Location History:
- Isehara, JP (1998)
- Atsugi, JP (2009)
Company Filing History:
2 out of 5,290 
1 out of 4,714 
Years Active: 1998-2009
Title: Naofumi Shimizu: Innovator in Electromagnetic Wave Technology
Introduction
Naofumi Shimizu is a prominent inventor based in Atsugi, Japan. He has made significant contributions to the field of electromagnetic wave technology, holding a total of 2 patents. His work focuses on improving the measurement and efficiency of electromagnetic wave absorption in biological tissues.
Latest Patents
Shimizu's latest patents include a specific absorption rate measuring system and a method thereof. This invention features a biological tissue equivalent phantom unit designed for evaluating the absorption of electromagnetic wave energy. The system incorporates two or more electro-optical crystals arranged at various measurement points within the phantom, which have a dielectric constant similar to that of biological tissue. Additionally, optical fibers connect these crystals to external destinations for enhanced measurement accuracy.
Another notable patent is a pin photodiode with improved frequency response and saturation output. This innovative photodiode maintains effective internal quantum efficiency while enhancing frequency response. It consists of multiple semiconductor layers with varying bandgap energies, allowing it to function efficiently as a light absorption layer.
Career Highlights
Throughout his career, Naofumi Shimizu has worked with notable companies such as Nippon Telegraph and Telephone Corporation and NTT Docomo, Inc. His experience in these organizations has contributed to his expertise in electromagnetic technologies.
Collaborations
Shimizu has collaborated with esteemed colleagues, including Tadao Ishibashi and Tomofumi Furuta. These partnerships have fostered innovation and advancement in their respective fields.
Conclusion
Naofumi Shimizu's contributions to electromagnetic wave technology through his patents and collaborations highlight his role as a significant inventor in this domain. His work continues to influence advancements in the measurement and efficiency of electromagnetic wave absorption.