Isao Yamaguchi

Title: Isao Yamaguchi: Innovator in Colorant Technology

Introduction

Isao Yamaguchi is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of colorant technology, particularly in the development of innovative ink compositions. With a total of three patents to his name, Yamaguchi's work has had a substantial impact on the printing industry.

Latest Patents

Yamaguchi's latest patents include a phthalocyanine compound, a water-based ink composition, and a colored material. The phthalocyanine compound serves as a black colorant suitable for ink-jet recording inks. This compound is characterized by having both an acylamino group and a carboxyethylamino group, enhancing its effectiveness as a colorant. The resulting images produced with this colorant exhibit excellent light fastness and water fastness, making it particularly useful for printing barcodes that can be read in the near-infrared spectrum. Additionally, he has developed water-soluble trisazo compounds that provide high solubility and stability, allowing for printed images with high optical density and excellent resistance to water and light.

Career Highlights

Yamaguchi is currently associated with Nippon Kayaku Kabushiki Kaisha, where he continues to innovate in the field of colorants and inks. His work has not only advanced the technology but has also contributed to the efficiency and quality of printed materials.

Collaborations

Some of Yamaguchi's notable coworkers include Takashi Miyazawa and Toru Tabei. Their collaborative efforts have further enhanced the research and development of innovative ink solutions.

Conclusion

Isao Yamaguchi's contributions to colorant technology and ink compositions have established him as a key figure in the industry. His innovative patents reflect a commitment to advancing printing technology and improving the quality of printed materials.