Location History:
- Kamifukuoka, JP (1990 - 1994)
- Oi, JP (1994 - 1996)
Company Filing History:
Years Active: 1990-1996
Title: The Innovations of Sadahisa Wada
Introduction
Sadahisa Wada is a notable inventor based in Kamifukuoka, Japan. He has made significant contributions to the field of materials science, particularly in the development of hybrid prepregs and epoxy resin compositions. With a total of six patents to his name, Wada's work has advanced the capabilities of fiber-reinforced composites.
Latest Patents
One of Wada's latest patents is a method of making a hybrid prepreg. This invention relates to a hybrid prepreg that incorporates reinforcing carbon fibers and foreign fibers. The carbon fibers are unidirectionally arranged and have a diameter ranging from 5 to 30 microns. The foreign fibers can be single monofilaments with diameters between 50 to 150 microns or strands formed by bundling multiple monofilaments with diameters ranging from 5 to 50 microns. The strands, if used, have a conversion diameter of less than 500 microns. The foreign fibers are arranged in the same direction as the carbon fibers and are positioned near the center of the prepreg. Additionally, Wada has developed an epoxy resin composition that serves as a matrix for fiber-reinforced composites. This composition includes a mixture of tetrafunctional epoxy resin, trifunctional epoxy resin oligomers, and bisphenol A epoxy resin.
Career Highlights
Throughout his career, Sadahisa Wada has worked with prominent companies such as Tonen Corporation and Toa Nenryo Kogyo Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in materials development and innovation.
Collaborations
Wada has collaborated with notable individuals in his field, including Hiroshi Inoue and Osamu Watanabe. These partnerships have likely enhanced his research and development efforts.
Conclusion
Sadahisa Wada's contributions to the field of materials science, particularly through his patents on hybrid prepregs and epoxy resin compositions, demonstrate his innovative spirit and commitment to advancing technology. His work continues to influence the development of advanced composite materials.