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For the Inventor, By the Inventor

Tokyo, Japan

Hirofumi Inoue

This inventor holds 33 USPTO granted patents and 14 published patent applications and 8 EPO patents, primarily in Lithium-Ion Battery Technology. Top assignees: Nec Corporation, Showa Denko K.k., Group14 Technologies, Inc.. Active years: 1999-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Inoue. Retrieved from https://idiyas.com/inventor/hirofumi-inoue-bg2a87wn

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

USPTO Granted Patents = 33 

% Patents Active = 84.8

 

Average Co-Inventor Count = 3.5

ph-index = 3

Forward Citations = 40(Granted Patents)


Location History:

  • Minato-ku, JP (2013)
  • Kawasaki, JP (1999 - 2022)
  • Tokyo, JP (2014 - 2024)

Company Filing History:

goldMedal10 out of 36,718 
 
Nec Corporation
 patents
silverMedal7 out of 1,961 
 
Showa Denko K.k.
 patents
bronzeMedal4 out of 52 
 
Group14 Technologies, Inc.
 patents
4. 4 out of 16,618 
 
Mitsubishi Electric Corporation
 patents
5. 3 out of 402 
 
Resonac Corporation
 patents
6. 2 out of 62 
 
Ems-Chemie Ag
 patents
7. 2 out of 51 
 
Shinwa Controls Co., Ltd
 patents
8. 1 out of 196 
 
Nec C Orporation
 patents

Years Active: 1999-2026

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Areas of Expertise:
Power Conversion Device
Lithium-Ion Battery
Lifetime Prediction
Negative Electrode Material
Composite Particles
Discharge Capacity
Control Apparatus
Fluid Leakage Diagnosis
Refrigeration Apparatus
Sound Source Detection
Electrostatic Discharge Protector
Thermosetting Resin Composition
33 patents (USPTO):Explore Patents
1. 12770864 - Composite particles, negative electrode mixture layer and lithium-ion secondary battery (2026-10-20),
2. 12712432 - POWER CONVERSION DEVICE (2026-08-18),
3. 12540978 - Lithium ion battery lifetime prediction method, discharge capacity retention rate prediction method, lifetime prediction program, discharge capacity retention rate prediction program, and information processing device (2026-02-03),
4. 12494479 - Composite particles, negative electrode material, and lithium-ion secondary battery (2025-12-09),
5. 12340577 - Prediction method (2025-06-24),
6. 12309982 - Power conversion device (2025-05-20),
7. 12273026 - Step-down converter including a step-down transformer and a resin molded body (2025-04-08),
8. 12155065 - Negative electrode material for lithium-ion secondary battery and use thereof (2024-11-26),
9. 12148919 - Composite carbon particles and use thereof (2024-11-19),
10. 12142764 - Positive electrode mixture layer, conductive additive, positive electrode mixture, and lithium-ion secondary battery (2024-11-12),
11. 12002958 - Composite particles, negative electrode active material, and lithium-ion secondary battery (2024-06-04),
12. 11983967 - Control apparatus, control method, and non-transitory storage medium (2024-05-14),
13. 11847592 - Required time prediction apparatus, control method, and non-transitory storage medium (2023-12-19),
14. 11837966 - Power conversion device (2023-12-05),
15. 11703189 - Fluid leakage diagnosing device, fluid leakage diagnosing system, fluid leakage diagnosing method, and recording medium storing fluid leakage diagnosing program (2023-07-18),

Title: Unveiling the Innovative Work of Inventor Hirofumi Inoue

Introduction: Hirofumi Inoue, a distinguished inventor based in Tokyo, Japan, has made significant contributions to the field of materials science with a total of 23 patents to his name.

Latest Patents: Among his latest inventions is a groundbreaking composite particles technology that enhances the performance of lithium-ion secondary batteries. These composite particles contain silicon and carbon, with specific volume distribution characteristics and density values to optimize battery efficiency. Additionally, Inoue's work on a control apparatus and method demonstrates his versatility across different technological domains.

Career Highlights: Over the course of his career, Hirofumi Inoue has been associated with renowned companies such as NEC Corporation and Showa Denko K.K. His expertise in materials science and control systems has led to the development of cutting-edge technologies that have practical implications in various industries.

Collaborations: Inoue's collaborative spirit is evident through his work with colleagues like Shin Tominaga and Junichiro Mataga. Together, they have synergized their expertise to drive innovation and push the boundaries of technological advancements.

Conclusion: Hirofumi Inoue's passion for innovation, coupled with his technical acumen, has established him as a key figure in the world of patents and inventions. His continued dedication to exploring new frontiers in materials science and control systems reaffirms his status as a visionary inventor shaping the future of 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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