Company Filing History:
1 out of 61 
1 out of 195 Years Active: 1995
Title: Kiyomi Okada: Innovator in Heat-Sensitive Recording Materials
Introduction
Kiyomi Okada is a notable inventor based in Osaka, Japan. She has made significant contributions to the field of heat-sensitive recording materials, holding 2 patents that showcase her innovative spirit and technical expertise.
Latest Patents
One of her latest patents is a heat-sensitive recording material that features a base sheet with a heat-sensitive recording layer. This layer comprises a colorless or pale colored basic chromogenic material and a color developer. The recording layer includes at least one fluoran derivative that develops a black color and at least one azaphthalide derivative, represented by a specific formula, as the basic chromogenic material. Additionally, it contains at least one diphenylsulfone derivative as the color developer. The azaphthalide derivative is utilized in an amount ranging from 3 to 50% by weight based on the fluoran derivative.
Another significant patent is a method for preparing a heat-sensitive recording material. This method ensures that a uniform protective layer is formed on the heat-sensitive recording layer, which is situated on a base sheet made of plastic film or synthetic paper. The process is designed to avoid the generation of bar-lines, streaks, or scratches. The protective layer is applied after adjusting the Bekk smoothness of the heat-sensitive recording layer to a specific range, ensuring high-quality results.
Career Highlights
Kiyomi Okada has worked with prominent companies in the industry, including Kanzaki Paper Mfg. Co., Ltd. and Kanzaki Paper Manufacturing Co., Ltd. Her work has significantly impacted the development of heat-sensitive materials, making her a key figure in this specialized field.
Collaborations
Throughout her career, Kiyomi has collaborated with notable colleagues such as Gensuke Matoba and Masanori Ohashi. These partnerships have contributed to her innovative projects and advancements in technology.
Conclusion
Kiyomi Okada's contributions to heat-sensitive recording materials highlight her role as an influential inventor. Her patents reflect her dedication to innovation and her impact on the industry.