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For the Inventor, By the Inventor

Ibaraki, Japan

Yoshiki Somatomo

This inventor holds 13 USPTO granted patents. Top assignees: Hitachi Maxell, Limited, Hitachi Maxell Energy, Ltd.. Active years: 1990-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiki Somatomo. Retrieved from https://idiyas.com/inventor/yoshiki-somatomo

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

USPTO Granted Patents = 13

% Patents Active = 53.8

Average Co-Inventor Count = 2.8

ph-index = 5

Forward Citations = 192(Granted Patents)


Location History:

  • Osaka, JP (1990 - 2003)
  • Kyoto, JP (2007 - 2010)
  • Ibaraki, JP (2009 - 2011)

Company Filing History:

goldMedal12 out of 1,112 
 
Hitachi Maxell, Limited
 patents
silverMedal1 out of 10 
 
Hitachi Maxell Energy, Ltd.
 patents

Years Active: 1990-2011

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13 patents (USPTO):Explore Patents
1. 7989100 - Sealed prismatic battery (2011-08-02),
2. 7754373 - Sealed prismatic battery (2010-07-13),
3. 7732090 - Sealed rectangular battery (2010-06-08),
4. 7666547 - Sealed prismatic battery (2010-02-23),
5. 7553581 - Sealed prismatic battery (2009-06-30),
6. 7524578 - Battery comprising a flange formed at a peripheral edge and a protection circuit attached to the flange (2009-04-28),
7. 7261971 - Battery used for small electric devices (2007-08-28),
8. D483325 - Battery (2003-12-10),
9. D481994 - Battery (2003-11-12),
10. D479193 - Battery (2003-09-03),
11. D479192 - Battery (2003-09-03),
12. 5017442 - Coiled lithium battery (1991-05-21),
13. 4971867 - Cylindrical organic electrolyte battery with a PTC device (1990-11-20),

Title: Yoshiki Somatomo: Innovator in Battery Technology

Introduction

Yoshiki Somatomo is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of battery technology, holding a total of 13 patents. His innovative designs focus on enhancing the safety and reliability of battery systems.

Latest Patents

Among his latest inventions is a sealed prismatic battery that features a laterally long cap sealing an opening on the upper surface of a battery can. This design includes a safety vent with a thin-walled valve body that opens in response to abnormal increases in internal pressure. The safety vent is characterized by an oval-shaped circumferential groove and a unique structure that ensures reliability during operation. Another notable patent involves a sealed prismatic battery with an opening vent that utilizes the deformed state of the battery casing during abnormal pressure increases. This design enhances the safety features of the battery, making it more reliable for various applications.

Career Highlights

Yoshiki Somatomo has worked with notable companies such as Hitachi Maxell, Limited and Hitachi Maxell Energy, Ltd. His experience in these organizations has allowed him to develop and refine his innovative battery technologies.

Collaborations

Throughout his career, Somatomo has collaborated with talented individuals, including Naoto Sugimune and Osamu Watanabe. These partnerships have contributed to the advancement of his inventions and the overall progress in battery technology.

Conclusion

Yoshiki Somatomo's work in battery technology exemplifies innovation and dedication to safety and reliability. His contributions continue to influence the industry and pave the way for future advancements in energy storage solutions.

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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