This inventor holds 3 USPTO granted patents and 5 published patent applications and 1 EPO patent. Top assignee: Mitsubishi Chemical Corporation. Active years: 2015-2020.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yokohama, JP (2015 - 2016)
- Chiyoda-ku, JP (2020)
Company Filing History:
Years Active: 2015-2020
Title: **Innovator Spotlight: Tadahiro Katsumoto**
Introduction
Tadahiro Katsumoto is a notable inventor based in Yokohama, Japan. With a total of three innovative patents to his name, he has made significant contributions to the field of light-emitting devices, particularly in the development of high-performance sintered phosphor materials. His work has advanced the technology underpinning illumination devices and vehicular headlamps.
Latest Patents
Katsumoto's latest patents include groundbreaking inventions such as the sintered phosphor-composite for LEDs, designed to possess high heat resistance, thermal conductivity, luminance, and conversion efficacy. This new composite integrates a nitride phosphor and a fluoride inorganic binder, achieving an impressive internal quantum efficiency of 60% or more when excited by blue light at a wavelength of 450 nm. Furthermore, it boasts a transmittance of at least 20% at a wavelength of 700 nm.
Another notable patent involves a nitride LED featuring enhanced light extraction efficiency and axial luminous intensity. This invention uses a roughened nitride semiconductor substrate with a unique arrangement of protrusions that optimize light output. The light-emitting structure is strategically designed to maximize illumination while maintaining structural integrity.
Career Highlights
Katsumoto is currently affiliated with Mitsubishi Chemical Corporation, where he leverages his extensive expertise in materials science to develop cutting-edge lighting technologies. His career trajectory reflects a deep commitment to innovation, as evidenced by his impactful contributions to the semiconductor field.
Collaborations
Throughout his career, Tadahiro has worked alongside dedicated professionals such as Yukinari Haraguchi and Takeshi Otsu. These collaborations have helped push the boundaries of innovation in light-emitting devices, fostering a dynamic environment of shared knowledge and creativity.
Conclusion
Tadahiro Katsumoto stands out as a prolific inventor whose work in the realm of light-emitting devices has significant implications for various applications, including automotive lighting. His patented technologies continue to influence the industry, showcasing the importance of innovation in enhancing daily life through advanced lighting solutions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile