Inventor
Hiromasa Isono
Inventor
Yokohama, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer23%
B22FWorking metallic powder15%
C22CAlloys15%
H01FMagnets15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
Y10TTechnical subjects covered by former us classification15%
PatentTitleYear
4,580,966'Orientation processing device for magnetic particles on disc-shaped magnetic recording medium'19864,317,675'Magnetic iron powder containing molybdenum'19824,315,052'Magnetic recording medium'19824,167,582'Magnetic metallic powder containing iron and magnetic recording medium using same powder'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–1986Patents assigned to VICTOR COMPANY OF JAPAN (4)· patent assignee history
1979–1982Based in Yokohama, JP· patent location history
1986Based in Atsugi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| VICTOR COMPANY OF JAPAN | 4 | 1979–1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 3 | 1979–1982 |
| Atsugi, JP | 1 | 1986 |