Location History:
- Yokohama, JP (1983)
- Kanagawa, JP (1991 - 2001)
Company Filing History:
4 out of 54 
1 out of 21,351 
1 out of 1,326 
Years Active: 1983-2001
Title: The Innovations of Masayoshi Muraki
Introduction
Masayoshi Muraki is a prominent inventor based in Kanagawa, Japan. He is recognized for his contributions to the field of refrigerating machine lubricants and has been granted a total of five patents. His work demonstrates a commitment to enhancing the efficiency and effectiveness of refrigeration technology.
Latest Patents
Muraki's latest patents include advancements in lubricant compositions specifically designed for refrigerating machines employing HFC-32, HFC-125, or HFC-134A. One notable patent describes a lubricant composition that utilizes a base oil of an ester formed from a dihydric or higher polyol and a monobasic aliphatic acid. This composition is enhanced with several additives, which include a phosphate, an alkylphosphorothionate, an arylphosphorothionate, and an epoxy compound, resulting in improved performance and stability.
Additionally, Muraki has developed a refrigerating machine oil composition that is compatible with both HCFC and HFC refrigerants. This innovative machine oil comprises a polyol ester as its base oil and contains specific percentages of a phosphate, alkyl phosphorothionate, aryl phosphorothionate, and epoxy compound. The unique formulation addresses issues related to sludge formation and lubricity, ensuring enhanced compatibility with refrigerants and improved operational efficiency.
Career Highlights
Throughout his career, Masayoshi Muraki has contributed his expertise to esteemed companies, notably Mitsubishi Oil Co., Ltd. and Mitsubishi Denki Kabushiki Kaisha. His roles within these organizations have allowed him to develop cutting-edge technologies and contribute to advancements in refrigeration.
Collaborations
Muraki has collaborated with talented peers, including Yukiharu Beppu and Shozaburo Konishi. Their collective efforts have fostered an environment of innovation and excellence in the development of refrigerating machine lubricants and related technologies.
Conclusion
Masayoshi Muraki's impressive portfolio of patents and his collaborations with esteemed colleagues highlight his significant impact on refrigeration technology. His work continues to pave the way for advancements in lubricant compositions, ensuring the ongoing evolution of efficient and effective refrigeration solutions.