Annaka, Japan

Shinji Makikawa

This inventor holds 21 USPTO granted patents and 2 published patent applications, plus 3 CIPO patents and 3 EPO patents, primarily in Transparent Ceramics. Top assignees: Shin-Etsu Chemical Co., Ltd., Shin-Etsu Chemical C O., Ltd., Other. Active years: 1988-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shinji Makikawa. Retrieved from https://idiyas.com/inventor/shinji-makikawa

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

USPTO Granted Patents = 21 

% Patents Active = 90.5

 

 

Average Co-Inventor Count = 3.3

ph-index = 5

Forward Citations = 88(Granted Patents)


Location History:

  • Gunma, JP (1988 - 2004)
  • Takasaki, JP (2002 - 2007)
  • Annaka, JP (1991 - 2021)

Company Filing History:


Years Active: 1988-2025

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Areas of Expertise:
Optical Isolator
Transparent Ceramics
Magneto-Optical Device
Faraday Rotator
Sintering
Silicone Rubber
Optical Waveguide
Silicon Substrate
Radiation Detector
Single Crystal Wafer
21 patents (USPTO):Explore Patents

Title: Shinji Makikawa: Pioneer in Transparent Ceramics and Magneto-Optical Devices

Introduction

Shinji Makikawa is an accomplished inventor based in Annaka, Japan, known for his significant contributions to the field of materials science, particularly in the area of transparent ceramics and magneto-optical devices. With a remarkable portfolio of 20 patents, Makikawa has demonstrated a commitment to innovation that has advanced both industrial applications and scientific knowledge.

Latest Patents

Among his latest inventions are groundbreaking patents related to transparent ceramics and magneto-optical devices. One significant patent describes a method for manufacturing a transparent ceramic material by molding a source powder, which consists primarily of a rare earth oxide made up of at least 40 mol % of terbium oxide combined with another rare earth oxide. This innovative method includes sintering the compact at high temperatures (between 1,300° C. and 1,650° C.) to enhance the material's diffuse transmittance in the visible spectrum, while enabling its application as a magneto-optical device across a broad visible to NIR (near-infrared) region. Another notable patent details the production of a starting material powder that integrates terbium oxide with other rare earth oxides and uses a sintering aid to optimize the final material properties.

Career Highlights

Shinji Makikawa's career includes pivotal roles at leading companies such as Shin-Etsu Chemical Co., Ltd., where he honed his skills and contributed to major advancements in material science. His research and inventions have not only led to patents but have also contributed significantly to the broader field of transparent materials.

Collaborations

Throughout his career, Makikawa has collaborated with esteemed researchers, including Seiki Ejima and Toshiaki Watanabe. These partnerships have played an essential role in fostering innovative ideas and advancing research in the areas of ceramics and optical materials.

Conclusion

Shinji Makikawa stands out as an influential inventor whose work in transparent ceramics and magneto-optical devices is shaping the future of material sciences. With a substantial number of patents credited to his name, his contributions continue to have a lasting impact on various industries and research institutions. His ongoing efforts exemplify the spirit of innovation that drives technology forward.

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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