This inventor holds 42 USPTO granted patents and 10 published patent applications, plus 2 CIPO patents and 6 EPO patents, primarily in Toner Development. Top assignees: Ricoh Company, Ltd., Sumitomo Electric Industries, Limited, Agency of Industrial Science and Technology. Active years: 1986-2026.
Location History:
- Hyogo, JP (1988)
- Itami, JP (1986 - 2000)
- Numazu, JP (2007 - 2012)
- Shizuoka-ken, JP (2008 - 2015)
- Shizuoka, JP (2014 - 2022)
Company Filing History:
30 out of 28,925 
11 out of 10,627 
1 out of 1,430 
Years Active: 1986-2026
Areas of Expertise:
Title: **Masayuki Ishii: Innovator in Toner Technology**
Introduction
Masayuki Ishii, an accomplished inventor based in Numazu, Japan, has made significant contributions to the field of imaging technology through his innovative work at Ricoh Company, Ltd. With a remarkable portfolio of 28 patents, Ishii's inventions have greatly enhanced the efficiency and performance of toner products.
Latest Patents
Ishii's latest patents showcase his expertise in toner technology and image formation methods. One of his notable inventions involves a toner formula that includes base particles and external additives. The base particles consist of a binder resin and a colorant, while the external additives incorporate various fluorine-containing compounds such as aluminum hydroxide, boehmite, and pseudoboehmite. Additionally, Ishii has developed toner particles with precise characteristics, wherein a specific percentage of particles retains a high average circularity, contributing to superior toner performance.
Career Highlights
Throughout his career at Ricoh Company, Ltd., Ishii has focused on pushing the boundaries of imaging solutions. His work has not only led to significant advancements in toner formulations but has also addressed industry needs for more effective and efficient image forming apparatuses and processes.
Collaborations
Masayuki Ishii has collaborated with fellow innovators Chiaki Tanaka and Satoshi Mochizuki, showcasing a team-oriented approach in developing cutting-edge technologies in the imaging sector. Their collective efforts have resulted in patents that continue to influence various applications in printing and copying technologies.
Conclusion
Masayuki Ishii stands out as a key innovator in the toner technology landscape. His dedication to research and development at Ricoh Company, Ltd. has resulted in numerous patents that enhance the functionality and efficiency of imaging equipment. As technology continues to evolve, Ishii's contributions will undoubtedly play a pivotal role in shaping the future of imaging solutions.