Location History:
- Fukuoka, JP (2001)
- Kitakyusyu, JP (1996 - 2003)
- Kitakyushu, JP (1986 - 2009)
Company Filing History:
8 out of 2,348 
2 out of 499 
1 out of 614 
Years Active: 1986-2009
Title: Kiyoji Kuma: Innovator in Polycarbonate Resin Technology
Introduction
Kiyoji Kuma is a prominent inventor based in Kitakyushu, Japan. He has made significant contributions to the field of materials science, particularly in the development of colored aromatic polycarbonate resin compositions. With a total of 11 patents to his name, Kuma's work has had a lasting impact on the industry.
Latest Patents
Kuma's latest patents include a colored aromatic polycarbonate resin composition and a process for producing the same. The colored aromatic polycarbonate resin compositions are created by dispersing a colorant selected from phthalocyanine-based compounds, anthraquinone-based compounds, and ultramarine blue in a polyalkyleneglycol compound. This compound has a specific molecular weight and is combined with an aromatic polycarbonate resin kept in a molten state. The innovative process enhances the properties of the resin, making it suitable for various applications.
Career Highlights
Throughout his career, Kiyoji Kuma has worked with notable companies such as Mitsubishi Chemical Corporation and Mitsubishi Kasei Corporation. His experience in these organizations has allowed him to refine his expertise in polymer technology and contribute to groundbreaking advancements in the field.
Collaborations
Kuma has collaborated with esteemed colleagues, including Shin-ichi Sato and Masaaki Miyamoto. These partnerships have fostered a creative environment that has led to the development of innovative solutions in resin technology.
Conclusion
Kiyoji Kuma's contributions to the field of colored aromatic polycarbonate resins exemplify his dedication to innovation and excellence. His patents and collaborations continue to influence the industry, showcasing the importance of research and development in material science.