Shigemi Nagatomo

This inventor holds 8 USPTO granted patents. Top assignees: Kabushiki Kaisha Toshiba, Tokyo Shibaura Denki Kabushiki Kaisha. Active years: 1984-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigemi Nagatomo. Retrieved from https://idiyas.com/inventor/shigemi-nagatomo

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 7

Forward Citations = 187(Granted Patents)

Company Filing History:

6 out of 53,262

Kabushiki Kaisha Toshiba

patents

2 out of 2,916

Tokyo Shibaura Denki Kabushiki Kaisha

patents

Years Active: 1984-1989

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4875839 - Scroll member for use in a positive displacement device, and a method (1989-10-24),

2. 4762477 - Scroll compressor with control of lubricant flow (1988-08-09),

3. 4719755 - Stirling engine (1988-01-19),

4. 4708607 - Scroll compressor with lower and higher pressure chambers acting on the (1987-11-24),

5. 4696630 - Scroll compressor with a thrust reduction mechanism (1987-09-29),

6. 4673339 - Scroll compressor with suction port in stationary end plate (1987-06-16),

7. 4558997 - Scroll compressor with planar surfaces on the internal end portions of (1985-12-17),

8. 4442682 - Turbine for use in refrigeration cycle (1984-04-17),

Title: Shigemi Nagatomo: Innovator in Scroll Technology

Introduction

Shigemi Nagatomo is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of scroll technology, holding a total of 8 patents. His innovative designs have advanced the efficiency and functionality of various devices.

Latest Patents

Nagatomo's latest patents include a scroll member for use in a positive displacement device. This invention features a metallic end plate with a spiroidal groove and a through-hole that communicates with the groove. A resin wrap is joined to the groove, formed by injection molding, which enhances the device's performance. Another notable patent is for a scroll compressor that controls lubricant flow. This design allows lubricating oil to pass easily between the higher and lower pressure sides of the compressor, improving both sealing and lubrication between the scroll members.

Career Highlights

Throughout his career, Nagatomo has worked with esteemed companies such as Kabushiki Kaisha Toshiba and Tokyo Shibaura Denki Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Nagatomo has collaborated with notable coworkers, including Hirotsugu Sakata and Makoto Hayano. Their teamwork has fostered a creative environment that has led to groundbreaking advancements in their field.

Conclusion

Shigemi Nagatomo's contributions to scroll technology and his impressive portfolio of patents highlight his role as a leading inventor. His work continues to influence the industry and inspire future innovations.

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]