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For the Inventor, By the Inventor

Tokyo, Japan

Jun Nakauchi

USPTO Granted Patents = 15 

Average Co-Inventor Count = 3.0

ph-index = 5

Forward Citations = 87(Granted Patents)


Location History:

  • Ohtake, JA (1978)
  • Ohtake, JP (1983)
  • New York, NY (US) (1992)
  • Tokyo, JP (1986 - 2001)
  • Otake, JP (1986 - 2001)

Company Filing History:

goldMedal15 out of 1,357 
 
Mitsubishi Rayon Company, Limited
 patents

Years Active: 1978-2001

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15 patents (USPTO):
1. 6310137 - Acrylic polymer having multilayer structure and methacrylic resin composition containing the same (2001-10-30),
2. 6228499 - Molded resin articles having marproof organic hard coat layer and non fogging organic hard coat layer, process for the production of the same, and coating materials therefor (2001-05-08),
3. 5993951 - Transparent plastic sheet (1999-11-30),
4. 5521252 - Acrylic multilayer polymer powder (1996-05-28),
5. 5164113 - Optical active compound and liquid crystal composition (1992-11-17),
6. 5124069 - Optically active substance and liquid crystal composition comprising same (1992-06-23),
7. 5098599 - Optically active compound and liquid crystal composition (1992-03-24),
8. 5045228 - Optically active compound having XI-valerolactone ring and liquid (1991-09-03),
9. 4925591 - Mesomorphic compound having .beta.-hydroxycarboxyl group as chiral (1990-05-15),
10. 4751018 - Alpha-methylcinnamic acid ester derivative and liquid crystal composition (1988-06-14),
11. 4725397 - Thermosetting preform having superior transparency and process for (1988-02-16),
12. 4629679 - Tetrazole compound-containing photopolymerizable resin composition (1986-12-16),
13. 4593975 - Image-transmitting synthetic resin rod and a process for producing the (1986-06-10),
14. 4407895 - Sensitive resins comprising 2-alkylglycidyl methacrylate homopolymer or (1983-10-04),
15. 4081430 - Aromatic polyamide crystalline complex and the method for producing the (1978-03-28),

Title: Innovations by Jun Nakauchi in Acrylic Polymer Technology

Introduction

Jun Nakauchi is an accomplished inventor based in Tokyo, Japan, recognized for his contributions to the field of polymer technology. With a remarkable portfolio of 15 patents, he has significantly advanced the properties and functionalities of acrylic polymers and related materials. His innovative work has implications across various industries, enhancing product durability and performance.

Latest Patents

Jun Nakauchi's latest inventions showcase his expertise in multilayered acrylic polymers and resin compositions. One notable patent details an acrylic polymer with a multilayer structure, which includes an innermost layer formed from a C-alkyl methacrylate and a C-alkyl acrylate, an intermediate layer formed from a C-alkyl acrylate and an aromatic vinyl monomer, and an outermost layer incorporating similar components. This advanced polymer can significantly improve impact strength, resistance to impact whitening, and transparency in methacrylic resin compositions.

Another recent patent focuses on molded resin articles featuring a marproof organic hard coat layer on one side and a non-fogging organic hard coat layer on the other. This innovative design is aimed at applications such as helmet shields and goggles, where durability and optical clarity are crucial. The process for producing these resin articles ensures that the hard coat layers adhere effectively, even in curved shapes without causing optical distortions.

Career Highlights

Jun Nakauchi is employed at Mitsubishi Rayon Company, Limited, where he continues to pioneer advancements in polymer technology. His work emphasizes not only innovation but also practical applications that enhance product performance in various settings. His 15 patents reflect a strong commitment to research and development in the field of materials science.

Collaborations

Throughout his career, Jun has collaborated with talented individuals, including his coworkers Yoshitaka Kageyama and Keiichi Sakashita. These partnerships have fostered an environment of creativity and innovation, allowing for the development of cutting-edge technologies that benefit their industry.

Conclusion

Jun Nakauchi's dedication to enhancing acrylic polymers and resin compositions highlights his role as a key inventor in the field. His patented technologies not only improve product characteristics but also set new standards for durability and performance. As he continues to push the boundaries of polymer innovation at Mitsubishi Rayon Company, Limited, Nakauchi remains a notable figure in the landscape of materials science and engineering.

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