This inventor holds 10 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignees: Kyocera Document Solutions Inc., Kyocera Mita Corporation. Active years: 2012-2018.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
6 out of 6,349 
4 out of 1,131 
Years Active: 2012-2018
Title: Seishi Ojima: Innovator in Electrostatic Toner Technology
Introduction
Seishi Ojima is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of electrostatic latent image developing toners. With a total of 10 patents to his name, Ojima's work has advanced the technology used in printing and imaging.
Latest Patents
Ojima's latest patents focus on the development of electrostatic latent image developing toners. One of his notable inventions describes a composite core of a toner particle that includes a toner core made of polyester resin and multiple resin particles. These resin particles each contain a first resin, and a shell layer partially covers the composite core with a film made of a second resin. The first resin has a glass transition point that is 10°C or more higher than that of the second resin. The resin particles have a positive zeta potential at pH 4, which enhances the performance of the toner.
Another patent details an electrostatic latent image developing toner that consists of toner particles with a core and a shell layer. The toner core contains polyester resin, while the shell layer includes first and second resin particles with specific particle diameters and glass transition points. The invention specifies the percentage of the toner core covered by the first resin particles and the mass ratio of the second to the first resin particles, ensuring optimal performance in imaging applications.
Career Highlights
Throughout his career, Seishi Ojima has worked with notable companies such as Kyocera Document Solutions Inc. and Kyocera Mita Corporation. His experience in these organizations has allowed him to refine his expertise in toner technology and contribute to innovative solutions in the industry.
Collaborations
Ojima has collaborated with several professionals in his field, including Minoru Wada and Sayo Mabuchi. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Seishi Ojima's contributions to the field of electrostatic latent image developing toners have made a significant impact on imaging technology. His innovative patents and collaborations highlight his dedication to advancing this important area of research.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile