Location History:
- Ibaraki-ken, JP (2010)
- Ibaraki, JP (2012)
- Ushiku, JP (2015 - 2021)
Company Filing History:
6 out of 2,347 
1 out of 984 
Years Active: 2010-2021
Title: Hirobumi Nagaoka: Innovator in Nitride Crystal Production
Introduction
Hirobumi Nagaoka is a prominent inventor based in Ushiku, Japan. He has made significant contributions to the field of materials science, particularly in the production of nitride crystals. With a total of 6 patents to his name, Nagaoka's work has paved the way for advancements in various applications.
Latest Patents
One of Nagaoka's latest patents is a method for producing nitride crystals. This innovative technique allows for the efficient production of high-quality nitride crystals by charging a nitride crystal starting material that contains tertiary particles. These particles have a maximum diameter ranging from 1 to 120 mm and are formed through the aggregation of secondary particles with a maximum diameter of 100 to 1000 micrometers. The process involves crystal growth in the presence of a solvent in a supercritical and/or subcritical state within a reactor. The nitride crystal starting material is charged in the starting material charging region with a bulk density of 0.7 to 4.5 g/cm³ for optimal crystal growth.
Career Highlights
Throughout his career, Hirobumi Nagaoka has worked with notable organizations, including Mitsubishi Chemical Corporation and Tohoku University. His experience in these institutions has contributed to his expertise in the field of nitride crystal production.
Collaborations
Nagaoka has collaborated with esteemed colleagues such as Yutaka Mikawa and Hideo Fujisawa. These partnerships have further enhanced his research and development efforts in the field.
Conclusion
Hirobumi Nagaoka's innovative work in nitride crystal production showcases his dedication to advancing materials science. His contributions through patents and collaborations continue to influence the industry positively.