Inventor
Joo Ishihara
Inventor
Hitachi, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
Y10TTechnical subjects covered by former us classification18%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids9%
B21BRolling of metal9%
B22DCasting of metals9%
B22FWorking metallic powder9%
B23PMetal-working not otherwise provided for9%
C23CCoating metallic material9%
H10NElectric solid-state devices not otherwise provided for9%
PatentTitleYear
4,697,320'Roll for a rolling mill, method of producing the same and the rolling mill incorporating the roll'19874,668,591'Magnetic separator matrix of cut pieces of an elongated crystalline magnetic alloy'19874,560,404'Method of producing material for superconductor'19854,301,855'Apparatus for producing metal ribbon'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1987Patents assigned to HITACHI LTD (4)· patent assignee history
1981Patents assigned to HITACHI METALS LTD (1)· patent assignee history
1981Patents assigned to JAPAN RES DEV CORP (1)· patent assignee history
1981–1987Based in Hitachi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 4 | 1981–1987 |
| HITACHI METALS LTD | 1 | 1981 |
| JAPAN RES DEV CORP | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 4 | 1981–1987 |