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For the Inventor, By the Inventor

Kawasaki, Japan

Masafumi Okumura

This inventor holds 12 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1997-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masafumi Okumura. Retrieved from https://idiyas.com/inventor/masafumi-okumura

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

Calculating rank
USPTO Granted Patents = 12

% Patents Active = 66.7

Average Co-Inventor Count = 1.9

ph-index = 8

Forward Citations = 193(Granted Patents)


Company Filing History:

goldMedal12 out of 39,381 
 
Fujitsu Corporation
 patents

Years Active: 1997-2017

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12 patents (USPTO):Explore Patents
1. 9575131 - Residual quantity display system (2017-02-21),
2. 8232770 - Battery remaining capacity predicting apparatus (2012-07-31),
3. 7693671 - Battery control device, battery control method, battery pack, electronic apparatus and control circuit for calculating charging-discharging count of battery (2010-04-06),
4. 7276881 - Protection method, control circuit, and battery unit (2007-10-02),
5. 6885168 - Battery unit having means for preventing over-discharge (2005-04-26),
6. 6498459 - Electronic equipment and battery unit (2002-12-24),
7. 6492791 - Protection method, control circuit, and battery unit (2002-12-10),
8. 6008629 - Charging-and-discharging device for an electronic apparatus, and an (1999-12-28),
9. 5872445 - Power supply device having low internal power consumption and electronic (1999-02-16),
10. 5717256 - Power supply apparatus and electronic appliance equipped with the power (1998-02-10),
11. 5625237 - Remove power source device having improved capacity indication (1997-04-29),
12. 5608304 - Battery protection circuit and battery pack and apparatus using the (1997-03-04),

Title: The Innovative Work of Masafumi Okumura in Battery Technology

Introduction:

Masafumi Okumura is a prolific inventor based in Kawasaki, Japan, known for his groundbreaking work in the field of battery technology. With a total of 12 patents to his name, Okumura has been instrumental in developing cutting-edge solutions for predicting battery remaining capacity and enhancing battery performance.

Latest Patents:

One of Okumura's latest patents is the "Residual Quantity Display System," where a microcomputer in a device body stores updates of the maximum discharge current value of a secondary battery. This innovation indicates the remaining capacity ratio of the battery concerning the discharge voltage value, enhancing the accuracy of capacity display.

Another notable patent is the "Battery Remaining Capacity Predicting Apparatus," which focuses on accurately estimating the remaining capacity of a battery based on various parameters like open-circuit voltage, charge/discharge currents, and internal impedance. This technology contributes to improving the overall efficiency and reliability of battery management systems.

Career Highlights:

Masafumi Okumura is associated with Fujitsu Corporation, a prominent technology company renowned for its contributions to the global IT sector. His tenure at Fujitsu Corporation has been marked by a series of innovative developments in battery technology, solidifying his reputation as a leading figure in the industry.

Collaborations:

Throughout his career, Okumura has collaborated closely with esteemed colleagues such as Hidekiyo Ozawa and Mituo Saeki. Together, they have worked on various projects aimed at advancing battery technology and addressing the evolving needs of the market.

Conclusion:

Masafumi Okumura's inventive spirit and dedication to excellence have positioned him as a key player in the realm of battery technology. His pioneering patents and collaborative efforts underscore his commitment to driving innovation and pushing the boundaries of what is possible in the field. As he continues to make significant contributions to the industry, the future holds great promise for Okumura's ongoing impact on the world of inventions and technology.

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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