Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6677056 | Method for producing tin-silver alloy plating film, the tin-silver alloy plating film and lead frame for electronic parts having the plating film | Hisahiro Tanaka | 2004-01-13 |
| 6646330 | Lead frame for semiconductor device, process for producing the same and semiconductor device using the same | Takashi Kubara, Hisahiro Tanaka, Tsuyoshi Tokiwa | 2003-11-11 |
| 6575354 | Method for producing tin-silver alloy plating film, the tin-silver alloy plating film and lead frame for electronic parts having the film | Hisahiro Tanaka, Tsuyoshi Tokiwa | 2003-06-10 |
| 6395583 | Semiconductor device with a coating of Pb-free Sn-base solder and manufacturing method therefor | Takashi Kubara, Tsuyoshi Tokiwa, Hisahiro Tanaka | 2002-05-28 |
| 6087714 | Semiconductor devices having tin-based solder film containing no lead and process for producing the devices | Takashi Kubara, Tsuyoshi Tokiwa, Hisahiro Tanaka | 2000-07-11 |