Ibaraki, Japan

Wataru Shimotsuma

This inventor holds 24 USPTO granted patents, primarily in Magnetic Fluids. Top assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Electrical Industrial Co., Ltd.. Active years: 1976-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Wataru Shimotsuma. Retrieved from https://idiyas.com/inventor/wataru-shimotsuma

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 10

Forward Citations = 243(Granted Patents)


Location History:

  • Hirakata, JA (1976)
  • Hirakata, JP (1979)
  • Kadoma, JP (1981)
  • JP (1981)
  • Ibaragi, JP (1985)
  • Osaka, JP (1986)
  • Ibaraki, JP (1981 - 1988)

Company Filing History:


Years Active: 1976-1988

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Areas of Expertise:
Magnetic Fluid
Recording Media
Temperature Sensitive Polymers
Anion-Doped Polymers
Electrographic Recording
Conductive Devices
Thermo-Sensitive Material
Magneto-Fluidic Recording
Electrosensitive Sheets
Tetracyanoanthraquinodimethane
Image Recording Apparatus
Conductive Tin Dioxide
24 patents (USPTO):Explore Patents

Title: Wataru Shimotsuma: Innovator in Magnetic Fluids and Recording Media

Introduction

Wataru Shimotsuma, located in Ibaraki, Japan, is an accomplished inventor with a portfolio of 24 patents. His innovations, particularly in the field of magnetic fluids and recording mediums, have significant implications for various industries, including printing and electronics.

Latest Patents

Wataru Shimotsuma's latest patents showcase his expertise and creativity. One of his notable inventions is a magnetic fluid that incorporates an organic compound as a dispersion medium. This innovative magnetic fluid maintains a rich hue while exhibiting stable properties over time. By mixing a colorant, prepared through treatment with solubilizing agents, into a magnetic dispersion, his invention allows for the hue to be altered without affecting the magnetic properties, making it particularly effective for applications in developers and inks for printing and recording.

Additionally, he has developed a recording medium that utilizes conductive polymers and an advanced recording method. This recording medium consists of a substrate with a conductive polymer layer containing a dopant. The method allows for selective changes to the dopant, enhancing the recording characteristics and environmental stability across various electronic devices and storage solutions.

Career Highlights

Throughout his career, Wataru Shimotsuma has contributed significantly to technological advancements while working at prestigious companies such as Matsushita Electric Industrial Co., Ltd. and Matsushita Electrical Industrial Co., Ltd. His work has focused on enhancing the functionality and applications of materials in various fields.

Collaborations

Wataru has collaborated with notable coworkers including Nobuo Sonoda and Yoshio Kishimoto. These partnerships fostered an environment of innovation, leading to the successful development of several groundbreaking technologies and patent applications.

Conclusion

Wataru Shimotsuma continues to be a leading figure in innovation, driven by his commitment to advancing technology through his inventions. His contributions, especially in magnetic fluids and conductive polymers, have set a benchmark for future developments in the industry. As he progresses in his career, it will be exciting to see how his work continues to influence and shape the field 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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