Company Filing History:
Years Active: 1985-1997
Title: Tsuneo Tatsuno: Innovator in Silicon Nitride Production
Introduction
Tsuneo Tatsuno is a distinguished inventor hailing from Kobe, Japan. With a remarkable portfolio comprising six patents, Tatsuno has significantly contributed to the field of materials science, particularly in the production of high-density silicon nitride.
Latest Patents
One of Tatsuno's latest inventions is a method for producing high-density sintered silicon nitride (Si₃N₄) with a relative density of at least 98%. The process involves a three-step approach. Initially, silicon nitride powder is compacted into a desired shape. Subsequently, in a second step, it is pre-sintered under normal pressure to achieve a relative density of at least 92%. The final step entails subjecting the presintered body to hot isostatic pressing (HIP) in an inert gas atmosphere at temperatures ranging from 1500°C to 2100°C, while maintaining a nitrogen gas partial pressure of at least 500 atm. This innovative method allows for the creation of high-density sintered Si₃N₄ in complex configurations without requiring any capsules during presintering. Notably, the use of a Y₂O₃–Al₂O₃–MgO system as a sintering aid enhances the properties of the resultant material. Moreover, a heat treatment step post-HIP improves the strength of the sintered Si₃N₄, while maintaining a temperature above 500°C for a designated duration contributes to energy efficiency and reduces production cycles.
Career Highlights
Throughout his career, Tsuneo Tatsuno has worked with notable companies, including Kabushiki Kaisha Kobe Seiko Sho and Kabushiki Kaisha Seiko Sho. His professional journey reflects a commitment to advancing material science and engineering, demonstrating his prowess in innovation and invention.
Collaborations
Tatsuno has collaborated with esteemed colleagues such as Hiroshi Okada and Katuhiko Honma. These partnerships have fostered a conducive environment for research and development, further enhancing the impact of their collective work in the industry.
Conclusion
Tsuneo Tatsuno stands out as a prominent figure in the field of silicon nitride production, with his innovative methods poised to make significant contributions to various applications. His work continues to inspire future innovations in materials science, underlining the importance of inventors in shaping technological advancements.
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