Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440324 | Method for manufacturing piezoelectric ceramic composition, piezoelectric resonator, piezoelectric transformer and piezoelectric actuator, and piezoelectric laminated sintered body | Koichi Hayashi, Akira Ando, Toshikatsu Hisaki, Yuji Yoshikawa | 2002-08-27 |
| 6364947 | Method and apparatus for manufacturing a silicon single crystal having few crystal defects, and a silicon single crystal and silicon wafers manufactured by the same | Makoto Iida, Eiichi Iino, Shozo Muraoka, Hideki Yamanaka | 2002-04-02 |
| 6348180 | Silicon single crystal wafer having few crystal defects | Makoto Iida, Satoshi Suzuki, Eiichi Iino, Shozo Muraoka | 2002-02-19 |
| 6334896 | Single-crystal silicon wafer having few crystal defects and method for manufacturing the same | Makoto Iida, Shozo Muraoka | 2002-01-01 |