logo

For the Inventor, By the Inventor

Yokohama, Japan

Masahiko Igaki

This inventor holds 50 USPTO granted patents and 2 published patent applications and 7 EPO patents, primarily in Optical Encoders (CPC class 2502). Top assignees: Canon Kabushiki Kaisha, Canon Precision Inc., Nec Corporation. Active years: 1989-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiko Igaki. Retrieved from https://idiyas.com/inventor/masahiko-igaki

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

USPTO Granted Patents = 50 

% Patents Active = 50.0

 

Average Co-Inventor Count = 2.1

ph-index = 12

Forward Citations = 410(Granted Patents)

Forward Citations (Not Self Cited) = 368(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Ohta, JP (1996)
  • Tokyo, JP (1989 - 2007)
  • Kanagawa, JP (2005 - 2008)
  • Kanagawa-ken, JP (2006 - 2008)
  • Yokohama, JP (2003 - 2018)

Company Filing History:

goldMedal48 out of 92,901 
 
Canon Kabushiki Kaisha
 patents
silverMedal2 out of 16 
 
Canon Precision Inc.
 patents
bronzeMedal1 out of 36,676 
 
Nec Corporation
 patents
where one patent can have more than one assignee

Years Active: 1989-2018

Loading Chart...
Loading Chart...
Areas of Expertise:
Optical Encoder
Displacement Detection
Rotary Scale
Signal Processing
Velocity Detection
Error Correction
Camera Lens Apparatus
Sensor Signal Processor
Rotation Angle Detection
Liquid Container Detection
Optical Grating
Data Display Method
50 patents (USPTO):Explore Patents
1. 10094684 - Method of manufacturing rotary scale, rotary scale, rotary encoder, driving apparatus, image pickup apparatus and robot apparatus (2018-10-09),
2. 9329058 - Encoder that detects displacement of an object, and lens apparatus and camera having the same (2016-05-03),
3. 8805022 - Velocity detection apparatus having two detectors (2014-08-12),
4. 8527236 - Displacement detection apparatus and method of correcting error of scale used for displacement detection apparatus (2013-09-03),
5. 8487237 - Rotary encoder and method of assembling the same (2013-07-16),
6. 8422025 - Optical encoder for obtaining displacement information of object (2013-04-16),
7. 7732757 - Origin detection method for optical encoder (2010-06-08),
8. 7622698 - Detection head (2009-11-24),
9. 7425697 - Origin detection method for optical encoder (2008-09-16),
10. 7391011 - Optical encoder capable of detecting absolute position (2008-06-24),
11. 7385179 - Optical encoder for measuring displacement (2008-06-10),
12. 7358865 - Optical encoder and apparatus using optical encoder (2008-04-15),
13. 7348544 - Optical encoder with discontinuous optical grating (2008-03-25),
14. 7332708 - Optical encoder (2008-02-19),
15. 7326919 - Optical encoder (2008-02-05),

Title: The Innovative Mind of Masahiko Igaki

Introduction

Masahiko Igaki, based in Yokohama, Japan, is a prolific inventor with an impressive portfolio of 50 patents. His contributions to the field of technology, particularly in manufacturing and encoders, demonstrate his exceptional expertise and innovative thinking.

Latest Patents

Igaki's latest patents showcase his commitment to advancing technology. Among them is a method for manufacturing a rotary scale designed to be fixed to a rotating shaft of a rotating member. This innovative process consists of multiple steps, including forming a scale pattern on a substrate and precisely cutting areas to create a usable product.

Another noteworthy patent involves an encoder that detects the displacement of an object. This invention features a cylindrical body equipped with a sensor unit that identifies movement within its circumference. Igaki's designs are integral to enhancing the efficiency and precision of various imaging and robotics applications.

Career Highlights

Throughout his career, Masahiko Igaki has worked with renowned companies such as Canon Inc. and Canon Precision Inc. His experience in these prestigious organizations has allowed him to refine his skills and contribute significantly to the advancement of various technologies.

Collaborations

Igaki's career is marked by notable collaborations with industry professionals, including associates Akio Atsuta and Kenichi Kataoka. These partnerships have not only fostered innovation but have also enriched the collaborative spirit within the technology sector.

Conclusion

Masahiko Igaki stands out as a key figure in the realm of innovation. His vast number of patents and his work in significant companies underline the impact of his inventions on technology. As the industry continues to evolve, Igaki's contributions will likely serve as a foundation for future advancements.

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]
Loading…