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For the Inventor, By the Inventor

Hirakata, Japan

Hiroshi Yoshizawa

This inventor holds 78 USPTO granted patents, plus 1 CIPO patent and 7 EPO patents, primarily in Non-Aqueous Electrolyte Batteries (CPC class H01M). Top assignees: Panasonic Corporation, Matsushita Electric Industrial Co., Ltd., Osaka City University. Active years: 1984-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Yoshizawa. Retrieved from https://idiyas.com/inventor/hiroshi-yoshizawa

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

USPTO Granted Patents = 78

% Patents Active = 64.1



Average Co-Inventor Count = 3.4

ph-index = 14

Forward Citations = 629(Granted Patents)

Forward Citations (Not Self Cited) = 605(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1984)
  • Katano, JP (1992 - 1996)
  • Yokkaichi, JP (1996 - 2012)
  • Hirakata, JP (1998 - 2014)
  • Osaka, JP (2002 - 2021)
  • Hyogo, JP (2022)

Company Filing History:

goldMedal39 out of 16,454 
 
Panasonic Corporation
 patents
silverMedal31 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
bronzeMedal14 out of 57 
 
Osaka City University
 patents
4. 6 out of 394 
 
Ishihara Sangyo Kaisha, Ltd.
 patents
5. 1 out of 11 
 
Chemipro Kasei Kaisha, Limited
 patents
6. 1 out of 2,423 
 
Mitsubishi Chemical Corporation
 patents
7. 1 out of 13,338 
 
Panasonic Intellectual Property Management Co., Ltd.
 patents
8. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1984-2022

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Areas of Expertise:
Non-Aqueous Electrolyte
Electrochemical Energy Storage
Positive Electrode Material
Lithium Ion Battery
Secondary Battery
Power Storage Device
Manufacturing Method
Active Material
78 patents (USPTO):Explore Patents
1. 11450917 - Power storage device (2022-09-20),
2. 10882824 - Method for purifying trifluoromethylpyridines (2021-01-05),
3. 9391325 - Positive electrode active material, production method thereof and non-aqueous electrolyte secondary battery (2016-07-12),
4. 8673505 - Non-aqueous electrolyte secondary battery (2014-03-18),
5. 8658125 - Positive electrode active material and non-aqueous electrolyte secondary battery containing the same (2014-02-25),
6. 8530086 - Non-aqueous electrolyte secondary battery (2013-09-10),
7. 8470475 - Non-aqueous electrolyte secondary battery (2013-06-25),
8. 8440824 - Method for producing pyrimidine compound (2013-05-14),
9. 8399127 - Nonaqueous electrolyte secondary battery (2013-03-19),
10. 8349287 - Positive electrode active material and non-aqueous electrolyte secondary battery containing the same (2013-01-08),
11. 8338612 - Process for producing toluidine compound (2012-12-25),
12. 8318357 - Positive electrode active material for non-aqueous electrolyte secondary battery, positive electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery (2012-11-27),
13. 8241790 - Positive electrode active material and non-aqueous electrolyte secondary battery containing the same (2012-08-14),
14. 8221922 - Non-aqueous electrolyte secondary battery (2012-07-17),
15. 8187744 - Non-aqueous electrolyte and non-aqueous electrolyte secondary battery (2012-05-29),

Certainly! Here is the article about inventor Hiroshi Yoshizawa based on the provided data:

Title: Innovator Spotlight: Hiroshi Yoshizawa, Pioneering Inventor from Hirakata, Japan

Introduction: Hiroshi Yoshizawa is a prolific inventor hailing from Hirakata, Japan, with an impressive portfolio of 78 patents to his name. His groundbreaking work in various fields has contributed significantly to technological advancements globally.

Latest Patents:

1. Power storage device: Yoshizawa's innovative power storage device features a unique design, utilizing a cell stack body with secondary cells and buffer plates. These buffer plates, comprising deformable and non-deformable sections, allow for elastic deformation in response to volume changes in the secondary cells.

2. Method for purifying trifluoromethylpyridines: Another recent patent by Yoshizawa focuses on a method for purifying compounds using an aqueous solution of a basic compound. This method is particularly useful for treating mixtures containing specific chemical compounds, showcasing his versatility in various scientific domains.

Career Highlights: Hiroshi Yoshizawa has made significant contributions during his tenure at renowned companies such as Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His innovative spirit and dedication to research and development have paved the way for cutting-edge technological solutions in the industry.

Collaborations: Throughout his career, Yoshizawa has collaborated closely with esteemed colleagues such as Masatoshi Nagayama and Tsutomu Ohzuku. These fruitful collaborations have led to the creation of groundbreaking inventions and have fostered a culture of innovation in the workplace.

Conclusion: Hiroshi Yoshizawa stands as a testament to the power of innovation and creativity in driving technological progress. His remarkable patents and collaborations highlight his invaluable contributions to the field of invention, making him a respected figure in the industry.

If you need more information or assistance on inventors, patents, or innovations, feel free to ask!

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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