Location History:
- Koganei, JA (1976 - 1977)
- Kogenei, JP (1993)
- Hamamatsu, JP (2007)
- Koganei, JP (1978 - 2013)
Company Filing History:
38 out of 42,508 
18 out of 374 
2 out of 2,945 
Years Active: 1976-2013
Areas of Expertise:
Title: The Innovative Mind of Tadaaki Hirai
Introduction: Tadaaki Hirai, a prominent inventor based in Koganei, Japan, boasts an impressive portfolio of 43 patents to his name. His contributions to the field of radiation detection technology have paved the way for advancements that enhance the efficiency and accuracy of radiation measurement.
Latest Patents: Among his latest groundbreaking patents is a radiation detector featuring a plurality of amorphous selenium layers. This innovative X-ray detector consists of an X-ray conversion layer made of amorphous selenium, which absorbs incident radiation and generates charges. A common electrode is positioned on the surface where radiation is directed, along with a signal readout substrate equipped with multiple pixel electrodes for charge collection. The design includes an electric field relaxation layer containing arsenic and lithium fluoride, strategically placed between the X-ray conversion layer and the signal readout substrate. Additionally, a crystallization suppressing layer, also containing arsenic, and a first thermal property enhancement layer are included, further enhancing the detector's performance. Another notable invention includes a radiation detection probe, which utilizes pointer light from a light-emitting device to clearly indicate measurement locations, ensuring precision in detecting radiation doses.
Career Highlights: Tadaaki Hirai has held key positions at prominent companies such as Hitachi, Ltd. and Nippon Hoso Kyokai. His work in these organizations has allowed him to collaborate with leading professionals in the field, driving the development of innovative technologies that address critical challenges in radiation detection.
Collaborations: Throughout his career, Tadaaki Hirai has worked alongside esteemed colleagues, including Yukio Takasaki and Keiichi Shidara. Their collaborative efforts have contributed significantly to advancements in detection technologies and have inspired a new generation of engineers and inventors.
Conclusion: Tadaaki Hirai's remarkable contributions to the field of radiation detection exemplify the spirit of innovation. With a wealth of knowledge and a passion for invention, he continues to push the boundaries of technology, leaving an indelible mark on the industry. His patents serve as a testament to his ingenuity and commitment to improving radiation measurement techniques, ensuring safety and accuracy in various applications.