Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6917096 | Semiconductor device and method of manufacturing substrate | Naoharu Sugiyama, Tsutomu Tezuka, Tomohisa Mizuno, Shinichi Takagi | 2005-07-12 |
| 6607948 | Method of manufacturing a substrate using an SiGe layer | Naoharu Sugiyama, Tsutomu Tezuka, Tomohisa Mizuno, Shinichi Takagi | 2003-08-19 |
| 6369438 | Semiconductor device and method for manufacturing the same | Naoharu Sugiyama | 2002-04-09 |
| 6326667 | Semiconductor devices and methods for producing semiconductor devices | Naoharu Sugiyama, Tomohisa Mizuno, Shinichi Takagi | 2001-12-04 |
| 6191432 | Semiconductor device and memory device | Naoharu Sugiyama | 2001-02-20 |
| 6157047 | Light emitting semiconductor device using nanocrystals | Shinobu Fujita | 2000-12-05 |
| 6060743 | Semiconductor memory device having multilayer group IV nanocrystal quantum dot floating gate and method of manufacturing the same | Naoharu Sugiyama, Tsutomu Tezuka, Riichi Katoh, Tetsufumi Tanamoto | 2000-05-09 |
| 5923046 | Quantum dot memory cell | Tsutomu Tezuka | 1999-07-13 |
| 5847419 | Si-SiGe semiconductor device and method of fabricating the same | Seiji Imai, Yoshiko Hiraoka, Naoharu Sugiyama, Tsutomu Tezuka | 1998-12-08 |
| 5432812 | Semiconductor laser device with multi-directional reflector arranged therein | Tsutomu Tezuka, Tetsuo Sadamasa, Mitsuhiro Kushibe, Yoshita Kawakyu | 1995-07-11 |
| 5304514 | Dry etching method | Tohru Nishibe, Shinya Nunoue | 1994-04-19 |
| 5253262 | Semiconductor laser device with multi-directional reflector arranged therein | Tsutomu Tezuka, Tetsuo Sadamasa, Mitsuhiro Kushibe, Yoshito Kawakyu | 1993-10-12 |
| 4810670 | Method of manufacturing an embedded type semiconductor laser | Hideto Furuyama | 1989-03-07 |
| 4701774 | Light emitting semiconductor device | Paul W. A. McIlroy, Hideto Furuyama | 1987-10-20 |