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For the Inventor, By the Inventor

Osaka, Japan

Tomokazu Sada

This inventor holds 23 USPTO granted patents and 8 published patent applications and 3 EPO patents, primarily in Battery Management Systems. Top assignees: Panasonic Intellectual Property Management Co., Ltd., Panasonic Corporation, Sanyo Electric Co., Ltd.. Active years: 2010-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomokazu Sada. Retrieved from https://idiyas.com/inventor/tomokazu-sada

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 23 

% Patents Active = 60.9

 

Average Co-Inventor Count = 3.1

ph-index = 4

Forward Citations = 325(Granted Patents)


Company Filing History:

goldMedal12 out of 13,338 
 
Panasonic Intellectual Property Management Co., Ltd.
 patents
silverMedal10 out of 16,454 
 
Panasonic Corporation
 patents
bronzeMedal1 out of 8,782 
 
Sanyo Electric Co., Ltd.
 patents

Years Active: 2010-2026

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Areas of Expertise:
Battery Management
Charge Control
Battery Diagnosis
Power Storage
Wireless Power Transmission
Data Communication
Power Generation
AC Converter
Battery Characteristic Estimation
Power Supply System
Data Transmitting Apparatus
Data Receiving Apparatus
23 patents (USPTO):Explore Patents
1. 12517184 - Information processing method, and charge control device (2026-01-06),
2. 12352821 - Calculation system, battery characteristic estimation method, and battery characteristic estimation program (2025-07-08),
3. 12153096 - Remaining capability evaluation method for secondary battery, remaining capability evaluation program for secondary battery, computation device, and remaining capability evaluation system (2024-11-26),
4. 11502530 - Battery management device, battery system, and vehicle power supply system for managing battery state of charge level when in non-use state (2022-11-15),
5. 11448707 - Battery management device, battery system, and battery management method for estimating transition of AC resistance value of secondary battery (2022-09-20),
6. 11355793 - Power supplying device, power storage system, and charging method (2022-06-07),
7. 11275122 - Battery diagnosis method, battery diagnosis program, battery management apparatus, and power storage system (2022-03-15),
8. 10838013 - Management apparatus and power storage system (2020-11-17),
9. 10355509 - Management apparatus, charge and discharge control apparatus, power storage system, and charge and discharge control method (2019-07-16),
10. 9887397 - Battery case and battery (2018-02-06),
11. 9077209 - Power generation system, power generating module, module fixing device and method for installing power generation system (2015-07-07),
12. 8970070 - Wireless power transmission system (2015-03-03),
13. 8952573 - Power generator and power generation system (2015-02-10),
14. 8681517 - AC converter, AC converting method, and storage medium for converting an AC voltage with a relatively high frequency into an AC voltage with a relatively low frequency (2014-03-25),
15. 8189787 - Data transmitting apparatus, data receiving apparatus and data communication apparatus (2012-05-29),

Title: Innovations by Tomokazu Sada in Battery Technology

Introduction

Tomokazu Sada is a notable inventor based in Osaka, Japan, recognized for his significant contributions to battery technology. With a total of 21 patents, Sada has been at the forefront of innovations aimed at improving secondary batteries, particularly in evaluating their remaining capabilities and optimizing their management systems.

Latest Patents

Sada's latest patents include groundbreaking methods and devices such as the "Remaining Capability Evaluation Method for Secondary Battery" and the "Remaining Capability Evaluation Program for Secondary Battery." These inventions focus on assessing the deterioration of secondary batteries, enabling accurate diagnostics based on actual measurements. His innovation includes a deterioration diagnosis unit that can analyze the degree of battery deterioration after its primary use and update the deterioration speed accordingly.

Additionally, he developed a "Battery Management Device" and a "Vehicle Power Supply System" that manage the state of charge level of batteries during non-use periods. The state estimator within these inventions utilizes parameters such as voltage, current, and temperature to monitor the battery's state and introduce controlled discharges to mitigate storage deterioration.

Career Highlights

Throughout his career, Tomokazu Sada has been associated with prominent companies such as Panasonic Corporation and Panasonic Intellectual Property Management Co., Ltd. His work at these companies has significantly influenced battery technology, driving advancements that support sustainable energy solutions.

Collaborations

Sada has collaborated with esteemed professionals in the field, including Tsuyoshi Ikushima and Satoshi Furusawa. Their joint efforts have fostered innovative approaches to battery management and diagnostics, further enhancing the effectiveness of secondary batteries.

Conclusion

Tomokazu Sada's dedication to innovation in battery technology has led to several important patents that address critical challenges in energy management. His contributions not only enhance the performance and longevity of secondary batteries but also play a vital role in the future of energy sustainability.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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