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For the Inventor, By the Inventor

Hyogo, Japan

Hiroichi Ishida

This inventor holds 9 USPTO granted patents. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1992-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroichi Ishida. Retrieved from https://idiyas.com/inventor/hiroichi-ishida

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

Calculating rank
USPTO Granted Patents = 9

% Patents Active = 77.8

Average Co-Inventor Count = 2.3

ph-index = 4

Forward Citations = 73(Granted Patents)


Location History:

  • Amagasaki, JP (1992 - 1994)
  • Tokyo, JP (2003)
  • Hyogo, JP (1995 - 2005)

Company Filing History:

goldMedal9 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents

Years Active: 1992-2005

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9 patents (USPTO):Explore Patents
1. 6844105 - Plate shaped battery pack and portable radio terminal (2005-01-18),
2. 6805992 - Battery and portable device (2004-10-19),
3. 6630815 - Battery protective circuit with current-amount control circuit (2003-10-07),
4. 6531246 - Plate-shaped battery and battery apparatus (2003-03-11),
5. 6462515 - Cell protective circuit (2002-10-08),
6. 5389925 - A/D and D/A conversion device with shared parameter generators (1995-02-14),
7. 5317529 - Digital filter using intermediate holding registers and common (1994-05-31),
8. 5191547 - Decimating digital finite impulse response filter (1993-03-02),
9. 5086441 - Frequency divider circuit (1992-02-04),

Title: Hiroichi Ishida: Battery and Portable Device Innovations.

Introduction

Hiroichi Ishida is an inventor associated with Hyogo, Japan, and Mitsubishi Denki Kabushiki Kaisha, also known as Mitsubishi Electric Corporation. His work includes battery structures and portable-device technologies. The supplied information credits him with 9 patents.

Latest Patents

One of Ishida’s listed patents, “Plate Shaped Battery Pack and Portable Radio Terminal,” describes a battery pack with a power-generating element sealed in a laminated-film wrapper. Its design includes an exterior member that supports or accommodates the battery terminals and may electrically connect to one of them. The patent also describes a version with a temperature detector connected to a heat-transfer member.

Another listed patent, “Battery and Portable Device,” concerns a battery with a cylindrical or polygonal exterior can and a safety valve designed to reduce internal pressure. The valve is formed by a relatively thin portion of the can, alongside a relatively thick portion.

Career Highlights

Ishida’s listed inventions focus on battery construction, safety, and integration with portable electronics. The described designs address terminal support, heat detection, and pressure relief.

Collaborations

The supplied information identifies Kiyoshi Hanafusa and Eiichi Teraoka as Ishida’s coworkers. It does not specify their roles in the listed patents.

Conclusion

Hiroichi Ishida’s patent record, as described here, highlights battery-pack and safety-valve innovations developed in connection with Mitsubishi Electric Corporation.

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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