Company Filing History:
20 out of 15,844 
4 out of 24 Years Active: 2013-2025
Title: Hiroki Ishiyama: Pioneering Innovations in Refrigeration Technology
Introduction
Hiroki Ishiyama is a prominent inventor based in Tokyo, Japan, with a significant portfolio comprising 23 patents. His work primarily revolves around advancements in refrigeration technology, showcasing his ingenuity and dedication to enhancing efficiency in thermal management systems.
Latest Patents
Among his latest inventions, Ishiyama has developed a Refrigeration Cycle Apparatus that innovatively switches the refrigerant circulation direction between two modes. In the first circulation direction, the refrigerant flows through a sequence involving a heat exchanger, a compressor, another heat exchanger, and a decompressor. In contrast, the second direction involves the compressor and a different heat exchanger sequence. The apparatus features a controller that identifies specific heat exchangers and adjusts the decompressor's opening degree based on the compressor's activation duration. Another noteworthy invention is an advanced method for controlling refrigeration cycles, which incorporates R290 as the refrigerant and includes a heat absorber within the refrigerant pipe, thereby optimizing energy usage and performance.
Career Highlights
Ishiyama has significantly contributed to the field of refrigeration technology through his roles at leading companies such as Mitsubishi Electric Corporation and Sumitomo Forestry Co., Ltd. His experience in these esteemed organizations has been fundamental in shaping his innovative approach to solving complex technical challenges.
Collaborations
Throughout his career, Hiroki Ishiyama has collaborated with many talented professionals, including colleagues Yusuke Shimazu and Junichi Imai. These partnerships have fostered a rich exchange of ideas and have been instrumental in the development of his cutting-edge inventions.
Conclusion
Hiroki Ishiyama stands out as a dedicated inventor whose contributions to refrigeration technology continue to influence the industry. His extensive patent portfolio and collaborative work reflect a commitment to innovation, advancing the efficiency and effectiveness of thermal management systems in various applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.