Ohtake, Japan

Munetsugu Nakatani

This inventor holds 7 USPTO granted patents. Top assignee: Mitsubishi Rayon Company, Limited. Active years: 1979-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Munetsugu Nakatani. Retrieved from https://idiyas.com/inventor/munetsugu-nakatani

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 = 4.1

ph-index = 5

Forward Citations = 107(Granted Patents)


Location History:

  • Otaki, JP (1980)
  • Ohtake, JP (1979 - 1994)

Company Filing History:


Years Active: 1979-1994

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7 patents (USPTO):Explore Patents

Title: Munetsugu Nakatani: Innovator in Carbon Fiber Technology

Introduction

Munetsugu Nakatani is a prominent inventor based in Ohtake, Japan. He has made significant contributions to the field of carbon fiber technology, holding a total of 7 patents. His work focuses on developing high-performance carbon fibers that are essential for various applications, including sporting goods and aerospace industries.

Latest Patents

Nakatani's latest patents include innovations in carbon fibers that exhibit high tenacity and high modulus of elasticity. One notable patent describes a carbon fiber with a fiber diameter ranging from 1 to 6 micrometers, a strand tenacity of 430 kg/mm² or more, a strand modulus of elasticity of 28 ton/mm² or more, and a density of 1.755 g/cm³ or more. This advanced carbon fiber is particularly valuable as a raw material for composite materials used in sporting goods such as fishing rods and golf clubs, as well as in the aerospace sector.

Another significant patent outlines a process for producing carbon fibers with high tenacity and modulus. This process involves subjecting acrylonitrile precursor fibers to a flame-resisting treatment in an oxidizing atmosphere while elongating them by at least 3%. The fibers are treated to increase their density up to 1.40 g/cm³ and are then heat-treated under tension. The resulting fibers possess excellent properties, including high strand tenacity, high strand modulus, and high density.

Career Highlights

Munetsugu Nakatani is associated with Mitsubishi Rayon Company, Limited, where he has been instrumental in advancing carbon fiber technology. His innovative approaches have led to the development of materials that meet the demanding requirements of various industries.

Collaborations

Nakatani has collaborated with notable coworkers, including Yoshitaka Imai and Hiroshi Sato. Their combined expertise has contributed to the successful development of advanced carbon fiber technologies.

Conclusion

Munetsugu Nakatani's contributions to carbon fiber technology have positioned him as a key figure in the field. His innovative patents and processes continue to influence the development of high-performance materials for diverse applications.

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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