This inventor holds 4 USPTO granted patents and 2 EPO patents. Top assignees: Nippon Steel Corporation, Nippon Steel Sumitomo Metal Corporation, Yutaka Electric Mfg. Co., Ltd.. Active years: 1997-2014.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kawasaki, JP (1997)
- Tokyo, JP (2011 - 2014)
Company Filing History:
3 out of 3,727 
1 out of 1,102 
1 out of 10 Years Active: 1997-2014
Title: Keiji Iwata: Innovator in Electrical Steel Manufacturing
Introduction
Keiji Iwata is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electrical steel manufacturing, holding a total of 4 patents. His innovative approaches have advanced the technology used in producing grain-oriented electrical steel sheets.
Latest Patents
Iwata's latest patents include a method for manufacturing grain-oriented electrical steel sheets. This method involves forming a resist film on a cold-rolled steel sheet to fabricate a groove through etching. The resist film creates a steel sheet exposed portion with a first region oriented in the sheet width direction, along with several second regions. The widths of these regions range from 20 µm to 100 µm, with a distance of 60 µm to 570 µm between adjacent second regions. Another notable patent is for a low core loss grain-oriented electrical steel plate. This plate features grooves with widths of 10 µm to 200 µm and depths of 10 µm to 30 µm, positioned at intervals of 1 mm to 10 mm. The angle between the grooves and the rolling direction of the steel plate is between 60 degrees and 120 degrees, with tensile stresses of 20 MPa to 300 MPa acting in the rolling direction.
Career Highlights
Throughout his career, Iwata has worked with notable companies such as Nippon Steel Corporation and Yutaka Electric Manufacturing Co., Ltd. His experience in these organizations has allowed him to refine his expertise in electrical steel technology.
Collaborations
Iwata has collaborated with several professionals in his field, including Michihisa Murasato and Kenichi Tanigawa. These collaborations have contributed to the development of innovative solutions in electrical steel manufacturing.
Conclusion
Keiji Iwata's contributions to the field of electrical steel manufacturing are noteworthy. His patents and collaborations reflect his commitment to innovation and excellence in technology. His work continues to influence the industry and pave the way for future advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile