Location History:
- Katano, JP (1991 - 1994)
- Osaka, JP (1991 - 2024)
Company Filing History:
20 out of 6,064 
8 out of 1,344 Years Active: 1991-2024
Title: Masami Tsujihiro: A Pioneer in Magnetic Toner Innovations
Introduction
Masami Tsujihiro, based in Osaka, Japan, is a distinguished inventor boasting an impressive portfolio of 28 patents. His work primarily focuses on advancements in toner technology, impacting the field of printing and imaging significantly. Tsujihiro's innovative approach and technical expertise have positioned him as a leading figure in the industry.
Latest Patents
Among Tsujihiro's notable inventions are two recent patents related to magnetic toner. The first patent introduces a magnetic toner that comprises toner particles, each formed from a toner mother particle which consists of a polyester resin domain, a vinyl resin domain, and a magnetic powder. A unique feature of this toner is that the vinyl resin constituting the vinyl resin domain includes a repeating unit with a non-ring-opened oxazoline group. Furthermore, the surface area exposure of the vinyl resin domain within the toner mother particle is carefully regulated, ranging from 0.02% to 1.00%.
The second patent focuses on a toner that incorporates toner particles, which also consist of a toner mother particle containing a binder resin and a releasing agent. In this formulation, the binder resin is composed of a polyester resin along with a specific vinyl resin. The invention specifies a relationship that must be satisfied concerning the absolute and relative molecular weights of the binder resin, showcasing Tsujihiro's thorough understanding of the material's properties.
Career Highlights
Tsujihiro has amassed an extensive career working in prominent companies such as Kyocera Document Solutions Inc. and Mita Industrial Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute significantly to the development of innovative toner technologies.
Collaborations
Throughout his career, Masami Tsujihiro has collaborated with talented professionals, including his coworkers Ryotaro Komada and Jun Hioki. These partnerships have played a crucial role in driving innovation and enhancing product development within the realm of toner technology.
Conclusion
Masami Tsujihiro's contributions to the field of magnetic toner have established him as an outstanding inventor with a strong commitment to innovation. His 28 patents reflect a deep understanding of materials and their applications, positioning him at the forefront of the printing and imaging industry. As technology continues to evolve, Tsujihiro's work remains a significant milestone in the pursuit of high-quality toner solutions.
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.