This inventor holds 45 USPTO granted patents and 8 EPO patents, primarily in Skyrmion Memory Technology. Top assignees: Riken Corporation, Japan Science and Technology Agency, Japan Science and Technology Corporation. Active years: 1990-2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kanagawa, JP (1996)
- Kanagawa-ken, JP (1999)
- Tsukuba-shi, Ibaraki-Ken, JP (2001)
- Yokohama, JP (2000 - 2004)
- Okazaki, JP (2003 - 2004)
- Sagamihara, JP (2002 - 2006)
- Ibaraki, JP (2006)
- Sendai-shi Miyagi, JP (2003 - 2007)
- Tsukuba, JP (2009 - 2012)
- Miyagi, JP (2006 - 2013)
- Osaka, JP (2013)
- Sendai, JP (2004 - 2014)
- Tokyo, JP (1990 - 2019)
- Saitama, JP (2019)
- Wako, JP (2021)
Company Filing History:
9 out of 890 
7 out of 1,328 
5 out of 373 
Years Active: 1990-2025
Areas of Expertise:
Title: **Masashi Kawasaki: Innovator in Photoelectric Conversion Technologies**
Introduction
Masashi Kawasaki is a distinguished inventor hailing from Sendai, Japan, known for his significant contributions to the field of photoelectric conversion and electronic devices. With an impressive portfolio of 44 patents, he has established himself as a leading innovator in the technological realm.
Latest Patents
Among his latest patents, Kawasaki has innovated a range of advanced technologies. His work on a **photoelectric conversion device** encompasses a design that utilizes a polar material without a p-n junction, featuring first and second electrodes positioned at a designated interval. The unique structure of this photoelectric conversion element ensures that light incidence generates electromotive force, facilitating continuous electric current extraction without a voltage application.
Additionally, he has made strides in the development of an **electronic device** that integrates a topological insulator, displaying magnetism and varying coercivity across its regions. The innovative **fabrication method of a topological insulator** enhances its properties by introducing ion irradiation to create regions with different coercivities, paving the way for advancements in memory devices.
Career Highlights
Kawasaki's professional journey has been marked by his tenure at Riken Corporation, where he contributed to groundbreaking research and development in the field of electrical engineering. His prolific inventiveness has garnered recognition within the scientific community and has laid the groundwork for future innovations in photoelectric and topological insulator technologies.
Collaborations
Throughout his career, Kawasaki has collaborated with notable figures in the field, including Yoshinori Tokura and Hideomi Koinuma. These partnerships reflect his integration within a network of esteemed researchers dedicated to advancing technology.
Conclusion
Masashi Kawasaki stands out as a visionary inventor whose patents and innovative approaches continue to influence the realms of photoelectric conversion and electronic device technology. His contributions not only serve to enhance existing technologies, but they also inspire future generations of inventors and researchers in the field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile