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For the Inventor, By the Inventor

Yokkaichi, Japan

Tatsuaki Matsunaga

This inventor holds 3 USPTO granted patents. Top assignee: Japan Synthetic Rubber Co., Ltd.. Active years: 1986-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuaki Matsunaga. Retrieved from https://idiyas.com/inventor/tatsuaki-matsunaga

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

Calculating rank
USPTO Granted Patents = 3

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 3

Forward Citations = 30(Granted Patents)


Company Filing History:

goldMedal3 out of 377 
 
Japan Synthetic Rubber Co., Ltd.
 patents

Years Active: 1986-1991

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3 patents (USPTO):Explore Patents
1. 4985513 - Conjugated diene copolymer, process for producing the same, and (1991-01-15),
2. 4927738 - Conjugated diene copolymer, process for producing the same, and (1990-05-22),
3. 4632960 - Resin composition comprising a thermosetting resin component and a (1986-12-30),

Title: Tatsuaki Matsunaga: Innovator in Conjugated Diene Copolymers

Introduction

Tatsuaki Matsunaga is a notable inventor based in Yokkaichi, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the development of conjugated diene copolymers. With a total of 3 patents to his name, Matsunaga's work has implications for various applications in materials science.

Latest Patents

Matsunaga's latest patents focus on a conjugated diene copolymer and the process for producing it. The copolymer comprises (A) 40 to 90 mole % of a conjugated diene component, (B) 0.5 to 10 mole % of an alpha, beta-ethylenically unsaturated carboxylic acid component, (C) 0.1 to 5 mole % of a polyfunctional alkenyl compound component, and (D) 5 to 58 mole % of a monoolefinically unsaturated compound component. The intrinsic viscosity of the copolymer, measured at 30°C in dimethylformamide, ranges from 0.01 to 3.0 dl/g. The width of the endothermic transition temperature section, determined by differential scanning calorimetry, is between 45°C to 120°C, with the limit temperature on the lower side being -40°C or less. This innovative copolymer, when combined with a photopolymerizable unsaturated monomer and a photosensitizer, results in a photosensitive resin composition that is soluble in aqueous alkali solutions. It exhibits excellent processability, photocurability, rubber elasticity, transparency after curing, and water resistance.

Career Highlights

Matsunaga is associated with Japan Synthetic Rubber Co., Ltd., where he has been instrumental in advancing polymer technologies. His expertise in conjugated diene copolymers has positioned him as a key figure in the industry.

Collaborations

Throughout his career, Matsunaga has collaborated with notable colleagues, including Shin-ichiro Iwanaga and Hiroji Enyo. These partnerships have further enriched his research and development efforts.

Conclusion

Tatsuaki Matsunaga's contributions to the field of polymer chemistry, particularly through his innovative

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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