Odawara, Japan

Masaaki Igarashi

This inventor holds 2 USPTO granted patents. Top assignee: Fuji Photo Film Company, Limited. Active years: 1978-1979.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Igarashi. Retrieved from https://idiyas.com/inventor/masaaki-igarashi-t2c3qmt3

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 = 6.5

ph-index = 2

Forward Citations = 30(Granted Patents)


Location History:

  • Odawara, JA (1978)
  • Odawara, JP (1979)

Company Filing History:


Years Active: 1978-1979

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2 patents (USPTO):Explore Patents

Title: Masaaki Igarashi: Innovator in Magnetic Recording Substances

Introduction

Masaaki Igarashi is a notable inventor based in Odawara, Japan. He has made significant contributions to the field of magnetic recording substances, holding a total of 2 patents. His work has advanced the technology used in various recording mediums.

Latest Patents

Igarashi's latest patents focus on innovative magnetic recording substances. One patent describes a magnetic recording substance that includes a non-magnetic support and a magnetic recording layer. This layer contains carbon black with a surface area of at least 700 m²/g and an oil absorption of at least 300 ml (DBP)/100 g. This composition effectively lowers the surface electric resistance without compromising the characteristics of the magnetic recording layer. Another patent details a magnetic recording substance that comprises a support and a magnetic layer containing a ferromagnetic metal powder. This powder is obtained through a unique process involving the mixing of an aqueous slurry with an organic solvent, followed by distillation to remove water.

Career Highlights

Masaaki Igarashi is associated with Fuji Photo Film Company, Limited, where he has applied his expertise in developing advanced magnetic recording technologies. His innovative approaches have contributed to the company's reputation in the industry.

Collaborations

Igarashi has collaborated with notable coworkers, including Masashi Aonuma and Hiromi Nakahara. Their combined efforts have fostered a creative environment that encourages innovation in their field.

Conclusion

Masaaki Igarashi's contributions to magnetic recording substances highlight his role as a key inventor in this technology. His patents reflect a commitment to enhancing the performance of recording materials.

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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