Takatsuki, Japan

Seiji Watatani

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi Maxell, Limited. Active years: 1982-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Watatani. Retrieved from https://idiyas.com/inventor/seiji-watatani

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 3

Forward Citations = 28(Granted Patents)


Location History:

  • Osaka, JP (1982)
  • Takatsuki, JP (1982 - 1985)

Company Filing History:


Years Active: 1982-1985

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3 patents (USPTO):Explore Patents

Title: Seiji Watatani: Innovator in Magnetic Recording Technology

Introduction

Seiji Watatani is a prominent inventor based in Takatsuki, Japan. He has made significant contributions to the field of magnetic recording technology. With a total of 3 patents to his name, Watatani's work has had a lasting impact on the industry.

Latest Patents

Watatani's latest patents include innovative designs for magnetic recording media. One of his notable inventions is a magnetic recording medium that features a base film and a magnetic layer. This magnetic layer has an elastic modulus at 1% elongation of not less than 1,200 kg/mm², which is higher than that of the base film. This design ensures excellent mechanical strength, allowing the medium to be used without buckle and injury during usage, even at a thin thickness. Another patent involves a magnetic recording medium that comprises a base material and a magnetic layer. This magnetic layer includes magnetic particles, a cellulose resin, and a polyurethane resin as binders, enhancing the dispersibility of the magnetic particles without compromising the durability of the layer.

Career Highlights

Seiji Watatani is currently employed at Hitachi Maxell, Limited, where he continues to develop cutting-edge technologies in magnetic recording. His work has been instrumental in advancing the capabilities of magnetic media, making them more efficient and reliable.

Collaborations

Watatani has collaborated with notable colleagues, including Takeshi Matsuura and Naoto Akahane. Their combined expertise has contributed to the success of various projects within the company.

Conclusion

Seiji Watatani's innovative contributions to magnetic recording technology have established him as a key figure in the field. His patents reflect a commitment to enhancing the performance and durability of magnetic media.

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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