Inventor
Seizi Hattori
Inventor
Ibaragi, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Fprimary
H01FMagnets35%
C23CCoating metallic material18%
G11BInformation storage based on relative movement between record carrier and transducer18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
H01LSemiconductor devices6%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h106%
PatentTitleYear
11,037,863Semiconductor device20214,232,071'Method of producing magnetic thin film'19804,232,061'Magnetic recording medium and process for producing the same'19804,215,158'Magnetic recording medium and process for producing the same'19804,156,037'Process for producing a magnetic recording medium'19794,013,534'Method of making a magnetic oxide film'19774,003,813'Method of making a magnetic oxide film with high coercive force'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1980Patents assigned to NIPPON TELEGRAPH & TELEPHONE (5)· patent assignee history
1977–1980Based in Tomobe, JP· patent location history
1977Based in Asahi-mura, JP· patent location history
1979–1980Patents assigned to FUJITSU LTD (3)· patent assignee history
1979–1980Based in Ibaragi, JP· patent location history
1980Based in Nishiibaragi, JP· patent location history
2021Patents assigned to TOSHIBA ELECTRONIC DEVICES & STORAGE CORP (1)· patent assignee history
2021Patents assigned to TOSHIBA KK (1)· patent assignee history
2021Based in Ibo-gun, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON TELEGRAPH & TELEPHONE | 5 | 1977–1980 |
| FUJITSU LTD | 3 | 1979–1980 |
| TOSHIBA ELECTRONIC DEVICES & STORAGE CORP | 1 | 2021 |
| TOSHIBA KK | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaragi, JP | 2 | 1979–1980 |
| Tomobe, JP | 2 | 1977–1980 |
| Ibo-gun, JP | 1 | 2021 |
| Nishiibaragi, JP | 1 | 1980 |
| Asahi-mura, JP | 1 | 1977 |