Location History:
- Yokohama, JA (1978)
- Kanagawa, JP (1989 - 1995)
- Hitachi, JP (2001)
- Kudamatsu, JP (2001)
- Yokohama, JP (1983 - 2006)
Company Filing History:
13 out of 690 
11 out of 42,485 
4 out of 84 
Years Active: 1978-2006
Title: Hiroshi Hasegawa: Innovator in Refrigeration Fluid Technology
Introduction: Hiroshi Hasegawa is a prominent inventor based in Yokohama, Japan, with a notable contribution to the field of refrigeration technology. With a remarkable portfolio of 32 patents, Hasegawa has developed innovative fluid compositions that significantly enhance the efficiency and environmental sustainability of refrigeration systems.
Latest Patents: One of Hasegawa's latest patents is centered around fluid compositions containing refrigeration oils and chlorine-free fluorocarbon refrigerants. This patent details a novel fluid composition suitable for refrigerators, comprising a chlorine-free fluorocarbon refrigerant combined with a refrigerator oil. The refrigerator oil is primarily a tetraester of pentaerythritol, which is crafted using both 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid, showcasing a pour point not exceeding -10°C. Additionally, another significant patent focuses on a refrigerator oil meant for compressors that utilize hydrogen-containing halogenocarbons as refrigerants. In this patent, the base oil includes a variety of esters, including a specific pentaerythritol ester, and is further enriched with epoxy compounds to enhance performance.
Career Highlights: Hiroshi Hasegawa has had a distinguished career, having worked with major companies such as Nippon Oil Company and Hitachi, Ltd. His experience in these prestigious organizations has significantly influenced his innovative work and patent development within the refrigeration sector.
Collaborations: Throughout his career, Hasegawa has collaborated with notable colleagues including Umekichi Sasaki and Noboru Ishida. Their collective expertise and teamwork have contributed to the advancements in refrigeration fluids and technologies.
Conclusion: Hiroshi Hasegawa stands out as a leading inventor in the realm of refrigeration technology. His numerous patents demonstrate a commitment to innovation and sustainability, shaping the future of how refrigeration systems operate. As he continues to develop new solutions, Hasegawa's impact on the industry remains significant, fostering advancements that align with modern environmental needs.
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.