Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7379226 | Variable optical attenuator | Hidenori Nakata, Kenji Sahara, Yuko Ohta | 2008-05-27 |
| 5842855 | Sealing apparatus for inlet/outlet of compartment of continuous heat treatment furnace, continuous vacuum evaporation facility or the like | — | 1998-12-01 |
| 5791656 | Seal assembly for heat treatment furnaces using an atmospheric gas containing hydrogen gas | — | 1998-08-11 |
| 5769629 | Sealing apparatus for inlet/outlet of atmosphere heat treatment furnace | — | 1998-06-23 |
| 5693288 | Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas | — | 1997-12-02 |
| 5685088 | Sealing apparatus for inlet/outlet of atmosphere facility | — | 1997-11-11 |
| 5683651 | Method and assembly for sealing up the entrance and exit of a heat-treating furnace operated in a gas atmosphere containing hydrogen gas | — | 1997-11-04 |
| 5678831 | Sealing device of compartment gateways of continuous annealing furnaces and continuous painting equipments | — | 1997-10-21 |
| 5658527 | Method of detection and treatment of fires in seal means of comparted entrance and exit of furnace for continuous thermal treatment of metallic strips and the like | — | 1997-08-19 |
| 5287535 | Switching node in label multiplexing type switching network | Kazuo Sakagawa, Ichiro Iida | 1994-02-15 |