Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7762105 | Backup structure for an uprising pipe or downfalling pipe in a vacuum degassing apparatus | Kazuhiko Ishimura, Sei Nagano | 2010-07-27 |
| 5851258 | Backup structure for a pipe for feeding a molten substance of high temperature | Hiroshi Ando, Fumiaki Saito, Chikao Tanaka, Koji Hirasawa, Sei Nagano +2 more | 1998-12-22 |
| 5849058 | Refining method for molten glass and an apparatus for refining molten glass | Chikao Tanaka, Kazuhiko Ishimura | 1998-12-15 |
| 5444114 | Thermoplastic resin composition | Hisanaga Shimizu, Kazuo Kitamura | 1995-08-22 |
| 5348996 | Resin composition | — | 1994-09-20 |