Inventor
Ippo Hirai
Inventor
Yachiyo, JP
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Cprimary
C22CAlloys33%
H01FMagnets33%
H05KPrinted circuits17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
5,252,148'Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same'19935,207,841'Soft magnetic powder and magnetic shield composition'19934,923,533'Magnetic shield-forming magnetically soft powder, composition thereof, and process of making'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1993Patents assigned to TDK CORP (3)· patent assignee history
1990Patents assigned to TOKYO MAGNETIC PRINTING (1)· patent assignee history
1990–1993Based in Yachiyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TDK CORP | 3 | 1990–1993 |
| TOKYO MAGNETIC PRINTING | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yachiyo, JP | 3 | 1990–1993 |