Location History:
- Tokyo, JP (2003)
- Hitachi, JP (1981 - 2005)
Company Filing History:
21 out of 42,496 
1 out of 1 
1 out of 248 
Years Active: 1981-2005
Title: Naohiro Momma: Innovator in Semiconductor and Cooling Technologies
Introduction: Naohiro Momma is a prolific inventor based in Hitachi, Japan, holding a remarkable 22 patents. His contributions significantly impact the fields of semiconductor technology and cooling systems, showcasing advancements that enhance productivity, durability, and efficiency.
Latest Patents: Among his latest innovations are a semiconductor pressure sensor and a novel water-cooled inverter. The pressure sensor features an etch channel sealing structure designed to resist moisture and temporal changes in the diaphragm. This invention utilizes a sacrificial layer etching technique to form a small gap, which is then sealed with a silicon oxide film deposited by the CVD technique. This innovation enhances moisture resistance and improves the longevity of the sensor's diaphragm.
Momma's water-cooled inverter is designed with a unique structure that includes a combination of shallow and deep cavities within the housing. This allows for efficient cooling of power semiconductor modules through a shallow water channel, which increases cooling efficiency and reduces pressure loss. The innovative design also accommodates multiple power semiconductor modules, improving reliability while allowing for better thermal management of associated control circuits.
Career Highlights: Naohiro Momma has had a distinguished career, working with prominent companies such as Hitachi, Ltd. and Service Engineering Co., Ltd. His experience in these organizations has enabled him to develop cutting-edge technologies that meet the evolving demands of the semiconductor and electronics industries.
Collaborations: Throughout his career, Momma has collaborated with other notable professionals, including Ryuichi Saito and Atsuo Watanabe. These partnerships have facilitated knowledge exchange and fostered innovation, resulting in advancements that benefit various technological applications.
Conclusion: As an inventor, Naohiro Momma continues to push the boundaries of technology through his innovative patents. His work in semiconductor pressure sensors and cooling systems is just a glimpse of his contributions to engineering and technology. With a robust portfolio of patents and ongoing collaborations, Momma remains a key figure in advancing modern innovations.