Location History:
- Ohmuta, JP (1987)
- Omuta, JP (1991)
- Fukuoka, JP (1992)
- Yokohama, JP (1995 - 1998)
- Kanagawa-ken, JP (1997 - 2000)
- Chiba, JP (2004)
- Kanagawa, JP (2006)
Company Filing History:
12 out of 1,379 
6 out of 1,786 
6 out of 72 Years Active: 1987-2006
Title: Ryu Oi: Innovator in Ink Technology
Introduction
Ryu Oi is a prominent inventor based in Yokohama, Japan, known for his significant contributions to ink technology. With a total of 18 patents to his name, he has made remarkable advancements in the field of aqueous inks for ink-jet recording systems. His innovative work has greatly influenced the quality and performance of ink products used in various applications.
Latest Patents
Among his latest patents, Ryu Oi has developed a yellow hue compound and an aqueous ink for ink-jet recording systems. This aqueous ink contains at least a water-insoluble coloring matter, water, and a resin as its main components. The ink takes the form of an emulsion, featuring at least one yellow hue coloring matter selected from a group that includes a quinophthalone compound and a pyridone azo compound. This ink is designed to provide excellent light resistance and storage stability, enabling the formation of high-quality images without blotting. Additionally, the resulting recorded images exhibit outstanding water resistance, making it a valuable product for ink-jet recording applications.
Career Highlights
Ryu Oi has had a distinguished career, working with notable companies such as Mitsui Toatsu Chemicals, Incorporated and Mitsui Chemicals, Inc. His experience in these organizations has allowed him to refine his expertise in ink technology and contribute to the development of innovative products.
Collaborations
Throughout his career, Ryu Oi has collaborated with talented individuals, including Yoriaki Matsuzaki and Hisato Itoh. These collaborations have fostered a creative environment that has led to the successful development of new technologies in the ink industry.
Conclusion
Ryu Oi's contributions to ink technology through his patents and collaborations have established him as a key figure in the field. His innovative work continues to influence the quality and performance of ink products, showcasing the importance of creativity and research in advancing technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.