Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8147623 | Steel pipe as fuel injection pipe | Osamu Endo, Katsunori Nagao, Keisuke Hitoshio | 2012-04-03 |
| 7568736 | Joint structure of branch connector for common rail | — | 2009-08-04 |
| 7431781 | Method for forming a common-rail injection system for diesel engine | Masayoshi Usui, Teruhisa Takahashi | 2008-10-07 |
| 7275521 | Joint structure of diverging branch pipe in fuel rail for internal combustion engine, diverging branch pipe and manufacture method of its diverging branch pipe | Masayoshi Usui, Yasuaki Hashimoto, Hiroyuki Nishizawa, Iichiro Seino | 2007-10-02 |
| 7125051 | Common-rail injection system for diesel engine | Masayoshi Usui, Teruhisa Takahashi | 2006-10-24 |
| 6918378 | High-pressure fuel injection pipe | Masayoshi Usui, Teruhisa Takahashi | 2005-07-19 |
| 6805144 | Protective cover for umbrellas and umbrella with the protective cover fixed thereto | Shoichiro Usui, Masayoshi Usui | 2004-10-19 |
| 6562484 | Steel material of high fatigue strength and a process for manufacturing the same | Masayoshi Usui | 2003-05-13 |
| 6494183 | Common rail for diesel engine | Masayoshi Usui | 2002-12-17 |
| 6463909 | Common rail | Shoichiro Usui | 2002-10-15 |
| 6408826 | Common rail and method of manufacturing the same | Masayoshi Usui, Eiji Watanabe, Kazunori Takikawa, Ryuichi Kusanagi | 2002-06-25 |
| 6397881 | METHOD FOR IMPROVING FATIGUE STRENGTH DUE TO REPEATED PRESSURE AT BRANCH HOLE PART IN MEMBER FOR HIGH PRESSURE FLUID, BRANCH HOLE PART OF MEMBER FOR HIGH PRESSURE FLUID FORMED BY THE METHOD, AND MEMBER FOR HIGH PRESSURE FLUID WITH BUILT-IN SLIDER HAVING THE BRANCH HOLE | Masayoshi Usui, Eiji Watanabe, Kazunori Takikawa, Ryuichi Kusanagi | 2002-06-04 |
| 6317975 | Method of manufacturing common rails | Ryuichi Kusanagi | 2001-11-20 |
| 6263862 | Common rail and method of manufacturing the same | Masayoshi Usui, Eiji Watanabe, Kazunori Takikawa, Ryuichi Kusanagi | 2001-07-24 |
| 6213095 | Common rail and method of manufacturing the same | Masayoshi Usui, Eiji Watanabe, Kazunori Takikawa | 2001-04-10 |
| 6126208 | Common rail and method of manufacturing the same | Masayoshi Usui, Eiji Watanabe, Kazunori Takikawa, Ryuichi Kusanagi | 2000-10-03 |
| 6050611 | Common rail | — | 2000-04-18 |
| 5957507 | Joint structure for branch connectors in common rails | — | 1999-09-28 |
| 4346739 | Composite metal tubing | — | 1982-08-31 |