Company Filing History:
Years Active: 2006
Title: Takaaki Dohmaru: Innovator in SiC Fiber Production
Introduction
Takaaki Dohmaru is a notable inventor based in Kawachinagano, Japan. He has made significant contributions to the field of materials science, particularly in the production of silicon carbide (SiC) fibers. His innovative approach has implications for various applications, especially in composite materials.
Latest Patents
Dohmaru holds a patent for a process for producing reinforcing SiC fiber for SiC composite material. The patent describes a method where a mixed polymer liquid is prepared by combining a polycarbosilane-dissolved organic solvent with poly(methylsilane). This mixture is moderated to a viscosity of 5–20 Pa·s through heat treatment, which promotes a partial cross-linking reaction. The mixed polymer is then melt-spun into fiber at temperatures ranging from 250–350°C. The fiber undergoes curing at 100–200°C in an oxidizing atmosphere and is subsequently baked at 1000°C or higher. This innovative process allows for continuous melt-spinning of SiC fiber without breakage, resulting in fibers that are excellent for reinforcing SiC composites, known for their toughness, strength, and heat resistance.
Career Highlights
Dohmaru is associated with the Japan Science and Technology Corporation, where he has been able to apply his expertise in materials science. His work has led to advancements in the production of high-performance fibers, which are crucial for various industrial applications.
Collaborations
Dohmaru has collaborated with notable colleagues such as Kiyohito Okamura and Masaki Narisawa. Their combined efforts have contributed to the development of innovative materials and processes in the field.
Conclusion
Takaaki Dohmaru's contributions to the field of SiC fiber production highlight his role as an innovator in materials science. His patented process not only enhances the production efficiency of SiC fibers but also improves their performance in composite materials.