Hukuyama, Japan

Sadamasa Shigitani

This inventor holds 1 USPTO granted patent. Top assignee: Other. Active years: 2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadamasa Shigitani. Retrieved from https://idiyas.com/inventor/sadamasa-shigitani

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:

goldMedal1 out of 834,513 
Other
 patents

Years Active: 2002

Loading Chart...
1 patent (USPTO):Explore Patents

Title: **Inventor Sadamasa Shigitani and His Contributions to Glass Substrate Chamfering**

Introduction

Sadamasa Shigitani, an innovative inventor based in Fukuyama, Japan, has made significant contributions to the field of glass substrate processing. His expertise in developing methods and apparatuses for chamfering glass substrates has earned him a patent, showcasing his dedication to advancing technology in this niche.

Latest Patents

Shigitani's notable patent, titled "Glass substrate chamfering method and apparatus," focuses on an efficient and high-quality process for chamfering glass substrates, particularly those used in hard disk manufacturing. This method employs a metal-bonded outer-surface grindstone and an inner-surface grindstone to simultaneously process both the outer periphery and the inner periphery of a doughnut-like glass substrate. The innovative approach allows for the simultaneous grinding of end surfaces and oblique surfaces, thus enhancing processing accuracy and reducing the necessity for additional buff-polishing steps.

Career Highlights

Throughout his career, Sadamasa Shigitani has demonstrated a strong commitment to enhancing glass substrate processing techniques. His unique patented method reflects a deep understanding of the requirements for high-performance materials in various applications, particularly in the tech industry. This invention highlights his contributions to improving production efficiency and product quality.

Collaborations

Sadamasa Shigitani has collaborated with distinguished professionals in the industry, including Hitoshi Ohmori and Muneaki Asami. These collaborations have fostered an environment of innovation and shared knowledge, further enhancing the development of cutting-edge technologies in glass substrate processing.

Conclusion

In conclusion, Sadamasa Shigitani stands out as a remarkable inventor whose innovations in glass substrate chamfering have made a lasting impact on the field. His patent exemplifies the blend of practical application and technical expertise, contributing significantly to the efficiency and quality of glass substrate production. As the industry continues to evolve, inventors like Shigitani will play an essential role in driving forward new technologies and processes.

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…