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For the Inventor, By the Inventor

Chiba, Japan

Kikuo Nagatoshi

This inventor holds 10 USPTO granted patents. Top assignee: Idemitsu Kosan Company, Limited. Active years: 1978-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kikuo Nagatoshi. Retrieved from https://idiyas.com/inventor/kikuo-nagatoshi

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

USPTO Granted Patents = 10

% Patents Active = 80.0

Average Co-Inventor Count = 3.2

ph-index = 5

Forward Citations = 45(Granted Patents)


Location History:

  • Kisarazu, JA (1978)
  • Kisarazu, JP (1978 - 1992)
  • Ichihara, JP (2009)
  • Chiba, JP (1989 - 2012)

Company Filing History:

goldMedal10 out of 2,283 
 
Idemitsu Kosan Company, Limited
 patents

Years Active: 1978-2012

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10 patents (USPTO):Explore Patents
1. 8299150 - Aromatic polycarbonate resin composition and molding thereof (2012-10-30),
2. 7482333 - Polycarbonate resin composition and moldings thereof (2009-01-27),
3. 5089340 - Polycanoaryl ether laminate (1992-02-18),
4. 4977234 - Polycyanoaryl ether composition method for preparing the same and uses (1990-12-11),
5. 4853443 - Polycyanoaryl ether with thermoplastic resin (1989-08-01),
6. 4812507 - Reinforced resinous composition comprising polycyano arylene ether (1989-03-14),
7. 4199491 - Polyolefin resin composition (1980-04-22),
8. 4181689 - Resin compositions containing modified polypropylene (1980-01-01),
9. 4111898 - Process for production of resin compositions with excellent plating (1978-09-05),
10. 4078017 - Process for production of modified polypropylene (1978-03-07),

Title: Kikuo Nagatoshi: Innovator in Polycarbonate Resin Technology

Introduction

Kikuo Nagatoshi is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of polycarbonate resin technology, holding a total of 10 patents. His work focuses on developing innovative resin compositions that enhance performance and usability in various applications.

Latest Patents

Nagatoshi's latest patents include an aromatic polycarbonate resin composition and its molding process. This composition exhibits small molding shrinkage anisotropy, high dimensional stability, and high flowability. The formulation consists of an admixture that includes aromatic polycarbonate resin, silicate-containing inorganic filler, and specific phosphoric acid esters. Another notable patent involves a polycarbonate resin composition that combines aromatic polycarbonate resin with silicon-containing inorganic fillers, enhancing impact strength and antistatic performance while maintaining thermal stability.

Career Highlights

Kikuo Nagatoshi is currently associated with Idemitsu Kosan Company, Limited, where he continues to innovate in the field of polymer materials. His expertise in resin technology has positioned him as a key figure in the development of advanced materials that meet industry demands.

Collaborations

Throughout his career, Nagatoshi has collaborated with notable colleagues such as Akio Inayoshi and Shigeru Matsuo. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Kikuo Nagatoshi's contributions to polycarbonate resin technology have significantly impacted the industry. His innovative patents and collaborative efforts continue to drive advancements in material science.

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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