Inventor
Tatsushi Aizawa
Inventor
Ibaraki, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B22Dprimary
B22DCasting of metals27%
B22CFoundry moulding13%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact13%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
B01DSeparation7%
C22CAlloys7%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
4,723,590'Continuous casting apparatus of twin-drum type'19884,561,488'Method of and apparatus for continuously casting metal strip'19854,285,385'Method for the production of heat exchangers'19814,235,277'Method of forming three-dimensional network porous metallic structure having continuous internal cavity'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1988Patents assigned to HITACHI LTD (4)· patent assignee history
1980Based in Chiyoda-ku, JP· patent location history
1981Based in Shimoinayoshi, JP· patent location history
1985–1988Based in Ibaraki, JP· patent location history
1988Patents assigned to NISSHIN STEEL CO LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 4 | 1980–1988 |
| NISSHIN STEEL CO LTD | 1 | 1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaraki, JP | 2 | 1985–1988 |
| Shimoinayoshi, JP | 1 | 1981 |
| Chiyoda-ku, JP | 1 | 1980 |