Location History:
- Joestsu, JP (2015)
- Jyoetsu, JP (2016 - 2020)
- Joetsu, JP (2011 - 2024)
Company Filing History:
29 out of 5,975 
2 out of 164,197 
Years Active: 2011-2025
Title: Masashi Iio: A Pioneer in Photosensitive Resin Innovations
Introduction
Masashi Iio, a prolific inventor based in Joetsu, Japan, has made significant contributions to the field of materials science through his innovative work on photosensitive resin compositions. With a remarkable portfolio of 29 patents, Iio has dedicated his career to advancing technologies that have widespread applications in electronics and manufacturing.
Latest Patents
Masashi Iio’s latest patents reflect his expertise in developing negative and positive photosensitive resin compositions. His negative photosensitive resin composition includes an alkali-soluble resin featuring structures from polyimides, polyamides, polybenzoxazoles, and polyamide-imides. This innovative composition incorporates a polymer compound formed by cyclopolymerization and a light-sensitive compound that generates acid, in addition to a heat crosslinking agent. Furthermore, his positive photosensitive resin composition showcases a similar alkali-soluble resin and introduces a quinonediazide structure as a photosensitizer, enhancing the dissolution speed in alkaline solutions. Iio's patents also detail methods for forming cured films and surface protective films that are crucial for electronic component fabrication.
Career Highlights
Throughout his career, Masashi Iio has been associated with renowned companies, including Shin-Etsu Chemical Co., Ltd. and the International Business Machines Corporation (IBM). His work has placed him at the forefront of material innovation, contributing to essential advancements in fields such as electronics and chemical engineering. Iio’s relentless pursuit of excellence in resin composition has led to cutting-edge developments that enhance both performance and reliability in various applications.
Collaborations
Iio has collaborated with notable peers including Katsuya Takemura and Hiroyuki Urano, fostering a dynamic environment that encourages innovation. These collaborations have not only enriched his research but have also contributed to the collective knowledge in the field of photosensitive materials.
Conclusion
Masashi Iio's significant contributions and innovations in the realm of photosensitive resin compositions underscore his status as a key figure in materials science. His multiple patents and collaborations with industry leaders highlight his commitment to advancing technology and improving the functionality of electronic components. Iio's work continues to inspire future generations of inventors and researchers dedicated to pushing the boundaries of innovation.