Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5934128 | Heat transfer tube having grooved inner surface | Masayoshi Takiura, Seizo Masukawa, Shunroku Sukumoda | 1999-08-10 |
| 5791405 | Heat transfer tube having grooved inner surface | Masayoshi Takiura, Seizo Masukawa, Shunroku Sukumoda | 1998-08-11 |
| 5704424 | Heat transfer tube having grooved inner surface and production method therefor | Takashi Kazama, Makoto Miyauchi, Yoshikatsu Arayama, Kohtaroh Nagahara, Shunroku Sukumoda | 1998-01-06 |
| 5052476 | Heat transfer tubes and method for manufacturing | Shunroku Sukumoda, Seizo Masukawa | 1991-10-01 |