Nagoya, Japan

Yasuharu Maruiwa

This inventor holds 8 USPTO granted patents and 1 EPO patent. Top assignees: Mitsubishi Heavy Industries Limited, Mitsubishi Jukogyo Kabushiki Kaisha. Active years: 1987-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuharu Maruiwa. Retrieved from https://idiyas.com/inventor/yasuharu-maruiwa

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 = 6.4

ph-index = 4

Forward Citations = 54(Granted Patents)


Location History:

  • Kuwana, JP (2004)
  • Nagoya, JP (1987 - 2005)
  • Aichi, JP (2012)

Company Filing History:


Years Active: 1987-2012

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8 patents (USPTO):Explore Patents

Title: Yasuharu Maruiwa: Innovator in Refrigeration Technology

Introduction

Yasuharu Maruiwa is a prominent inventor based in Nagoya, Japan, known for his significant contributions to refrigeration technology. With a total of eight patents to his name, Maruiwa has developed innovative solutions that enhance the efficiency and functionality of refrigerant compressors.

Latest Patents

One of Maruiwa's latest patents is a refrigerant compressor designed for easy assembly and efficient lubrication. This compressor features a mechanical seal that prevents oil from turning into sludge around the stationary ring, ensuring optimal performance. The design includes an inclined portion on the inner circumferential surface of the boss, which facilitates the quick discharge of lubricating oil. Another notable patent is for a scroll compressor that incorporates a fixed scroll and a swiveling scroll with spiral-shaped wall bodies. This design includes mechanisms to prevent the tip seals from being removed from the join edges, enhancing the reliability of the compressor.

Career Highlights

Throughout his career, Yasuharu Maruiwa has worked with esteemed companies such as Mitsubishi Heavy Industries Limited and Mitsubishi Jukogyo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in compressor technology.

Collaborations

Maruiwa has collaborated with notable colleagues, including Makoto Takeuchi and Takahide Itoh. These partnerships have fostered a creative environment that has led to the development of innovative solutions in the field of refrigeration.

Conclusion

Yasuharu Maruiwa's work in refrigeration technology exemplifies the spirit of innovation. His patents reflect a commitment to improving the efficiency and reliability of compressors, making significant contributions to the industry.

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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