Okazaki, Japan

Hiromi Ohta

This inventor holds 17 USPTO granted patents, primarily in Refrigeration Cycle Technology. Top assignees: Denso Corporation, Denso Corportion. Active years: 2003-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromi Ohta. Retrieved from https://idiyas.com/inventor/hiromi-ohta

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

Calculating rank

% Patents Active = 23.5

Average Co-Inventor Count = 1.5

ph-index = 6

Forward Citations = 90(Granted Patents)


Location History:

  • Okazaki, JP (2003 - 2019)
  • Kariya, JP (2019)

Company Filing History:


Years Active: 2003-2019

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Areas of Expertise:
Expansion Valve
Refrigeration Cycle
Pressure Control Valve
Supercritical Cycle
Vapor-Compression
Heat Pump System
Flow Rate Adjustment
Ejector Cycle
Air Conditioning
Pilot On-Off Valve
High Pressure Control
Refrigerant Cycle
17 patents (USPTO):Explore Patents

Title: Hiromi Ohta: Innovator in Refrigeration Technology

Introduction

Hiromi Ohta is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of refrigeration technology, holding a total of 17 patents. His innovative designs have advanced the efficiency and functionality of refrigeration systems.

Latest Patents

One of Ohta's latest patents is for an expansion valve. This invention features a power element with a closed space between a first diaphragm and a second diaphragm. An interposing member is placed between these diaphragms, allowing for the size of the closed space to be determined based on the shape and thickness of the interposing member. This design reduces limitations on the size of the closed space, enhancing the overall efficiency of fluid enclosing spaces. Another significant patent is for a pilot on-off valve in a refrigeration cycle device. This valve includes a main on-off valve that controls a bypass passage, enabling communication between the high-pressure and low-pressure sides of the cycle. The pilot valve operates to open or close a communication passage, ensuring effective refrigerant flow.

Career Highlights

Ohta has worked with Denso Corporation, a leading company in the automotive and refrigeration sectors. His experience at Denso has allowed him to develop and refine his innovative ideas, contributing to advancements in refrigeration technology.

Collaborations

Ohta has collaborated with notable coworkers, including Motohiro Yamaguchi and Nobuharu Kakehashi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Hiromi Ohta's contributions to refrigeration technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry positively, showcasing the importance of innovation in enhancing efficiency and functionality.

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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