Company Filing History:
Years Active: 1990-1991
Title: Innovations of Yoshihito Sema in Magnetic Carbon Black Production
Introduction
Yoshihito Sema is a notable inventor based in Gotenba, Japan. He has made significant contributions to the field of materials science, particularly in the production of magnetic carbon black. With a total of 2 patents to his name, Sema's work has implications for various industrial applications.
Latest Patents
Sema's latest patents focus on methods for producing magnetic carbon black. The first patent describes a process where a hydrocarbon is introduced into a high-temperature combustion gas stream, along with an organic transition metal compound and oxygen gas. This innovative approach allows for the preparation of carbon black with specific particle sizes, enhancing its magnetic characteristics. The second patent elaborates on similar processes, emphasizing the importance of controlling the average particle diameter of the magnetic fine particles and carbon black. The magnetic properties can be further enhanced by heating the carbon black in a non-oxidizing atmosphere at temperatures ranging from 400°C to 900°C.
Career Highlights
Yoshihito Sema is currently associated with Tokai Carbon Company, Ltd., where he continues to advance his research and development efforts. His work has positioned him as a key figure in the field of carbon materials, particularly in enhancing the functionality of carbon black.
Collaborations
Sema has collaborated with notable colleagues such as Toshio Nakada and Fumio Takemura. Their combined expertise has contributed to the successful development of innovative processes in carbon black production.
Conclusion
Yoshihito Sema's contributions to the field of magnetic carbon black production highlight his innovative spirit and dedication to advancing material science. His patents reflect a deep understanding of the processes involved, paving the way for future advancements in this area.