Company Filing History:
4 out of 27,375 
1 out of 13,281 Years Active: 2004-2015
Title: Masao Nakano: Innovator in Compressor and Refrigerant Pump Technology
Introduction
Masao Nakano is a notable inventor based in Shiga, Japan. He has made significant contributions to the field of compressor and refrigerant pump technology. With a total of 5 patents to his name, Nakano's work has enhanced the reliability and efficiency of refrigeration systems.
Latest Patents
One of Nakano's latest patents is a compressor that utilizes steel and cast iron sliding materials. This innovative design features a steel base material for the sliding material vane, which is nitrided, and a CrN or DLC film formed on the surface through PVD treatment. The corresponding sliding material piston is made from a Ni—Cr—Mo cast iron. This configuration effectively suppresses temperature rise due to sliding friction, particularly in the vane tip region and the peripheral region of the piston. It also helps to relax the decomposition of refrigerants and reduces corrosion caused by hydrogen fluoride generated in reactions with water and oxygen, thereby providing a compressor with higher reliability.
Another significant patent is a refrigerant pump that includes rotors in a bearing. This pump consists of a thin-walled hermetic vessel and a thick-walled hermetic vessel, with one end secured to the other. The stator of an electric motor unit is fitted outside the thin-walled hermetic vessel, while the rotor is housed inside it. A pump mechanism is located within the thick-walled hermetic vessel, and the rotational force of the rotor is transmitted to the pump mechanism via a drive shaft.
Career Highlights
Throughout his career, Nakano has worked with prominent companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in compressor and refrigerant technology.
Collaborations
Nakano has collaborated with several talented individuals in his field, including Hiromasa Ashitani and Masafumi Fukushima. These collaborations have contributed to the advancement of technology in refrigeration systems.
Conclusion
Masao Nakano's contributions to compressor and refrigerant pump technology have made a lasting impact on the industry. His innovative designs and patents continue to enhance the reliability and efficiency of refrigeration systems.