Tokyo, Japan

Youji Hirao

This inventor holds 1 USPTO granted patent. Top assignee: Tdk Corporation. Active years: 2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Youji Hirao. Retrieved from https://idiyas.com/inventor/youji-hirao

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


Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2011

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1 patent (USPTO):Explore Patents

Title: Youji Hirao: Innovator in Magnetic Head Manufacturing

Introduction

Youji Hirao is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic head manufacturing, particularly through his innovative polishing methods.

Latest Patents

Hirao holds a patent for a retainer ring used for polishing a structure in the manufacturing of magnetic heads. The patent, titled "Retainer ring used for polishing a structure for manufacturing magnetic head, and polishing method using the same," describes a polishing method that utilizes a retainer ring made of a ceramic material containing AlTiC. This method is crucial for achieving a polished surface on a ceramic substrate during the manufacturing process.

Career Highlights

Hirao is associated with TDK Corporation, a leading company in electronic components. His work focuses on enhancing the efficiency and quality of magnetic head production through innovative techniques.

Collaborations

Hirao has collaborated with notable colleagues, including Hiroki Aritomo and Tetsuji Hori, to advance research and development in their field.

Conclusion

Youji Hirao's contributions to the magnetic head manufacturing industry through his patented polishing methods highlight his role as an influential inventor. His work continues to impact the efficiency of manufacturing processes in this specialized area.

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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