Location History:
- Amagasaki, JP (1983)
- Ibaraki, JP (1987 - 1991)
Company Filing History:
3 out of 929 
1 out of 12 
1 out of 776 
Years Active: 1983-1991
Title: Tohru Iwahashi: Innovating Carbon Material Refinement
Introduction
Tohru Iwahashi, an accomplished inventor based in Ibaraki, Japan, has significantly contributed to the field of carbon materials through his innovative patents. With a total of three patents to his name, Iwahashi's work primarily focuses on refining coal-derived heavy carbonaceous materials and manufacturing high-strength carbon products.
Latest Patents
Iwahashi's latest patents showcase his expertise in this niche. One of his patents outlines a novel process for refining coal-derived heavy carbonaceous materials. The process involves removing insolubles from pitch, heating the material until it becomes fluid, and mixing it with a ketone solvent to precipitate coarse insoluble particles. Upon separating these particles and removing the solvent, a refined carbon material suitable for high-grade applications such as needle coke and carbon fibers is produced.
In a second patent, he details a method for manufacturing high-strength, high-density carbon materials. This method requires pulverizing a carbonaceous raw material with a carbon content of at least 92%. The procedure includes molding and baking while allowing for the addition of organic fibers to enhance the final product's robustness.
Career Highlights
Tohru Iwahashi has collaborated with prominent companies including Sumitomo Metal Industries, Inc. and Sumikin Chemical Co., Ltd. Through his roles in these organizations, he has honed his skills and increased his contributions to the carbon materials sector.
Collaborations
During his career, Iwahashi has partnered with notable colleagues such as Yoshihiko Sunami and Tadashi Miyamura. Together, they have pushed the boundaries of what's possible in carbon material innovation, contributing to developments that support a wide range of industrial applications.
Conclusion
In summary, Tohru Iwahashi stands as a pivotal figure in the development of advanced carbon materials. His patents not only add to the scientific community's understanding of carbon refinement processes but also pave the way for future innovations in material manufacturing. With each invention, Iwahashi continues to impact industries that rely on high-quality carbon products, solidifying his legacy as an influential inventor.