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For the Inventor, By the Inventor

Komatsu, Japan

Shigeru Tokai

This inventor holds 10 USPTO granted patents. Top assignees: Kabushiki Kaisha Komatsu Seisakusho, Komatsu Corporation. Active years: 1985-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeru Tokai. Retrieved from https://idiyas.com/inventor/shigeru-tokai

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 6

Forward Citations = 94(Granted Patents)


Location History:

  • Ishikawa, JP (1994 - 1998)
  • Komatsu, JP (1985 - 1999)

Company Filing History:

goldMedal7 out of 1,009 
 
Kabushiki Kaisha Komatsu Seisakusho
 patents
silverMedal3 out of 2,813 
 
Komatsu Corporation
 patents

Years Active: 1985-1999

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10 patents (USPTO):Explore Patents
1. 5899964 - Bending angle detector and straight line extracting device for use (1999-05-04),
2. 5839310 - Press brake (1998-11-24),
3. 5813263 - Ram position setting method and ram control unit for press brake (1998-09-29),
4. 5704238 - Automatic die driving amount correction method (1998-01-06),
5. 5661671 - Bending angle detecting position setting device (1997-08-26),
6. 5652805 - Bending angle detector and straight line extracting device for use (1997-07-29),
7. 5285668 - System for detecting bending angle for press brake (1994-02-15),
8. 5272643 - Press brake with crown adjustment and movable table adjustment calculate (1993-12-21),
9. 5176017 - Tool position controller of bending machine (1993-01-05),
10. 4510789 - Press brake (1985-04-16),

Title: Shigeru Tokai: Innovator in Bending Angle Detection Technology

Introduction

Shigeru Tokai is a notable inventor based in Komatsu, Japan. He has made significant contributions to the field of bending angle detection and straight line extraction technology. With a total of 10 patents to his name, Tokai's work has advanced the capabilities of manufacturing processes.

Latest Patents

One of Tokai's latest patents is a bending angle detector and straight line extracting device. This innovative device utilizes a linear projected light image that is formed on the surface of a workpiece. The image is photographed by a device, allowing the actual inclination angle of a specimen to be stored as data. This data corresponds with the inclination angle and position of the specimen in the image. By accessing this data, the bending angle of the workpiece can be accurately obtained. Additionally, in the main straight line extraction process, main pixels are derived from the brightness distribution of pixels aligned on specified axes. This allows for the extraction of a main straight line from a plurality of main pixels. The device is designed to photograph a lower bender, enabling the extraction of a second straight line from the bottom end of the image. Furthermore, a potential bending step for detecting the bending angle of the workpiece is calculated from simulation data on the bending state during each bending step.

Career Highlights

Throughout his career, Shigeru Tokai has worked with prominent companies such as Kabushiki Kaisha Komatsu Seisakusho and Komatsu Corporation. His experience in these organizations has contributed to his expertise in the field of bending technology.

Collaborations

Tokai has collaborated with notable coworkers, including Toshiyuki Ooenoki and Toshiro Otani. Their combined efforts have furthered advancements in the technologies they have developed.

Conclusion

Shigeru Tokai's innovative work in bending angle detection and straight line extraction has made a significant impact in the manufacturing industry. His contributions continue to influence the development of advanced technologies.

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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