Location History:
- Kanagawa-ken, JP (2000)
- Kamakura, JP (2001 - 2021)
Company Filing History:
7 out of 52,751 
6 out of 266 
2 out of 129 
Years Active: 2000-2021
Title: Hirofumi Takemura: Innovator in Phosphor Technology
Introduction
Hirofumi Takemura is a prominent inventor based in Kamakura, Japan. He has made significant contributions to the field of phosphor technology, holding a total of 10 patents. His work focuses on developing advanced materials that enhance light-emitting devices.
Latest Patents
One of Takemura's latest patents is for a europium-activated alkaline-earth chloroapatite phosphor. This phosphor has a specific composition formula: (MEu)(PO)Cl, where M represents an alkaline-earth element that includes at least strontium and barium. The phosphor exhibits remarkable properties, with an absorptance of light at a wavelength of 400 nm being 90% or more, while the absorptance at 650 nm is 2% or less. Another notable patent involves a phosphor and method of manufacturing it, specifically a composition represented by the chemical formula 1.5YO·2.5aAlO:Ce, where a is a number that satisfies the condition 1.02 Career Highlights Throughout his career, Takemura has worked with notable companies such as Kabushiki Kaisha Toshiba and Toshiba Materials Co., Ltd. His experience in these organizations has allowed him to refine his expertise in materials science and phosphor technology. Collaborations Takemura has collaborated with esteemed colleagues, including Naotoshi Matsuda and Yasuhiro Shirakawa. These partnerships have contributed to the advancement of his research and the successful development of innovative technologies. Conclusion Hirofumi Takemura'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 the development of advanced light-emitting devices, showcasing the importance of innovation in technology.