This inventor holds 32 USPTO granted patents and 8 published patent applications, plus 15 CIPO patents and 29 EPO patents, primarily in Steel Materials Engineering. Top assignees: Jfe Steel Corporation, Kawasaki Steel Corporation, Ntn Corporation. Active years: 2000-2024.
Location History:
- Okayama, JP (2002)
- Kurashiki, JP (2000 - 2018)
- Kawasaki, JP (2019)
- Tokyo, JP (2010 - 2024)
Company Filing History:
28 out of 1,961 
3 out of 1,256 
2 out of 2,495 
Years Active: 2000-2024
Areas of Expertise:
Title: **Kazukuni Hase: Innovator in Steel Material Technologies**
Introduction
Kazukuni Hase is a prominent inventor based in Tokyo, Japan, with a remarkable portfolio of 32 patents to his name. His work primarily focuses on the development and production of advanced steel materials used in line pipes, illustrating a significant contribution to the field of metallurgy and material science.
Latest Patents
Among Hase's latest innovations are two pivotal patents concerning steel materials for line pipes. The first patent details a method for producing a steel material that involves heating a specific composition of steel to a temperature range of 1000° C. to 1200° C. Following this, the process includes hot rolling with a cumulative rolling reduction ratio exceeding 60% in a non-recrystallization temperature range, and a ratio of 50% or more in critical temperature ranges. Accelerated cooling is then applied, achieving a cooling rate of 10° C./s or more, ensuring that the steel material exhibits a tensile strength of 570 MPa or more and a compressive strength of 440 MPa or more.
The second patent builds upon the first, reinforcing the rigorous methodology for producing steel with a thickness of 30 mm or more. Hase's techniques ensure that the steel undergoes heating, rolling, cooling, and reheating processes meticulously designed to optimize its mechanical properties.
Career Highlights
Throughout his career, Kazukuni Hase has played impactful roles in notable companies such as JFE Steel Corporation and Kawasaki Steel Corporation. His tenure in these institutions has been marked by significant innovations that align with industry demands for higher performance materials.
Collaborations
Hase has collaborated with esteemed colleagues like Katsuyuki Ichimiya and Yusuke Terazawa, contributing to joint initiatives aimed at enhancing steel production processes and overall material quality. Their shared expertise has undoubtedly accelerated advancements in steel technology within their respective organizations.
Conclusion
Kazukuni Hase's innovative contributions to steel material technologies underline his status as a leading inventor in the field. With a proven track record supported by numerous patents, his methodologies continue to influence the steel industry, ensuring the availability of high-performance materials critical for modern infrastructure.