Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6139296 | Method for treating metal surface, rotary shaft for refrigerant compressor treated by the method, vane for refrigerant compressor treated by the method, and refrigerant compressor using the same | Masazo Okajima, Ayumi Mori, Kazuhisa Ishikawa, Takeo Komatsubara, Masahiko Kamata +2 more | 2000-10-31 |