Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252148 | Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same | Masao Shigeta, Asako Kajita, Ippo Hirai | 1993-10-12 |
| 4923533 | Magnetic shield-forming magnetically soft powder, composition thereof, and process of making | Masao Shigeta, Hiroyoshi Shimizu, Ippo Hirai, Shohei Mimura, Atsushi Makimura +1 more | 1990-05-08 |