Location History:
- Higashimurayama, JP (2012)
- Kanagawa, JP (2005 - 2014)
- Tokyo, JP (1989 - 2019)
- Suginami-ku, JP (2020)
Company Filing History:
23 out of 35,705 
9 out of 2,467 
4 out of 16 
Years Active: 1989-2020
Areas of Expertise:
Title: The Innovative Contributions of Yasushi Aoki
Introduction
Yasushi Aoki, a notable inventor residing in Kanagawa, Japan, has made significant strides in the field of phosphorescent materials and organic electroluminescent devices. With an impressive portfolio of 43 patents, Aoki's innovations continue to shape modern technologies.
Latest Patents
One of Aoki's notable recent patents is the development of a reddish light-emitting phosphorescent phosphor. This compound is efficiently excited with visible light and possesses remarkable chemical stability. The phosphor's formulation, represented by MSiON:Yb,R, incorporates metal elements such as strontium, calcium, barium, and magnesium, alongside rare elements like erbium and holmium. The result is a phosphorescent material that showcases an excellent reddish afterglow.
Another significant contribution by Aoki is the design of an organic EL device. This device features an organic EL panel, an ellipsoidal reflector, a phosphor, and a laser. The innovative layout allows light emitted from the phosphor to diffuse through the substrate after being irradiated by a laser beam, enhancing the device's functionality and efficiency.
Career Highlights
Yasushi Aoki's career includes pivotal roles at NEC Corporation and NEC Electronics Corporation, where he contributed his expertise in material science and engineering. His time at these prestigious companies has facilitated his inventive journey, leading to the development of technologies that have industrial applications.
Collaborations
Throughout his career, Aoki has collaborated with esteemed colleagues such as Mitsuo Baba and Atsushi Katayama. Their joint efforts have helped to drive forward advancements in the fields of phosphorescent materials and organic electronics.
Conclusion
In summary, Yasushi Aoki stands out as a prolific inventor with significant contributions to the realms of phosphorescent materials and organic electroluminescent devices. His work not only exemplifies innovation but also pushes the boundaries of technology, influencing various industries and setting the stage for future advancements.