Company Filing History:
4 out of 26 
3 out of 3 
1 out of 1 
Years Active: 1993-1996
Title: Etsuji Kawaguchi: Innovator in Refrigeration Technology
Introduction
Etsuji Kawaguchi is a notable inventor based in Moriyama, Japan. He has made significant contributions to the field of refrigeration technology, holding a total of four patents. His innovative designs focus on improving the efficiency and functionality of pulse tube refrigerators.
Latest Patents
Kawaguchi's latest patents include advancements in pulse tube refrigerator technology. One of his patents describes a system where the low-temperature end of a pulse tube is connected to a cold accumulator through an endothermic connection passage. This design allows refrigerant gas to be efficiently supplied from a compressor to the high-temperature end of the cold accumulator. Another patent features a configuration with two rotary-type three-way valves arranged in parallel within a high-pressure refrigerant gas passage. This setup enhances the control of refrigerant flow, allowing for adjustable timing between the valves.
Career Highlights
Throughout his career, Etsuji Kawaguchi has worked with prominent companies such as Iwatani Sangyo Co., Ltd. and Iwatani Plantech Corporation. His experience in these organizations has contributed to his expertise in refrigeration technology and innovation.
Collaborations
Kawaguchi has collaborated with notable colleagues, including Masayoshi Yanai and Tomio Nishitani. Their combined efforts have further advanced the field of refrigeration and enhanced the development of new technologies.
Conclusion
Etsuji Kawaguchi's contributions to refrigeration technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, showcasing the importance of innovation in improving energy efficiency and functionality in refrigeration systems.