Location History:
- Sohwa, JP (1983)
- Kanagawa, JP (1984 - 1991)
Company Filing History:
3 out of 44 
1 out of 2,560 
Years Active: 1983-1991
Title: Sadao Kawashima: Innovator in Fiber-Reinforced Materials
Introduction
Sadao Kawashima is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of fiber-reinforced materials, holding a total of four patents. His work focuses on innovative materials that enhance the performance and application of composite structures.
Latest Patents
Kawashima's latest patents include a fiber-reinforced resin material and a core material for fiber-reinforced plastic. The fiber-reinforced resin material is designed in a tape shape with a thickness of at most 0.2 mm and a width/thickness ratio ranging from 25 to 200. This material comprises a synthetic resin and continuous filaments aligned in the lengthwise direction, with the resin densely filling the spaces among the filaments. The core material for fiber-reinforced plastic consists of a glass fiber mat with a bulk density of 50 to 150 kg/m³, filled with a porous material made from a mixture of thermoplastic resin and a hollow inorganic filler.
Career Highlights
Throughout his career, Sadao Kawashima has worked with prominent companies such as Asahi Fiber Glass Company, Limited and Asahi Glass Company, Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of materials science.
Collaborations
Kawashima has collaborated with notable coworkers, including Takashi Sonoh and Yasutaka Sakumoto. Their combined expertise has contributed to advancements in the development of fiber-reinforced materials.
Conclusion
Sadao Kawashima's contributions to the field of fiber-reinforced materials demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving material performance and expanding their applications in various industries.