Kuwana, Japan

Tsugito Nakazeki

This inventor holds 21 USPTO granted patents, primarily in Refrigeration Technology. Top assignees: Ntn Corporation, Terumo Kabushiki Kaisha, Other. Active years: 1981-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsugito Nakazeki. Retrieved from https://idiyas.com/inventor/tsugito-nakazeki

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


% Patents Active = 76.2

Average Co-Inventor Count = 2.1

ph-index = 10

Forward Citations = 837(Granted Patents)


Location History:

  • Nakano, Iwata-shi, Shizuoka-ken, JP (1981)
  • Shizuoka, JP (1992 - 2000)
  • Shizuoka-ken, JP (2000)
  • Kuwana, JP (2000 - 2010)
  • Iwata, JP (1999 - 2013)

Company Filing History:


Years Active: 1981-2013

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Areas of Expertise:
Air Cycle Refrigeration
Turbine Unit
Dynamic Bearing Device
Blood Pump
Magnetically Suspended Pump
Centrifugal Pump
Traction Drive
Laser Processing
Hydrodynamic Bearing
Electric Actuator
Speed Detecting Device
21 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Tsugito Nakazeki

Introduction: Tsugito Nakazeki, an esteemed inventor based in Kuwana, Japan, has made significant contributions to the field of air cycle refrigerating and cooling systems. With a remarkable portfolio of 21 patents, Nakazeki stands out as a visionary in the realm of engineering and technological innovations.

Latest Patents: Among his latest inventions is the "Air Cycle Refrigerating/Cooling System and Turbine Unit Used Therefor." This intricate system features a first heat exchanger for cooling air, a turbine unit that encompasses both a compressor for compressing air and an expansion turbine for adiabatically expanding that air, along with a second heat exchanger for additional cooling. Notably, both the compressor rotor and the turbine rotor are mounted on a single main shaft, where the turbine unit harnesses the power generated by the turbine rotor to drive the compressor rotor. Furthermore, an innovative aspect of this design includes the support of a thrust force on the main shaft by an electromagnet and a pressure equalizing device that maintains gas pressure across the rolling contact bearing, enhancing system efficiency and longevity.

Career Highlights: Throughout his career, Tsugito Nakazeki has been associated with notable companies including NTN Corporation, where he contributed his expertise and inventive spirit. His work has often pushed the boundaries of traditional engineering, leading to advancements that are not only innovative but also practical in various applications.

Collaborations: Nakazeki has had the pleasure of collaborating with distinguished professionals such as Toshihiko Nojiri and Teruaki Akamatsu. Their combined knowledge and skills have undoubtedly fostered an environment of creativity and innovation, leading to several groundbreaking inventions in the industry.

Conclusion: Tsugito Nakazeki's dedication to innovation in the field of air cycle refrigeration has solidified his reputation as a leading inventor. With a string of patents that reflect his innovative prowess, Nakazeki continues to inspire future generations of engineers and inventors to push the limits of technology and seek new solutions to complex problems. His journey exemplifies the essence of creativity and the impact of inventions on modern society.

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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