Issued Patents 2004
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830740 | Method for producing solar cell and solar cell | Konomu Oki | 2004-12-14 |
| 6824869 | Polyester type conjugate fiber package | Tadashi Koyanagi | 2004-11-30 |
| 6815605 | Silicon single crystal and wafer doped with gallium and method for producing them | Teruhiko Hirasawa, Katsushi Tokunaga, Tetsuya Igarashi, Masafumi Yamaguchi | 2004-11-09 |
| 6815645 | Heat reflecting material and heating device using the material | — | 2004-11-09 |
| 6805991 | Nonaqueous electrolyte solution secondary battery | — | 2004-10-19 |
| 6770507 | Semiconductor wafer and method for producing the same | Takashi Matsuura, Junichi Murota | 2004-08-03 |
| 6709689 | Drawn yarn package and production method therefor | Tadashi Koyanagi, Akira Yamashita | 2004-03-23 |
| 6689461 | False twisted yarn of polyester composite fiber and method for production thereof | Tadashi Koyanagi, Teruhiko Matsuo, Mitsuyuki Yamamoto | 2004-02-10 |
| 6682815 | Stretched yarn pirn | Tadashi Koyanagi | 2004-01-27 |
| 6673443 | Polyester conjugate fiber pirn and method for producing same | Tadashi Koyanagi | 2004-01-06 |