Location History:
- Hitachi, JP (2012 - 2021)
- Tokyo, JP (2007 - 2022)
Company Filing History:
3 out of 2,333 
2 out of 2,510 
1 out of 836 
Years Active: 2007-2022
Title: Innovations of Takeshi Usami in Aluminum and Copper Alloys
Introduction
Takeshi Usami is a prominent inventor based in Tokyo, Japan, known for his contributions to the field of materials science, particularly in aluminum and copper alloys. With a total of 6 patents to his name, Usami has made significant advancements that enhance the properties and manufacturing processes of these materials.
Latest Patents
Among his latest patents is the invention of an aluminum alloy wire rod and the method for producing it. This wire rod is composed of an aluminum alloy that includes Al crystal grains, an Al-Zr compound, and either an Al-Co-Fe or Al-Ni-Fe compound. The unique structure of this alloy features high-angle tilt crystal grain boundaries with a difference in crystal orientations of 15 degrees or more, as well as low-angle tilt boundaries with a difference of 2 to 15 degrees. The average grain diameter of the Al crystal grains surrounded by high-angle boundaries is 12 µm or more, while those surrounded by both high-angle and low-angle boundaries average 10 µm or less. Another notable patent involves an alloying-element additive designed for manufacturing copper alloys. This additive consists of a wire-shaped or plate-shaped core that includes an alloy element, covered by an outer layer of copper. The weight ratio of copper to the alloy element is carefully controlled to ensure a liquid phase in the temperature range below the melting point of copper.
Career Highlights
Takeshi Usami has worked with several reputable companies throughout his career, including Hitachi Metals, Ltd. and Ebara Corporation. His experience in these organizations has allowed him to refine his expertise in materials science and contribute to innovative projects.
Collaborations
Usami has collaborated with notable colleagues such as Toru Sumi and Takashi Hayasaka, further enhancing his work in the field of alloy development.
Conclusion
Takeshi Usami's innovative work in aluminum and copper alloys has led to significant advancements in material properties and manufacturing techniques. His contributions continue to influence the industry and pave the way for future innovations.