This inventor holds 3 USPTO granted patents. Top assignees: Aichi Steel Works, Ltd., Koyo Seiko K.k., Nippondenso Co., Ltd.. Active years: 1989-1995.
Location History:
- Aichi, JP (1990)
- Chita, JP (1989 - 1995)
Company Filing History:
3 out of 58 
1 out of 1 
1 out of 3,252 
Years Active: 1989-1995
Title: Takao Ooki: Innovator in Bearing Steel Technology
Introduction
Takao Ooki is a notable inventor based in Chita, Japan, recognized for his contributions to the field of materials science, particularly in the development of advanced bearing steels. With a total of 3 patents to his name, Ooki has made significant strides in enhancing the performance and durability of steel used in various applications.
Latest Patents
Ooki's latest patents include a groundbreaking bearing steel designed to have a long rolling life. This steel composition comprises, by weight, 0.65 to 0.90% of carbon (C), 0.15 to 0.50% of silicon (Si), 0.15 to 1.0% of manganese (Mn), and 2.0 to 5.0% of chromium (Cr), with the balance being iron (Fe). The innovation lies in preventing the austenite grain size from becoming coarser, which allows for hardening at high temperatures. This is achieved by adding optional elements such as nitrogen (N), aluminum (Al), and niobium (Nb). Additionally, the rolling fatigue life can be improved by incorporating nickel (Ni), molybdenum (Mo), and vanadium (V) as optional elements. Another notable patent is for a free-cutting steel that boasts high fatigue strength, consisting of 0.30-0.50% C, 0.10-0.50% Si, 0.50-1.00% Mn, and other elements, ensuring both durability and machinability.
Career Highlights
Throughout his career, Takao Ooki has worked with prominent companies such as Aichi Steel Works, Ltd. and Koyo Seiko Co., Ltd. His experience in these organizations has allowed him to refine his expertise in steel manufacturing and innovation.
Collaborations
Ooki has collaborated with notable colleagues in the industry, including Yoshihiro Wakikado and Itie Nomura. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.
Conclusion
Takao Ooki's innovative work in bearing steel technology has significantly impacted the materials science field. His patents reflect a commitment to enhancing the performance and longevity of steel products. Through his career and collaborations, Ooki continues to be a