Issued Patents All Time
Showing 51–75 of 121 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667875 | Exhaust gas cleaning metallic substrate | — | 1997-09-16 |
| 5655904 | Dental mirror | Yoshiki Oshida | 1997-08-12 |
| 5620666 | Exhaust gas cleaning metallic substrate | — | 1997-04-15 |
| 5492376 | Connecting and fixing method for metallic pipes with small diameter | Katsushi Umezawa | 1996-02-20 |
| 5447773 | Honeycomb body | — | 1995-09-05 |
| 5419876 | Device for the catalytic purification of automotive exhaust gas | Yuuzo Hitachi, Katsushi Washizu | 1995-05-30 |
| 5372893 | X-wrapped metallic honeycomb body | — | 1994-12-13 |
| 5346675 | Exhaust gas cleaning apparatus | Haruo Serizawa | 1994-09-13 |
| 5287621 | Cylinder liner manufacturing process | — | 1994-02-22 |
| 5271647 | Flared structure for connecting metal pipes | — | 1993-12-21 |
| 5265793 | Small thick-walled composite metal tubing and process of producing the same | Yuzo Hitachi, Seiya Takahata | 1993-11-30 |
| 5246786 | Steel product with heat-resistant, corrosion-resistant plating layers | — | 1993-09-21 |
| 5173471 | Exhaust gas cleaning device | Yuzo Hitachi | 1992-12-22 |
| 5172940 | Connector device for connecting small diameter pipe | Katsushi Washizu | 1992-12-22 |
| 5163602 | Multi-walled steel pipe, a method of making the same and a metal strip for use in making the same | — | 1992-11-17 |
| 5141264 | Connector for connecting thin tube | — | 1992-08-25 |
| 5116084 | Steel eyejoint | Yasumitsu Kikuchi | 1992-05-26 |
| 5113653 | Exhaust gas cleaning apparatus | Haruo Serizawa | 1992-05-19 |
| 5114250 | Joint for coupling small-diameter pipes | — | 1992-05-19 |
| 5109888 | High-pressure metallic pipe provided with connecting head part and method for formation thereof | — | 1992-05-05 |
| 5110690 | Substantially flat and thin steel band | Haruo Serizawa | 1992-05-05 |
| 5104627 | Exhaust gas cleaning apparatus | Haruo Serizawa | 1992-04-14 |
| 5090748 | Small-size piping coupling joint | Katsushi Washitzu, Kazunori Takikawa | 1992-02-25 |
| 5090385 | Fuel delivery rail assembly | Kazumi Fukaya, Kazunori Takikawa | 1992-02-25 |
| 5087083 | Connector for connecting small diameter pipe | Katsushi Washizu | 1992-02-11 |