This inventor holds 8 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Air Conditioning Systems Co., Ltd., Hitachi, Ltd., Trustee, for the Benefit of Hitachi Air Conditioning Systems Co., Ltd.. Active years: 1986-2006.
Company Filing History:
6 out of 42,719 
1 out of 7 
1 out of 6 Years Active: 1986-2006
Title: Akira Saruta: Innovator in Refrigeration Technology
Introduction
Akira Saruta is a notable inventor based in Chiba, Japan, recognized for his contributions to refrigeration technology. With a total of eight patents to his name, Saruta has made significant advancements in the design and functionality of refrigerating devices and machines.
Latest Patents
Among his latest innovations is a refrigerating device that features a refrigerating cycle with multiple compressors driven by motors. This device includes a variable speed compressor that can be controlled in capacity, alongside a constant speed compressor equipped with a rotor core made of a cage-type conductor and permanent magnets. Another significant patent is for a refrigerating machine that utilizes a compressor driven by a motor. This motor incorporates an armature with an iron core, which also features a cage-type conductor and a permanent magnet, allowing it to function as a synchronous motor. The design includes a bypass passage between the discharge and suction sides of the compressor, along with a shut-off valve that operates based on discharge pressure and drive current values.
Career Highlights
Throughout his career, Akira Saruta has worked with prominent companies such as Hitachi, Ltd. and Hitachi Air Conditioning Systems Co., Ltd. His experience in these organizations has contributed to his expertise in refrigeration technology and innovation.
Collaborations
Saruta has collaborated with notable colleagues, including Susumu Nakayama and Hiroaki Tsuboe, who have also contributed to advancements in the field.
Conclusion
Akira Saruta's work in refrigeration technology exemplifies innovation and dedication to improving energy efficiency and functionality in cooling systems. His patents reflect a commitment to advancing the industry and enhancing the performance of refrigerating devices.