BATTERY USING SAME

#7 | 2024-08-22

US20240283031A1

Electricity

SOLID-STATE BATTERY AND SOLID-STATE BATTERY MANUFACTURING METHOD

#8 | 2024-07-18 ✅ Patent 12,322,962 granted on 2025-06-03

US20240243572A1

Electricity

Power supply system and electricity storage device

#9 | 2024-07-04 ✅ Patent 12,552,288 granted on 2026-02-17

US20240217393A1

Performing operations; transporting

BATTERY VOLTAGE EQUALIZATION DEVICE

#10 | 2024-04-18 ✅ Patent 12,374,884 granted on 2025-07-29

US20240128747A1

Electricity

BACKUP POWER SUPPLY DEVICE

#11 | 2023-11-16

US20230369688A1

Electricity

SOLID-STATE BATTERY AND SOLID-STATE BATTERY MANUFACTURING METHOD

#12 | 2023-10-26 ✅ Patent 12,482,808 granted on 2025-11-25

US20230343927A1

Electricity

NICKEL ELECTRODE FOR ALKALINE SECONDARY BATTERY AND ALKALINE SECONDARY BATTERY INCLUDING NICKEL ELECTRODE

#13 | 2023-09-28 ✅ Patent 12,272,989 granted on 2025-04-08

US20230307943A1

Electricity

Backup power supply apparatus and backup power supply apparatus controlling method

#14 | 2023-09-28

US20230307715A1

Electricity

SOLID-STATE BATTERY, SOLID-STATE BATTERY MANUFACTURING METHOD, AND SOLID-STATE BATTERY MONITORING METHOD

#15 | 2023-07-27 ✅ Patent 11,996,730 granted on 2024-05-28

US20230238824A1

Electricity

Backup power supply device

#16 | 2023-07-06

US20230216048A1

Electricity

PRODUCTION METHOD OF LITHIUM COBALT PYROPHOSPHATE, AND PRODUCTION METHOD OF SOLID-STATE BATTERY

#17 | 2023-05-25 ✅ Patent 11,955,834 granted on 2024-04-09

US20230163624A1

Electricity

Backup power supply device and method for charging and discharging the same

#18 | 2023-05-11 ✅ Patent 12,567,755 granted on 2026-03-03

US20230141602A1

Electricity

BATTERY BANK UNIT, REMAINING CHARGE TIME CALCULATION METHOD, AND REMAINING CHARGE TIME CALCULATION PROGRAM

#19 | 2023-05-04

US20230137964A1

Electricity

NON-AQUEOUS ELECTROLYTE BATTERY

#20 | 2023-05-04 ✅ Patent 12,580,410 granted on 2026-03-17

US20230133960A1

Electricity

CHARGING METHOD AND BACKUP POWER SUPPLY DEVICE

#21 | 2023-04-20 ✅ Patent 12,381,262 granted on 2025-08-05

US20230118823A1

Electricity

BATTERY PACK

#22 | 2023-04-20 ✅ Patent 12,580,236 granted on 2026-03-17

US20230118126A1

Electricity

BATTERY PACK, CHARGING SYSTEM, AND METHOD FOR CHARGING BATTERY PACK

#23 | 2023-04-13 ✅ Patent 12,627,014 granted on 2026-05-12

US20230112329A1

Electricity

ALKALINE STORAGE BATTERY

#24 | 2023-03-16 ✅ Patent 12,549,021 granted on 2026-02-10

US20230083009A1

Electricity

BATTERY VOLTAGE EQUALIZATION DEVICE

#25 | 2022-12-01 ✅ Patent 12,482,820 granted on 2025-11-25

US20220384808A1

Electricity

NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERY AND ALKALINE STORAGE BATTERY INCLUDING THE NEGATIVE ELECTRODE

#26 | 2022-12-01 ✅ Patent 12,300,809 granted on 2025-05-13

US20220384786A1

Electricity

Nickel metal hydride secondary battery

#27 | 2022-11-10 ✅ Patent 11,811,069 granted on 2023-11-07

US20220359884A1

Electricity

Catalyst for air electrode, air electrode including catalyst for air electrode, and air secondary battery including air electrode

#28 | 2022-10-27

US20220344633A1

Electricity

METHOD OF MANUFACTURING SOLID-STATE BATTERY AND SOLID-STATE BATTERY

#29 | 2022-09-15 ✅ Patent 12,183,894 granted on 2024-12-31

US20220294025A1

Electricity

Electrode for alkaline secondary battery and alkaline secondary battery

#30 | 2022-08-25 ✅ Patent 12,191,526 granted on 2025-01-07

US20220271401A1

Electricity

Battery and manufacturing method thereof

#31 | 2022-08-18 ✅ Patent 11,932,466 granted on 2024-03-19

US20220258910A1

Performing operations; transporting

Battery packaging container

#32 | 2022-07-21 ✅ Patent 12,424,685 granted on 2025-09-23

US20220231358A1

Electricity

LAMINATE-TYPE POWER STORAGE ELEMENT

#33 | 2022-04-21 ✅ Patent 12,401,067 granted on 2025-08-26

US20220123374A1

Electricity

ALKALINE SECONDARY BATTERY

#34 | 2022-03-03 ✅ Patent 11,817,573 granted on 2023-11-14

US20220069285A1

Electricity

Hydrogen absorbing alloy, negative electrode comprising same and nickel-metal hydride secondary battery comprising same

#35 | 2022-02-17 ✅ Patent 11,777,333 granted on 2023-10-03

US20220052543A1

Electricity

Backup power storage system with removable secondary battery, and method of operating same

#36 | 2022-02-17 ✅ Patent 12,021,223 granted on 2024-06-25

US20220052318A1

Electricity

Positive electrode for alkali secondary battery and alkali secondary battery including said positive electrode

#37 | 2022-02-17 ✅ Patent 12,021,222 granted on 2024-06-25

US20220052317A1

Electricity

Positive electrode for alkali secondary battery, and alkali secondary battery including said positive electrode

#38 | 2022-01-27 ✅ Patent 11,742,685 granted on 2023-08-29

US20220029445A1

Electricity

Charger and charging method

#39 | 2022-01-20 ✅ Patent 12,119,698 granted on 2024-10-15

US20220021231A1

Electricity

Control unit, battery pack, and power supply device

#40 | 2021-12-09 ✅ Patent 11,901,761 granted on 2024-02-13

US20210384755A1

Electricity

Charging device

#41 | 2021-12-02 ✅ Patent 11,936,223 granted on 2024-03-19

US20210376617A1

Electricity

Battery polarity determination circuit, charger, and electronic device

#42 | 2021-11-04 ✅ Patent 12,244,027 granted on 2025-03-04

US20210344069A1

Electricity

Sealing gasket and tubular battery incorporating sealing gasket

#43 | 2021-10-28 ✅ Patent 11,888,163 granted on 2024-01-30

US20210336267A1

Electricity

Alkaline battery

#44 | 2021-08-19 ✅ Patent 11,876,186 granted on 2024-01-16

US20210257674A1

Electricity

Alkaline storage battery and method for manufacturing the alkaline storage battery

#45 | 2021-04-22 ✅ Patent 11,038,429 granted on 2021-06-15

US20210119543A1

Electricity

Insulation-type switching power supply

#46 | 2021-04-08 ✅ Patent 12,218,340 granted on 2025-02-04

US20210104734A1

Electricity

Alkaline battery and method of producing negative electrode gel for alkaline battery

#47 | 2021-03-25 ✅ Patent 11,387,496 granted on 2022-07-12

US20210091415A1

Electricity

Method of making alkaline battery with gap between pellets

#48 | 2021-02-11 ✅ Patent 11,322,751 granted on 2022-05-03

US20210043945A1

Electricity

Method for producing catalyst for air secondary battery, method for producing air secondary battery, catalyst for air secondary battery, and air secondary battery

#49 | 2021-02-04 ✅ Patent 11,387,660 granted on 2022-07-12

US20210036530A1

Electricity

Automatic charger

#50 | 2021-01-28 ✅ Patent 11,228,186 granted on 2022-01-18

US20210028633A1

Electricity

Charger having failure detection function and failure detection method

#51 | 2021-01-14 ✅ Patent 11,509,012 granted on 2022-11-22

US20210013462A1

Electricity

Thin-type battery

#52 | 2021-01-07 ✅ Patent 11,404,691 granted on 2022-08-02

US20210005890A1

Electricity

Method of manufacturing battery electrode material

#53 | 2020-12-03 ✅ Patent 12,132,165 granted on 2024-10-29

US20200381775A1

Electricity

All-solid-state battery

#54 | 2020-11-19 ✅ Patent 12,573,693 granted on 2026-03-10

US20200365857A1

Electricity

SEALING BODY AND BATTERY

#55 | 2020-11-12 ✅ Patent 11,183,920 granted on 2021-11-23

US20200358366A1

Electricity

Switching power supply with delay for dead time adjustment

#56 | 2020-11-05 ✅ Patent 11,502,367 granted on 2022-11-15

US20200350526A1

Electricity

Battery case

#57 | 2020-10-29 ✅ Patent 11,196,341 granted on 2021-12-07

US20200343814A1

Electricity

Switching power supply with controlled switching frequency variation range

#58 | 2020-10-01 ✅ Patent 11,355,753 granted on 2022-06-07

US20200313179A1

Electricity

Negative electrode for nickel metal hydride secondary battery, method of manufacturing the negative electrode, and nickel metal hydride secondary battery using the negative electrode

#59 | 2020-10-01 ✅ Patent 11,742,545 granted on 2023-08-29

US20200313125A1

Electricity

Battery module

#60 | 2020-09-24

US20200303690A1

Electricity

LABEL FOR BATTERY AND METHOD OF MANUFACTURING LABEL FOR BATTERY

#61 | 2020-08-20 ✅ Patent 11,038,238 granted on 2021-06-15

US20200266404A1

Electricity

Alkaline secondary battery

#62 | 2020-08-06 ✅ Patent 11,495,804 granted on 2022-11-08

US20200251746A1

Electricity

Air electrode catalyst for air secondary battery and air secondary battery

#63 | 2020-05-21 ✅ Patent 11,228,027 granted on 2022-01-18

US20200161646A1

Electricity

Positive electrode active material for alkaline secondary battery and alkaline secondary battery including the positive electrode active material

#64 | 2020-05-07 ✅ Patent 11,355,751 granted on 2022-06-07

US20200144616A1

Electricity

Air electrode for air secondary battery and air secondary battery

#65 | 2020-03-26 ✅ Patent 10,892,463 granted on 2021-01-12

US20200099036A1

Electricity

Secondary battery and method of manufacturing the same

#66 | 2020-01-30 ✅ Patent 11,228,198 granted on 2022-01-18

US20200036211A1

Electricity

Charging device

#67 | 2019-12-12 ✅ Patent 11,296,388 granted on 2022-04-05

US20190379019A1

Electricity

Secondary battery

#68 | 2019-12-05 ✅ Patent 11,817,735 granted on 2023-11-14

US20190372383A1

Electricity

Charging device that can optimize charging current of a secondary battery

#69 | 2019-11-07 ✅ Patent 10,797,595 granted on 2020-10-06

US20190341848A1

Electricity

Power supply and control method for power supply

#70 | 2019-10-17 ✅ Patent 11,043,664 granted on 2021-06-22

US20190319260A1

Electricity

Negative electrode for alkaline secondary battery, and alkaline secondary battery

#71 | 2019-10-03 ✅ Patent 11,038,161 granted on 2021-06-15

US20190305301A1

Electricity

Negative electrode for nickel-hydrogen secondary battery, and nickel-hydrogen secondary battery

#72 | 2019-09-26 ✅ Patent 11,594,740 granted on 2023-02-28

US20190296278A1

Electricity

Sealing gasket for cylindrical alkaline battery and cylindrical alkaline battery

#73 | 2019-08-08 ✅ Patent 11,095,006 granted on 2021-08-17

US20190245187A1

Electricity

Battery receiving terminal structure

#74 | 2019-07-18 ✅ Patent 10,523,030 granted on 2019-12-31

US20190222030A1

Electricity

Charge control method for alkaline storage battery and charger for alkaline storage battery

#75 | 2019-07-18 ✅ Patent 10,658,777 granted on 2020-05-19

US20190221954A1

Electricity

Externally-attached PTC element and tubular battery

#76 | 2019-07-11 ✅ Patent 11,258,130 granted on 2022-02-22

US20190214614A1

Electricity

Battery spacer

#77 | 2019-06-27 ✅ Patent 10,693,362 granted on 2020-06-23

US20190199197A1

Electricity

Switching power supply

#78 | 2019-06-20 ✅ Patent 10,739,387 granted on 2020-08-11

US20190187188A1

Physics

Current detector for bidirectional switching power supply

#79 | 2019-05-16

US20190148057A1

Electricity

INDUCTOR

#80 | 2019-05-16

US20190148049A1

Electricity

INDUCTOR AND MOUNTING STRUCTURE THEREOF

#81 | 2019-05-16 ✅ Patent 10,414,589 granted on 2019-09-17

US20190144207A1

Performing operations; transporting

Battery aligning device

#82 | 2019-01-03 ✅ Patent 10,951,048 granted on 2021-03-16

US20190006856A1

Electricity

Charging circuit

#83 | 2018-12-27

US20180375145A1

Electricity

ELECTRODE PLATE AND BATTERY

#84 | 2018-12-06

US20180350507A1

Electricity

LAMINATED TRANSFORMER AND METHOD FOR MANUFACTURING LAMINATED TRANSFORMER

#85 | 2018-11-22 ✅ Patent 10,923,698 granted on 2021-02-16

US20180337382A1

Electricity

Laminate-type power storage element

#86 | 2018-10-18 ✅ Patent 10,790,507 granted on 2020-09-29

US20180301701A1

Electricity

Method for preparing cathode material for lithium primary battery, cathode material for lithium primary battery, and lithium primary battery

#87 | 2018-10-04 ✅ Patent 10,658,667 granted on 2020-05-19

US20180287159A1

Electricity

Conductive auxiliary agent, electrode material for battery, and method for manufacturing electrode material for battery

#88 | 2018-10-04 ✅ Patent 10,535,848 granted on 2020-01-14

US20180287107A1

Electricity

Battery spacer

#89 | 2018-10-04 ✅ Patent 10,950,829 granted on 2021-03-16

US20180287104A1

Electricity

Sealing body of cylindrical battery, and cylindrical battery

#90 | 2018-08-09 ✅ Patent 10,741,880 granted on 2020-08-11

US20180226688A1

Electricity

Laminated rechargeable element

#91 | 2018-08-09 ✅ Patent 10,490,801 granted on 2019-11-26

US20180226628A1

Electricity

Battery pack protection element attachment tab, battery pack parallel fixing component, and battery pack

#92 | 2018-08-02 ✅ Patent 10,714,732 granted on 2020-07-14

US20180219206A1

Electricity

Current collecting lead and production method for secondary battery including current collecting lead

#93 | 2018-07-19 ✅ Patent 10,629,858 granted on 2020-04-21

US20180205044A1

Electricity

Sealing body of tube-shaped battery and tube-shaped battery

#94 | 2018-06-21

US20180175453A1

Electricity

ELECTRODE PLATE OF LAMINATED POWER STORAGE ELEMENT, LAMINATED POWER STORAGE ELEMENT, AND METHOD FOR MANUFACTURING ELECTRODE PLATE FOR LAMINATED POWER STORAGE ELEMENT

#95 | 2018-06-14 ✅ Patent 10,797,419 granted on 2020-10-06