Inventor
Rensei Futatsuka
Inventor
Aizuwakamatsu, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Cprimary
C22CAlloys41%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1029%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form6%
C23CCoating metallic material6%
H01BCables6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
5,997,810'High-strength copper based alloy free from smutting during pretreatment for plating'19995,885,376'Corrosion-resistant high-strength copper based alloy having excellent blankability'19995,667,752'Copper alloy sheet for connectors and connectors formed of same'19975,510,197'Lead frame material and lead frame for semiconductor device'19965,463,247'Lead frame material formed of copper alloy for resin sealed type semiconductor devices'19954,877,577'Copper alloy lead frame material for semiconductor devices'19894,750,029'Copper base lead material for leads of semiconductor devices'19884,668,471'Copper alloy lead material for leads of a semiconductor device'19874,249,941'Copper base alloy for leads of integrated circuit'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to TAMAGAWA KIKAI KINZOKU KK (1)· patent assignee history
1981–1999Based in Aizuwakamatsu, JP· patent location history
1987–1999Patents assigned to MITSUBISHI SHINDO KK (8)· patent assignee history
1989Based in both of, JP· patent location history
1999Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI SHINDO KK | 8 | 1987–1999 |
| TAMAGAWA KIKAI KINZOKU KK | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Aizuwakamatsu, JP | 7 | 1981–1999 |
| Tokyo, JP | 1 | 1999 |
| both of, JP | 1 | 1989 |