Konan, Japan

Seiji Sumikawa

This inventor holds 10 USPTO granted patents. Top assignees: Diesel Kiki Co., Ltd., Diesel Kiki Kabushiki Kaisha, Nissan Motor Company Limited. Active years: 1981-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Sumikawa. Retrieved from https://idiyas.com/inventor/seiji-sumikawa

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 = 2.4

ph-index = 9

Forward Citations = 274(Granted Patents)


Location History:

  • Saitama, JP (1983 - 1988)
  • Konan, JP (1981 - 1989)

Company Filing History:


Years Active: 1981-1989

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10 patents (USPTO):Explore Patents

Title: Seiji Sumikawa: Innovator in Rotary Compressor Technology

Introduction

Seiji Sumikawa is a prominent inventor based in Konan, Japan, known for his significant contributions to the field of rotary compressor technology. With a total of 10 patents to his name, Sumikawa has developed innovative solutions that enhance the efficiency and functionality of air conditioning systems in vehicles.

Latest Patents

Among his latest patents is the "Sliding-vane rotary compressor," which features a unique design that includes a partition wall separating an oil sump from a low-pressure chamber. This design improves the compressor's performance by ensuring efficient oil management. Another notable invention is the "Car air conditioner with heat storage tank for cooling energy." This air conditioning system utilizes a thermal storage tank to store cooling energy, allowing for effective temperature regulation within the vehicle. The system operates based on temperature sensors that monitor conditions inside and outside the car, ensuring optimal performance.

Career Highlights

Throughout his career, Seiji Sumikawa has worked with reputable companies such as Diesel Kiki Co., Ltd. and Diesel Kiki Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to advancements in automotive technology.

Collaborations

Some of his notable coworkers include Shinji Sutoh and Yoichiro Furuya, who have collaborated with him on various projects, further enhancing the innovative capabilities of their teams.

Conclusion

Seiji Sumikawa's work in rotary compressor technology and automotive air conditioning systems showcases his dedication to innovation and efficiency. His patents reflect a commitment to improving vehicle performance and comfort, making him a significant figure in the field of engineering.

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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