Company Filing History:
4 out of 629 
4 out of 2,419 
1 out of 36,713 
Years Active: 1989-2020
Title: Kazuhisa Sugiyama: Innovator in Pressure Reducing Valves
Introduction
Kazuhisa Sugiyama is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of engineering, particularly in the development of pressure reducing valves. With a total of 8 patents to his name, Sugiyama's work has had a considerable impact on various industries.
Latest Patents
One of his latest patents is a pressure reducing valve that includes a body, an annular valve seat, a valve element, and a pressing mechanism designed to press the valve element. The pressing mechanism features a plug located downstream of the valve seat, which has a plug hole. A pin with a sliding portion is inserted into the plug hole, creating a gap between the sliding portion and the inner surface of the plug hole. The upstream end of the pin contacts the valve element. The design ensures that the fitting length of the sliding portion and the gap between the sliding portion and the plug hole satisfy the condition 0.0005 L < C < 0.00908 L, where L represents the fitting length and C denotes the gap.
Another significant patent involves a valve main unit designed for high-pressure applications, which includes a channel for hydrogen gas. The internal surface of this channel is formed by an oxidation layer created through anodizing an aluminum-based alloy. The anodizing process is conducted under specific conditions to ensure that the oxidation layer has a thickness of 8 µm or less at the external surface of the valve main unit, which features an opening that communicates with the channel.
Career Highlights
Kazuhisa Sugiyama has worked with prominent companies such as Toyoda Koki and Jtekt Corporation. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the field of valve technology.
Collaborations
Throughout his career, Sugiyama has collaborated with talented individuals, including Koji Nishi and Akira Yamashita. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Kazuhisa Sugiyama's contributions to the field of pressure reducing valves exemplify his innovative spirit and dedication to engineering. His patents reflect a commitment to advancing technology and improving industrial applications.