Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5819518 | Method of producing a hose including reinforcing threads | — | 1998-10-13 |
| 5799703 | Synthetic resin corrugated pipe having a concave-convex surface | by Chizuko Kanao, heir, by Shigeki Kanao, heir | 1998-09-01 |
| 5769127 | Resin pipe | by Chizuko Kanao, heir, by Shigeki Kanao, heir | 1998-06-23 |
| 5644832 | Method of providing sealing connection between corrugated spiral pipes | — | 1997-07-08 |
| 5601119 | Hose including reinforcing threads and method of producing the same | — | 1997-02-11 |
| 5573038 | Pressure-resistant helical corrugated pipe including a thin metal reinforcing plate | — | 1996-11-12 |
| 5555915 | Cleaner hose | — | 1996-09-17 |
| 5507319 | Synthetic resin bellows pipe | — | 1996-04-16 |
| 5478123 | Corrugated spiral pipe joint, corrugated spiral pipe provided with the joint, producing method therefor, and method of connecting a corrugated spiral pipe to the corrugated spiral pipe | — | 1995-12-26 |
| 5458380 | Pipe joint | — | 1995-10-17 |
| 5429397 | Corrugated pipe with joint and method of forming the latter on the former | — | 1995-07-04 |
| 5415440 | Corrugated spiral pipe with joint, process of producing the same, and method of providing sealing connection between corrugated spiral pipes | — | 1995-05-16 |
| 5416270 | Cleaner hose with built-in-conductive wire | — | 1995-05-16 |
| 5390704 | Synthetic resin pipe including cylindrical inner wall and a spirally extending corrugated outer wall | — | 1995-02-21 |
| 5385174 | Pressure-resistant helical corrugated pipe | — | 1995-01-31 |
| 5329973 | Rigid polyvinyl chloride pipe | — | 1994-07-19 |
| 5316047 | Pressure-resistant helical corrugated pipe | — | 1994-05-31 |
| 5311753 | Drain hose for washing machine and which includes a corrugated intermediate portion | — | 1994-05-17 |
| 5284185 | Pressure-resistant helical corrugated pipe and method of producing same | — | 1994-02-08 |
| 5193588 | Pressure-resistant helical corrugated pipe | — | 1993-03-16 |
| 5191916 | Pressure-resistant helical corrugated pipe | — | 1993-03-09 |
| 5184649 | Pressure-resistant helical corrugated pipe | — | 1993-02-09 |
| 5109889 | Pressure-resistant helical corrugated pipe | — | 1992-05-05 |
| D322026 | Tube clamp | — | 1991-12-03 |
| 5046531 | Synthetic resin pipe for underground use | — | 1991-09-10 |