Saitama, Japan

Ko Ishizuka

This inventor holds 29 USPTO granted patents and 5 published patent applications and 8 EPO patents, primarily in Optical Encoders. Top assignee: Canon Kabushiki Kaisha. Active years: 1993-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ko Ishizuka. Retrieved from https://idiyas.com/inventor/ko-ishizuka

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

USPTO Granted Patents = 29 

% Patents Active = 37.9

 

Average Co-Inventor Count = 1.7

ph-index = 8

Forward Citations = 224(Granted Patents)


Location History:

  • Urawa, JP (1993)
  • Ohmiya, JP (1995 - 2002)
  • Omiya, JP (2002 - 2008)
  • Saitama-ken, JP (2009)
  • Saitama, JP (2003 - 2017)

Company Filing History:


Years Active: 1993-2017

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Areas of Expertise:
Absolute Encoder
Interferometer
Displacement Measurement
Optical Detection
Phase Difference Signals
Grating Interference
Position Detection
Wavelength Shift Measurement
Compact Measuring Apparatus
Optical Scale
Magnetic Recording
Information Recording
29 patents (USPTO):Explore Patents

Title: Innovations of Ko Ishizuka: Pioneering Technology in Absolute Encoders

Introduction: Ko Ishizuka, an accomplished inventor based in Saitama, Japan, has made significant contributions to the field of technology with a remarkable portfolio of 29 patents. His work, primarily focused on absolute encoders, is pushing the boundaries of accuracy and precision in motion detection technologies.

Latest Patents: Among his latest innovations, Ishizuka developed an absolute encoder that enhances accuracy against defects in scale. This unique encoder utilizes a detector to identify a portion of a mark array, generating a corresponding data sequence. A processor is then employed to store and process this information, enabling the output of absolute coordinates based on detected data sequences while also allowing for error detection and information rewriting.

Another noteworthy invention is a two-dimensional absolute encoder featuring a scale with marks arranged in two distinct directions. This encoder incorporates a detector for dual detection methods, capturing rows of marks in both directions. The processor within this system determines the absolute positions of the scale based on output, utilizing varying characteristic values to create a more efficient coding system.

Career Highlights: Ko Ishizuka is currently affiliated with Canon Kabushiki Kaisha, a leading company in imaging and optical products. His inventive prowess has significantly advanced the capabilities of absolute encoder technologies, ensuring precise motion tracking across various applications.

Collaborations: Throughout his career, Ishizuka has collaborated with notable coworkers such as Shigeki Kato and Yasushi Kaneda. Together, they contribute to the innovative culture at Canon, driving advancements in technology that benefit various industries.

Conclusion: Ko Ishizuka stands out as a prominent inventor whose patents in absolute encoder technology showcase his commitment to innovation. With his contributions, the accuracy and reliability of motion detection systems continue to evolve, reaffirming his position as a key player in the tech 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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