Okazaki, Japan

Katsumasa Matsui

This inventor holds 5 USPTO granted patents. Top assignee: Nippondenso Co., Ltd.. Active years: 1985-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumasa Matsui. Retrieved from https://idiyas.com/inventor/katsumasa-matsui

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.2

ph-index = 5

Forward Citations = 172(Granted Patents)


Location History:

  • Kariya, JP (1987)
  • Okazaki, JP (1985 - 1990)

Company Filing History:


Years Active: 1985-1990

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5 patents (USPTO):Explore Patents

Title: Innovations by Katsumasa Matsui

Introduction

Katsumasa Matsui is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of refrigeration and air conditioning technology. With a total of 5 patents to his name, Matsui's work reflects a commitment to enhancing the efficiency and functionality of climate control systems.

Latest Patents

Matsui's latest patents include a refrigeration cycle control apparatus and an air conditioner for automobiles. The refrigeration cycle control apparatus utilizes modern control theory for feedback control of refrigeration cycles in air conditioning systems. This apparatus is designed as an optimal regulator, controlling inputs such as the capacity of a compressor and the degree of opening of an expansion valve. The control output includes critical parameters like the temperature of air downstream of the evaporator and the superheat of refrigerant.

The air conditioner for automobiles features an air conditioning unit that adjusts the temperature of blow-off air in vehicle compartments. It includes a decision device that determines the initial state of the air conditioning unit and a control unit that performs feedback control to maintain the internal temperature at a set target. This control unit is also designed as an integral-added optimal regulator, utilizing predetermined optimal feedback gains based on a dynamic model of the air conditioning system.

Career Highlights

Matsui is currently employed at Nippondenso Co., Ltd., a company known for its advancements in automotive technology. His work has significantly impacted the efficiency of air conditioning systems, particularly in vehicles.

Collaborations

Matsui has collaborated with notable coworkers such as Masahiro Ohba and Tohru Kakehi, contributing to the innovative projects at Nippondenso Co., Ltd.

Conclusion

Katsumasa Matsui's contributions to refrigeration and air conditioning technology demonstrate his expertise and innovative spirit. His patents reflect a deep understanding of modern control theory and its application in practical systems. His work continues to influence the industry and improve climate control solutions.

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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