Keiji Nakamoto

This inventor holds 9 USPTO granted patents. Top assignees: Nitto Electric Industrial Co., Ltd., Nitto-Denko Corporation. Active years: 1976-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Nakamoto. Retrieved from https://idiyas.com/inventor/keiji-nakamoto

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 5.1

ph-index = 9

Forward Citations = 250(Granted Patents)

Location History:

Toyohashi, JA (1976 - 1978)
Osaka, JP (1985 - 1998)

Company Filing History:

5 out of 172

Nitto Electric Industrial Co., Ltd.

patents

4 out of 3,946

Nitto-Denko Corporation

patents

Years Active: 1976-1998

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5728321 - Organic polymer, conducting organic polymer, production methods and uses (1998-03-17),

2. 5476565 - Dicing-die bonding film (1995-12-19),

3. 5304418 - Dicing-die bonding film (1994-04-19),

4. 5264552 - Organic polymer, conducting organic polymer, production methods and uses (1993-11-23),

5. 4615829 - Electroconductive organic polymer and method for producing the same (1986-10-07),

6. 4556623 - Electroconductive porous film and process for producing same (1985-12-03),

7. 4092452 - Plastic laminated metallic foil and method for preparing the same (1978-05-30),

8. 4049904 - Plastic laminated metallic foil and method for preparing the same (1977-09-20),

9. 3950605 - Metal foil-plastic laminate and method of preparing the same (1976-04-13),

Title: Keiji Nakamoto: Innovator in Conducting Organic Polymers

Introduction

Keiji Nakamoto is a prominent inventor based in Osaka, Japan, known for his significant contributions to the field of conducting organic polymers. With a total of nine patents to his name, Nakamoto has made remarkable advancements in materials science that have practical applications in various industries.

Latest Patents

Nakamoto's latest patents include innovations in organic polymers and dicing-die bonding films. One of his notable inventions is a conducting organic polymer formed by doping an organic polymer with a protonic acid that has a dissociation constant value pKa of less than 4.8. This polymer is characterized by its solubility in organic solvents in the undoped state and an intrinsic viscosity of more than 0.4 dl/g measured in N-methyl-2-pyrrolidone at 30°C. Additionally, he developed a dicing-die bonding film that features an ultraviolet-transmitting substrate with an ultraviolet-curable pressure-sensitive adhesive layer. This film is designed to support semiconductor wafers during dicing while allowing for easy release of cut chips.

Career Highlights

Throughout his career, Nakamoto has worked with notable companies such as Nitto Electric Industrial Co., Ltd. and Nitto-Denko Corporation. His work has significantly impacted the development of advanced materials used in electronics and other high-tech applications.

Collaborations

Nakamoto has collaborated with esteemed colleagues, including Masao Abe and Yutaka Hori, contributing to the advancement of innovative technologies in his field.

Conclusion

Keiji Nakamoto's contributions to the field of conducting organic polymers and his innovative patents highlight his role as a leading inventor in materials science. His work continues to influence various industries, showcasing the importance of innovation in technology.

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]