Company Filing History:
2 out of 105 
2 out of 16 
1 out of 305 
Years Active: 1989-1992
Title: The Innovative Mind of Tsutomu Kado
Introduction: Tsutomu Kado, a notable inventor hailing from Kawagoe, Japan, has made significant contributions to the field of colorants and polyester fibers. With two patents to his name, Kado's work has paved the way for advancements in the coloring and manufacturing processes of polyester materials.
Latest Patents: Kado's latest patents focus on innovative solutions for heat-resistant colorants and dope-dyeing techniques for polyester fibers. One of his inventions, titled "Colorants, polyester fibers mass-colored therewith and process for," introduces a heat-resistant colorant designed for mass-coloring polyester, such as polyethylene terephthalate. This colorant comprises 100 parts of pigments and/or dyes blended with 42 to about 2,000 parts of a specific liquid aliphatic polyester dispersing medium. The medium, which possesses a viscosity not exceeding 150 poises at 25°C and a hydroxyl value not exceeding 25 mgKOH/g, enhances the blending and uniform dispersion of colorants in fiber-grade polyester without degrading the material. Another noteworthy innovation is the "Black liquid colorant and polyester fibers dope-dyed therewith,” a liquid colorant for dope dyeing polyester fibers. This black liquid colorant includes 5-50 wt% carbon black, providing a deep black hue with a bluish tone, ensuring neither polymer deterioration nor filament breakage during production.
Career Highlights: Throughout his career, Tsutomu Kado has been associated with prestigious companies, including Toyo Ink Manufacturing Co., Ltd. and Nippon Ester Co., Ltd. His experience in these organizations has contributed to his deep understanding of material science and color chemistry.
Collaborations: Kado has collaborated with esteemed colleagues, such as Fumio Hirota and Shosuke Oku, highlighting the importance of teamwork and shared expertise in driving innovation and developing new products.
Conclusion: Tsutomu Kado stands out as a significant figure in the field of colorant and polyester fiber innovation. His inventive patents not only enhance the quality of polyester materials but also demonstrate his commitment to advancing industrial processes. Through his contributions, Kado continues to inspire future innovations in the textile and material science industries.