Company Filing History:
2 out of 36,653 
2 out of 82 Years Active: 2006-2020
Title: Innovator Kazumi Ohtake: Pioneering Heat-Resistant Technologies
Introduction
Kazumi Ohtake is a prominent inventor based in Toyota, Japan, known for her contributions to the development of advanced materials in the manufacturing sector. With a total of two patents to her name, she has focused on innovations in heat-resistant materials and methods for die casting.
Latest Patents
Ohtake's latest patents showcase her expertise in metal and materials engineering. The first patent is for an "Austenitic Heat-Resistant Cast Steel and Method for Manufacturing the Same." This innovative steel includes a specific composition of elements, such as 0.1% to 0.6% by mass of Carbon (C), up to 3.0% by mass of Silicon (Si), and a significant portion of Nickel (Ni) and Chromium (Cr) that enhances its heat resistance. The unique matrix structure consists of austenite crystal grains interspersed with a ferrite phase, providing a balance of strength and durability.
The second patent covers a "Method of Die Casting Spheroidal Graphite Cast Iron." This method prevents the formation of chill crystals, which is critical for allowing fine spheroidal graphite crystallization while simultaneously avoiding internal defects. The process involves a specially designed die with heat insulation layers and a precise sequence of metal filling and solidification steps.
Career Highlights
Kazumi Ohtake has worked with renowned companies such as Toyota Motor Corporation and Aisin Takaoka Co., Ltd. Her roles at these organizations allowed her to apply her research on advanced casting methods and materials in practical applications, contributing significantly to technological advancements in the automotive and manufacturing industries.
Collaborations
Throughout her career, Ohtake has collaborated with esteemed colleagues including Takahiro Sato and Takamichi Ueda. These partnerships have fostered a creative environment, encouraging innovation and the pursuit of novel solutions in material science.
Conclusion
Kazumi Ohtake stands out as a leading inventor in the field of materials engineering, particularly with her focus on heat-resistant technologies. Through her patents and collaborations, she has made significant contributions that are paving the way for advancements in manufacturing processes, ultimately impacting various industries positively. Her work exemplifies the importance of innovation in driving progress and enhancing material performance.