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For the Inventor, By the Inventor

Kanagawa, Japan

Kazunori Ishizuka

This inventor holds 59 USPTO granted patents, primarily in Optical Lens Mechanisms (CPC class G02B). Top assignees: Pentax Corporation, Hoya Corporation, Asahi Kogaku Kogyo Kabushiki Kaisha. Active years: 1999-2011.

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

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

Calculating rank
USPTO Granted Patents = 59

% Patents Active = 30.5

Average Co-Inventor Count = 3.1

ph-index = 10

Forward Citations = 329(Granted Patents)

Forward Citations (Not Self Cited) = 309(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa-ken, JP (1999 - 2000)
  • Kanagawa, JP (1999 - 2011)

Company Filing History:

goldMedal31 out of 1,056 
 
Pentax Corporation
 patents
silverMedal15 out of 2,569 
 
Hoya Corporation
 patents
bronzeMedal12 out of 3,132 
 
Asahi Kogaku Kogyo Kabushiki Kaisha
 patents
4. 1 out of 38 
 
Asahi Kogaku Kabushiki Kaisha
 patents

Years Active: 1999-2011

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Areas of Expertise:
Telescoping Lens Barrel
Light Shielding Structure
Imaging Device
Retractable Photographic Lens
Cam Mechanism
Zoom Lens
Lens Barrel
Movable Lens Control
Drive Mechanism
Eccentricity-Prevention
Lens Shutter
FPC Mounting Structure
59 patents (USPTO):Explore Patents
1. 8027102 - Cam mechanism of a telescoping lens barrel (2011-09-27),
2. 7872810 - Light shielding structure of an optical device (2011-01-18),
3. 7860383 - Imaging device (2010-12-28),
4. 7835088 - Light shielding structure of an optical device (2010-11-16),
5. 7780362 - Retracting mechanism of a lens barrel (2010-08-24),
6. 7777976 - Imaging device (2010-08-17),
7. 7773871 - Retractable photographic lens (2010-08-10),
8. 7773313 - Cam mechanism of a retractable zoom lens (2010-08-10),
9. 7753598 - Lens barrel (2010-07-13),
10. 7546029 - Retractable lens system (2009-06-09),
11. 7507040 - Retractable lens system (2009-03-24),
12. 7499637 - Cam mechanism of a zoom lens (2009-03-03),
13. 7492536 - Movable lens control device (2009-02-17),
14. 7436602 - Lens barrel (2008-10-14),
15. 7408722 - Cam mechanism of a zoom lens (2008-08-05),

Title: The Innovative Mind of Kazunori Ishizuka

Introduction: Kazunori Ishizuka is a pioneering inventor hailing from Kanagawa, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Kazunori Ishizuka holds several recent patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to innovation.

Career Highlights: With a career spanning over two decades, Ishizuka has worked with leading research institutions and tech companies, playing a key role in the development of cutting-edge solutions that have revolutionized industries.

Collaborations: Throughout his career, Kazunori Ishizuka has collaborated with top engineers, scientists, and designers, fostering a culture of creativity and excellence that has led to the successful implementation of his inventions.

Conclusion: Kazunori Ishizuka's relentless pursuit of innovation and his passion for pushing the boundaries of technology make him a true visionary in the world of inventions. His impact on various sectors is profound, and his legacy continues to inspire future generations of inventors.

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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