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For the Inventor, By the Inventor

Matsudo, Japan

Kunio Yamada

This inventor holds 17 USPTO granted patents, primarily in Optical Fiber Technology. Top assignee: Seikoh Giken Co., Ltd.. Active years: 1993-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kunio Yamada. Retrieved from https://idiyas.com/inventor/kunio-yamada-bxi1le3p

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

USPTO Granted Patents = 17

% Patents Active = 82.4

Average Co-Inventor Count = 2.2

ph-index = 6

Forward Citations = 137(Granted Patents)


Location History:

  • Chiba, JP (2004)
  • Matsudo, JP (1993 - 2009)

Company Filing History:

goldMedal17 out of 156 
 
Seikoh Giken Co., Ltd.
 patents

Years Active: 1993-2009

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Areas of Expertise:
Optical Fiber
Ferrule Holder
End Face Grinding
Polishing Machine
Optical Connector
Attenuator
Fiber Assembly
Heating Apparatus
Manufacturing Method
Optical Coupler
Light Attenuating Element
17 patents (USPTO):Explore Patents
1. 7542648 - Holder for optical fiber ferrule end face grinding apparatus (2009-06-02),
2. 7494402 - Ferrule holder assembly for optical-fiber-end-face grinding apparatus (2009-02-24),
3. 7369737 - Holder for optical fiber ferrule end face grinding apparatus (2008-05-06),
4. D565066 - Holder for an optical connector end-face polishing machine (2008-03-25),
5. 7137878 - Ferrule holder assembly for optical-fiber-end-face grinding apparatus (2006-11-21),
6. 7103254 - Optical connector end face grinding apparatus (2006-09-05),
7. 7044651 - Ferrule heating apparatus and method of adhering ferrule and optical fiber (2006-05-16),
8. 6979255 - Holder for optical fiber ferrule end face grinding apparatus (2005-12-27),
9. 6808314 - Optical fiber end face polishing machine (2004-10-26),
10. 6547653 - Ferrule holder assembly for optical-fiber-end-face grinding apparatus (2003-04-15),
11. 6165055 - Optical fiber end surface polishing apparatus (2000-12-26),
12. 5675683 - Optical coupler constructed using optical fiber ferrules (1997-10-07),
13. 5668905 - Optical fiber ferrule assembly having angular index showing polarization (1997-09-16),
14. 5621835 - Optical fiber assembly and manufacturing method for the same (1997-04-15),
15. 5337377 - Optical fiber termination device (1994-08-09),

Title: Innovator Kunio Yamada: Advancements in Optical Fiber Technology

Introduction

Kunio Yamada, based in Matsudo, Japan, is a notable inventor recognized for his significant contributions to the field of optical fiber technology. With an impressive portfolio of 17 patents, Yamada continues to push the boundaries of innovation, addressing the needs of modern industries with his creative solutions.

Latest Patents

Among Yamada's recent inventions are two groundbreaking patents focused on enhancing optical fiber ferrule end face grinding apparatuses. The first patent introduced a holder designed to maximize efficiency by increasing the number of optical fiber ferrules that can be held during grinding. This holder features a plate with multiple insertion holes strategically arranged from the center to the periphery, allowing for effective use of a grinding film.

The second patent presents a ferrule holder assembly that supports optimal operation in grinding processes. This assembly is designed to move in parallel with the grinding board, featuring a ferrule holder board, ferrule sleeve, and an adapter that supports the optical fiber ferrule during grinding. The assembly includes an urging unit that ensures precise alignment, showcasing Yamada's commitment to enhancing precision in optical fiber manufacturing.

Career Highlights

Kunio Yamada is associated with Seikoh Giken Co., Ltd., a company that specializes in optical technology. Throughout his career, Yamada has established himself as a key player in the industry, continually developing innovative solutions that cater to the growing demands of optical fiber applications. His work not only exemplifies technological advancement but also addresses the practical needs of manufacturing efficiency.

Collaborations

Yamada collaborates closely with talented professionals in his field, including Takehiko Narita and Mitsuo Takahashi. These partnerships have fostered a creative environment conducive to innovation, enabling the development of cutting-edge optical solutions.

Conclusion

Kunio Yamada stands out as a visionary inventor in the optical fiber technology sector. His recent patents reflect a dedicated effort to improve manufacturing processes by addressing challenges with innovative designs. As a result, he continues to influence the industry and inspire future advancements in optical technology.

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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