Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7798206 | Heat exchanger and method of manufacturing the same | Hiroyuki Sudo, Takashi Hirayama | 2010-09-21 |
| 5931226 | Refrigerant tubes for heat exchangers | Yuji Yamamoto, Shinji Ito | 1999-08-03 |
| 5784776 | Process for producing flat heat exchange tubes | Yoshihiro Saito, Takashi Tamura, Satoru Kaimura, Satoshi Hozumi, Masashi Sakaguchi +2 more | 1998-07-28 |
| 5749144 | Method of making refrigerant tubes for heat exchangers | Yuji Yamamoto, Shinji Ito | 1998-05-12 |
| 5730215 | Refrigerant tubes for heat exchangers | Yuji Yamamoto, Shinji Ito | 1998-03-24 |
| 5638897 | Refrigerant tubes for heat exchangers | Yuji Yamamoto, Shinji Ito | 1997-06-17 |
| 5553377 | Method of making refrigerant tubes for heat exchangers | Yuji Yamamoto, Shinji Ito | 1996-09-10 |
| 5386629 | Tube for heat exchangers and a method for manufacturing the tube | Wataru Ouchi, Katsuhisa Suzuki, Toshinori Tokutake | 1995-02-07 |
| 5280971 | Tubular body having pipe joint member attached thereto with brazing ring | Toshinori Tokutake | 1994-01-25 |
| 5228727 | Tubular body having pipe joint member attached thereto and method of producing same | Toshinori Tokutake | 1993-07-20 |
| 5186250 | Tube for heat exchangers and a method for manufacturing the tube | Wataru Ouchi, Katsuhisa Suzuki, Toshinori Tokutake | 1993-02-16 |