This inventor holds 1 USPTO granted patent. Top assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.). Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2026
Title: Ryohei Ihara: Resistance-Welding Innovation
Introduction
Ryohei Ihara is an inventor associated with Hyogo, Japan, and Kobe Steel, Ltd. His patent work addresses the production of resistance-welded members made from multiple steel sheets.
Latest Patents
Ihara is associated with 1 patent: “Method for Producing Resistance-Welded Member.” The method covers resistance welding three or more sheets, including a plated steel sheet. It uses a main energizing stage to form a nugget, followed by a stage in which the current gradually decreases while a greater compressive force is applied. The process then holds the electrode under that force. The patent also specifies conditions involving compressive force, total sheet thickness, compression rise delay time, downslope time, and electrode holding time.
Career Highlights
Ihara’s listed invention focuses on controlling current and compression during resistance welding. These process parameters are intended to support the production of welded members from multiple sheets.
Collaborations
Ihara is associated with Kobe Steel, Ltd. His listed coworker is Kyohei Maeda.
Conclusion
Ryohei Ihara’s patent reflects work on carefully controlled resistance-welding processes for multi-sheet steel members.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile