Hiroshi Wada

Title: Hiroshi Wada: Innovator in Phosphor Technology

Introduction

Hiroshi Wada is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of phosphor technology, holding a total of 15 patents. His work focuses on developing advanced materials that enhance the performance of light-emitting devices.

Latest Patents

One of Wada's latest patents involves a europium- and strontium-based phosphor. This nitride phosphor contains europium as an activating element and strontium, or a combination of strontium and calcium, as divalent metal elements. The phosphor also includes aluminum and silicon, with at least 85% of the europium in the form of Eu. This phosphor exhibits a peak emission wavelength ranging from 590 nm to 650 nm, making it suitable for converting wavelengths of light emitted from excitation light sources in light-emitting devices. Another notable patent pertains to alloy powder for raw materials of inorganic functional materials and phosphors. This invention relates to a phosphor comprising a nitride or an oxynitride, characterized by an X-ray powder diffraction pattern with specific intensity ratios, measured in a defined range.

Career Highlights

Hiroshi Wada has worked with several prestigious companies throughout his career, including Hitachi, Ltd. and Mitsubishi Chemical Corporation. His experience in these organizations has allowed him to refine his expertise in materials science and phosphor technology.

Collaborations

Wada has collaborated with notable colleagues such as Hiromu Watanabe and Masumi Itou. These partnerships have contributed to the advancement of his research and the successful development of innovative phosphor materials.

Conclusion

Hiroshi Wada's contributions to phosphor technology and his impressive portfolio of patents highlight his role as a leading inventor in the field. His work continues to influence advancements in light-emitting devices and materials science.