This inventor holds 21 USPTO granted patents, primarily in Red Phosphor Technology. Top assignees: Sony Corporation, Dexerials Corporation, Sony Chemical & Information Device Corporation. Active years: 1988-2019.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Miayagi, JP (1988)
- Tokyo, JP (2012)
- Tochigi, JP (2014 - 2016)
- Miyagi, JP (2001 - 2019)
Company Filing History:


Years Active: 1988-2019
Areas of Expertise:
Title: Hiraku Akiho: A Pioneer in Red Phosphor Innovations
Introduction
Hiraku Akiho, based in Miyagi, Japan, is a distinguished inventor with an impressive portfolio of 21 patents. His work primarily focuses on advancements in luminous materials, particularly red phosphors, which play a crucial role in enhancing the color quality of white light sources and illuminating devices.
Latest Patents
Among his most notable inventions are patents related to red phosphors, methods for producing these phosphors, and applications within white light sources, illuminating devices, and liquid crystal display devices. Akiho's innovative compound comprises silicon, aluminum, strontium, europium, nitrogen, and oxygen, which enables the creation of a red phosphor characterized by strong luminous intensity and high luminance. His formulations provide a significant increase in the color gamut of white LEDs, showcasing formulations like [A]Eu]SiAlON, where element A can be magnesium, calcium, strontium, or barium, adhering to specific elemental ratios to optimize performance.
Career Highlights
Hiraku Akiho's career includes valuable contributions at major companies, most notably Sony Corporation and Dexerials Corporation. His tenure at these organizations allowed him to collaborate on groundbreaking technologies that elevated the standards of display and lighting solutions.
Collaborations
Throughout his career, Akiho has worked alongside talented individuals such as Tsuneo Kusunoki and Takahiro Igarashi. These collaborations have fostered an environment of creativity and innovation, further advancing the field of luminous materials and their applications.
Conclusion
Hiraku Akiho's contributions to the field of red phosphors and their applications demonstrate the vital role inventors play in pushing the boundaries of technology. His innovative patents not only enhance the efficiency of lighting devices but also pave the way for future developments in luminous materials.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile