Kawasaki, Japan

Takefumi Inagaki

This inventor holds 22 USPTO granted patents, plus 4 CIPO patents, primarily in Holography Technology. Top assignees: Fujitsu Corporation, Fujitsu General Limited. Active years: 1976-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takefumi Inagaki. Retrieved from https://idiyas.com/inventor/takefumi-inagaki

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


% Patents Active = 95.5

 

Average Co-Inventor Count = 4.6

ph-index = 14

Forward Citations = 581(Granted Patents)


Location History:

  • Kawasaki, JA (1976)
  • Kanagawa, JP (1990)
  • Kawasaki, JP (1979 - 2001)

Company Filing History:


Years Active: 1976-2001

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Areas of Expertise:
Air Conditioner
Ink Jet Recording
Hologram Construction
Laser Beam Scanner
Optical System
Light Beam Scanning
Pattern Recognition
Data Detection
Holographic Deflection
Edge Detection
Flaw Inspection
22 patents (USPTO):Explore Patents

Title: Innovations of Takefumi Inagaki in Air Conditioning Technology

Introduction

Takefumi Inagaki, located in Kawasaki, Japan, is a prominent inventor known for his significant contributions to air conditioning technology. With a total of 22 patents to his name, his innovations have impacted the efficiency and functionality of air conditioning units.

Latest Patents

Among Takefumi Inagaki's latest innovations are two patents related to air conditioning systems. These patents include a sophisticated design characterized by a refrigerant circuit featuring a compressor, a four-way switching valve, outdoor and indoor heat exchangers, and an expansion valve. The enclosed compressor vessel is meticulously divided into a refrigerant discharge chamber and an electric motor chamber, enhancing the system's efficiency. Notably, the design allows for two refrigerant flow path pipes on the electric motor chamber side, which can be effectively switched between the refrigerant discharge and suction sides via the four-way switching valve. This innovative approach enables a single compressor to function as either an internal high-pressure type or an internal low-pressure type.

Career Highlights

Takefumi Inagaki's professional journey has seen him work with esteemed companies like Fujitsu Corporation and Fujitsu General Limited. During his tenure, he has made notable strides in bringing his innovative concepts to life, showcasing his expertise in the field of air conditioning technology.

Collaborations

Inagaki has collaborated with talented professionals in the industry, including colleagues Hiroyuki Ikeda and Fumio Yamagishi. These collaborations have been instrumental in refining his inventions and enhancing the practical applications of his patents in real-world scenarios.

Conclusion

Takefumi Inagaki's innovative contributions to air conditioning technology illustrate the impact of dedicated research and development in enhancing everyday appliances. His extensive patent portfolio underscores his role as a leading inventor in the industry, paving the way for advancements that improve energy efficiency and comfort in residential and commercial environments.

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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