Location History:
- Narita-shi, Chiba-ken JP (1990)
- Nagoya, JP (1991 - 1994)
- Aichi, JP (1994)
Company Filing History:
3 out of 198 
2 out of 832,912 Years Active: 1990-1994
Title: Kenji Oshima: Innovator in Ceramic Composite Materials
Introduction
Kenji Oshima is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of ceramic composite materials, holding a total of 4 patents. His innovative work focuses on enhancing the strength and toughness of materials through advanced composite techniques.
Latest Patents
Oshima's latest patents include a carbon fiber reinforced silicon nitride based nanocomposite material. This material is produced by mixing a powder mixture of silicon nitride powders, with or without alumina powders, and fine silicon carbide powders. The process involves using a solution of a preceramic polymer containing silicon and nitrogen to create an impregnation solution. Carbon fibers are passed through this solution to produce a mass of impregnated fibers, which is then shaped and sintered in an inert atmosphere. The resulting material exhibits ultra-high strength and toughness due to the reinforcement provided by nanocompositization of the matrix phase.
Another notable patent is a method for producing a fiber-reinforced ceramic composite material. This composite is reinforced by particle dispersion and features improved fracture toughness. It consists of a mullite matrix with fibers and ceramic fine particles dispersed within it. The production method includes dispersing mullite particles in a solution of an organometallic macromolecular substance, impregnating the fibers, and performing sintering in an inert gas or nitrogen gas. This innovative approach achieves a fracture toughness of K.sub.Ic of 10 MN/m.sup.3/2 or more.
Career Highlights
Throughout his career, Kenji Oshima has worked with notable companies, including Noritake Co., Ltd. His expertise in ceramic materials has positioned him as a key figure in the development of advanced composite technologies.
Collaborations
Oshima has collaborated with esteemed colleagues such as Misao Iwata and Kikuo Nakano. Their combined efforts have contributed to the advancement of ceramic composite materials.
Conclusion
Kenji Oshima's innovative work in ceramic composite materials has led to significant advancements in the field. His patents reflect a commitment to enhancing material properties through cutting-edge techniques. Oshima's contributions continue to influence the development of stronger and more durable materials in various applications.