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For the Inventor, By the Inventor

Sodegaura, Japan

Nobuo Kawahara

This inventor holds 14 USPTO granted patents and 4 EPO patents. Top assignee: Mitsui Chemicals, Inc.. Active years: 2002-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobuo Kawahara. Retrieved from https://idiyas.com/inventor/nobuo-kawahara

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

USPTO Granted Patents = 14

% Patents Active = 92.9


Average Co-Inventor Count = 7.4

ph-index = 8

Forward Citations = 204(Granted Patents)


Location History:

  • Hiroshima, JP (2002)
  • Yamaguchi, JP (2005 - 2008)
  • Sodegaura-shi, JP (2010)
  • Sodegaura, JP (2006 - 2011)

Company Filing History:

goldMedal14 out of 1,816 
 
Mitsui Chemicals, Inc.
 patents

Years Active: 2002-2011

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14 patents (USPTO):Explore Patents
1. 7868097 - Hybrid polymer and method for production thereof (2011-01-11),
2. 7847021 - Aliphatic polyester resin composition containing copolymer (2010-12-07),
3. 7803888 - Olefin-based polymers and uses thereof (2010-09-28),
4. 7795347 - Multi-branched polymer, process for producing the same, and applications thereof (2010-09-14),
5. 7767313 - Polypropylene composite film comprising a metallocene-catalyzed propylene/1-butene random copolymer (2010-08-03),
6. 7678934 - Propylene copolymer, polypropylene composition and uses thereof, transition metal compound and olefin polymerization catalyst (2010-03-16),
7. 7619030 - Automobile part of polypropylene resin composition (2009-11-17),
8. 7488789 - Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization (2009-02-10),
9. 7449533 - Metallocene compound, process for preparing metallocene compound, olefin polymerization catalyst, process for preparing polyolefin, and polyolefin (2008-11-11),
10. 7081493 - Automotive part made of polypropylene resin composition (2006-07-25),
11. 7067587 - Polyolefin macromonomer, graft polymer obtained from the polyolefin macromonomer, and use thereof (2006-06-27),
12. 7022763 - Branched olefin copolymer, process for producing the same, and use thereof (2006-04-04),
13. 6939928 - Metallocene compound, process for producing metallocene compound, olefin polymerization catalyst, process for producing polyolefin, and polyolefin (2005-09-06),
14. 6372854 - Hydrogenated ring-opening metathesis polymer and its use and production (2002-04-16),

Title: **Innovations by Nobuo Kawahara: A Pioneer in Hybrid Polymers**

Introduction

Nobuo Kawahara is a renowned inventor based in Sodegaura, Japan, holding an impressive portfolio of 14 patents. His contributions to materials science, particularly in the field of hybrid polymers, have positioned him as a significant figure in his industry.

Latest Patents

Among his most recent innovations are two notable patents. The first, titled "Hybrid Polymer and Method for Production Thereof," presents a hybrid polymer that combines a polyolefin segment with a polar polymer segment without employing a bonding group that contains a heteroatom. This innovative method offers industrial advantages in producing hybrid polymers. The second patent, "Aliphatic Polyester Resin Composition Containing Copolymer," details a modified polyolefin resin which features a copolymer structure, incorporating a propylene-based polyolefin segment and a lactic acid-containing segment. This resin composition boasts excellent heat and impact resistance, making it suitable for molding a variety of components.

Career Highlights

Nobuo Kawahara is associated with Mitsui Chemicals, Inc., a leading company in the chemical industry. His groundbreaking work in polymer technology has not only advanced materials used in various applications but also provided significant industrial benefits through the improvement of material characteristics.

Collaborations

Throughout his career, Nobuo has collaborated with esteemed colleagues such as Koji Kawai and Hiromu Kaneyoshi. These partnerships have facilitated the exchange of ideas and fostered innovation within the team, leading to notable advancements in their field.

Conclusion

Nobuo Kawahara's contributions to hybrid polymer technology highlight his role as an influential inventor. With a solid foundation of patents and collaborations, he continues to pave the way for advancements in materials science, enhancing the capabilities of modern polymers and their applications in various industries.

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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