Inventor
Akihisa Obata
Inventor
Hitachinaka, JP
Overview
Patents· 5 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 transducer33%
B21BRolling of metal22%
C21DModifying the physical structure of ferrous metals22%
C22CAlloys22%
PatentTitleYear
10,837,080Rolled steel bar or rolled wire rod for cold-forged component202010,829,842Rolled steel bar or rolled wire rod for cold-forged component20207,092,187'Magnetic recording and reproducing apparatus and method and thin film magnetic head used therein'20066,757,123'Method and apparatus for cleaning a magneto-resistive head'20046,654,194'High reliability magneto-resistive head cleaning system'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003–2006Patents assigned to HITACHI LTD (2)· patent assignee history
2003–2006Based in Hitachinaka, JP· patent location history
2004Patents assigned to EXABYTE CORP (1)· patent assignee history
2020Patents assigned to NIPPON STEEL CORP (2)· patent assignee history
2020Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 2 | 2003–2006 |
| NIPPON STEEL CORP | 2 | 2020 |
| EXABYTE CORP | 1 | 2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachinaka, JP | 3 | 2003–2006 |
| Tokyo, JP | 2 | 2020 |