Kiryu, Japan

Junichi Takagi

This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Hitachi Appliances, Inc. Active years: 2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junichi Takagi. Retrieved from https://idiyas.com/inventor/junichi-takagi-zm2imyow

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank


Average Co-Inventor Count = 5.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2009

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1 patent (USPTO):Explore Patents

Title: Innovations of Junichi Takagi in Heat-Pump Technology

Introduction

Junichi Takagi is a notable inventor based in Kiryu, Japan, recognized for his contributions to heat-pump technology. His innovative approach addresses critical issues in hot water supply systems, particularly in enhancing efficiency and performance.

Latest Patents

Takagi holds a patent for a heat-pump hot water supply apparatus. This invention effectively resolves problems related to delayed heating rise-up time when restarting the system. It also mitigates adverse effects on starting characteristics caused by liquid refrigerant residing in the evaporator during operation. The apparatus includes a heat-pump refrigerant circuit, which consists of a compressor, a water/refrigerant heat exchanger, a refrigerant adjusting valve, and an evaporator. The design incorporates a direct hot-water supply circuit that heats water from an external source, ensuring efficient operation.

Career Highlights

Junichi Takagi is associated with Hitachi Appliances, Inc., where he has made significant strides in the field of heat-pump technology. His work has contributed to advancements in energy efficiency and sustainability in hot water supply systems.

Collaborations

Takagi has collaborated with notable colleagues, including Taichi Tanaami and Masahiko Gommori, to further enhance the development of innovative technologies in their field.

Conclusion

Junichi Takagi's contributions to heat-pump technology exemplify the importance of innovation in improving energy efficiency and performance in hot water supply systems. His work continues to influence advancements in this critical area of technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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