Location History:
- Hiroshima-ken, JP (2005)
- Hiroshima, JP (2013 - 2024)
- Aki-gun, JP (2024)
Company Filing History:
15 out of 4,680 
1 out of 827 
Years Active: 2005-2025
Title: The Innovative Contributions of Tsutomu Shigenaga
Introduction
Tsutomu Shigenaga is a prominent inventor based in Hiroshima, Japan. He has made significant contributions to the field of corrosion resistance, holding a total of 15 patents. His work focuses on developing methods and apparatuses that enhance the durability of coated metal members.
Latest Patents
Shigenaga's latest patents include a corrosion-resistance testing method for coated metal members, a corrosion-resistance testing apparatus for coated metal members, and a corrosion-resistance testing program for coated metal members. One notable patent describes a method for testing corrosion resistance that involves applying a voltage and/or current between the surface treatment coating and the metallic substrate. This method measures the temporal change in current and/or voltage to evaluate the defect occurrence status of the surface treatment coating. Additionally, he has developed a damaged portion treatment method and device for treating damaged areas in coated metal materials, which includes steps for electrically connecting electrodes to the metal base and supplying current to facilitate repair.
Career Highlights
Throughout his career, Tsutomu Shigenaga has worked with notable companies such as Mazda Motor Corporation and Nippon Paint Company, Ltd. His experience in these organizations has contributed to his expertise in corrosion resistance technologies.
Collaborations
Shigenaga has collaborated with several professionals in his field, including Teruaki Asada and Katsunobu Sasaki. Their combined efforts have further advanced the innovations in corrosion resistance.
Conclusion
Tsutomu Shigenaga's contributions to the field of corrosion resistance through his patents and collaborations highlight his importance as an inventor. His work continues to influence the industry and improve the longevity of coated metal materials.