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For the Inventor, By the Inventor

Tsuna-gun, Japan

Tooru Amazutsumi

This inventor holds 6 USPTO granted patents. Top assignee: Sanyo Electric Co., Ltd.. Active years: 1989-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tooru Amazutsumi. Retrieved from https://idiyas.com/inventor/tooru-amazutsumi

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

Calculating rank
USPTO Granted Patents = 6

% Patents Active = 83.3

Average Co-Inventor Count = 4.1

ph-index = 5

Forward Citations = 73(Granted Patents)


Location History:

  • Tsunagun, JP (1995 - 1998)
  • Hyogo, JP (1989 - 2005)

Company Filing History:

goldMedal6 out of 8,782 
 
Sanyo Electric Co., Ltd.
 patents

Years Active: 1989-2005

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6 patents (USPTO):Explore Patents
1. 6930465 - Residual capacity correction method for battery (2005-08-16),
2. 5834133 - Laser-sealed battery (1998-11-10),
3. 5770332 - Prismatic battery (1998-06-23),
4. 5640080 - Secondary battery charger (1997-06-17),
5. 5443925 - Nonaqueous electrolyte battery (1995-08-22),
6. 4804593 - Enclosed cell having safety valve mechanism and fabricating method of (1989-02-14),

Title: Tooru Amazutsumi: Innovator in Battery Technology

Introduction

Tooru Amazutsumi is a notable inventor based in Tsuna-gun, Japan. He has made significant contributions to the field of battery technology, holding a total of 6 patents. His innovative approaches have led to advancements that enhance battery performance and reliability.

Latest Patents

Amazutsumi's latest patents include a residual capacity correction method for batteries and a laser-sealed battery design. The residual capacity correction method involves counting cycles each time the accumulated charge capacity reaches a learning capacity. This method decreases the learning capacity based on specified degradation capacities, utilizing parameters such as keeping temperature and residual capacity. The laser-sealed battery features an electrode roll with a positive and negative electrode, sealed with a laser-welded plate. This design ensures reliable electrical connections while simplifying the fabrication process.

Career Highlights

Tooru Amazutsumi is currently employed at Sanyo Electric Co., Ltd., where he continues to innovate in battery technology. His work has been instrumental in developing more efficient and reliable battery systems.

Collaborations

Amazutsumi has collaborated with notable coworkers, including Satoshi Narukawa and Yasuhiro Yamauchi. Their combined expertise has contributed to the success of various projects within the company.

Conclusion

Tooru Amazutsumi's contributions to battery technology exemplify the spirit of innovation. His patents reflect a commitment to improving energy storage solutions, making a lasting impact in the field.

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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