Location History:
- Yokohama, JP (2009)
- Imaharu, JP (2010)
- Kanagawa, JP (2010)
- Tokyo, JP (2015)
Company Filing History:
5 out of 52,766 
3 out of 266 
Years Active: 2009-2025
Title: Hitoshi Aoyama – A Visionary Inventor from Tokyo
Introduction
Hitoshi Aoyama is a prominent inventor based in Tokyo, Japan, known for his significant contributions to technology with a total of 4 patents to his name. His innovative work primarily focuses on advancements in cathode components and molybdenum alloys, which have applications in various high-tech industries.
Latest Patents
Among his latest patents, Aoyama has designed a highly durable cathode component for discharge lamps. This cathode features a barrel with a wire diameter ranging from 2 to 35 mm and a tapered front end. The cathode component is composed of a tungsten alloy that includes 0.5 to 3% by weight of a thorium component. The patent specifies that not less than 90% of the tungsten crystals exhibit a grain size between 1 to 80 µm, enhancing its durability and performance.
In addition, Aoyama has developed a molybdenum alloy characterized by exceptional high-temperature strength, used in various applications such as an X-ray tube rotary anode target, an X-ray tube, and a melting crucible. This alloy, with an oxygen content of no more than 50 ppm, consists of 0.2 to 1.5% carbide by weight, where the carbide is selected from titanium, hafnium, zirconium, and tantalum carbides.
Career Highlights
Throughout his career, Hitoshi Aoyama has collaborated with notable companies such as Kabushiki Kaisha Toshiba and Toshiba Materials Co., Ltd. His work has significantly impacted the advancement of technologies related to discharge lamps and X-ray systems.
Collaborations
Aoyama's innovative journey has seen him work alongside esteemed colleagues like Shinichi Yamamoto and Koichi Watanabe. Their collaborative efforts have further fueled the development of cutting-edge technologies and innovations within their field.
Conclusion
Hitoshi Aoyama's inventive spirit and academic contributions continue to inspire future generations of inventors. With his impressive portfolio of patents and collaborations with leading companies, he remains a key figure in the realm of technological innovation and development in Japan.