Ryuzo Yamada
6Patents
4h-index
10Co-inventors
50Inventor score
Filing activity: Jan 22, 1991 → May 17, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6332361A | Method for evaluating bonding properties of a metallic pipe | Physics | 17 | Expired |
| US5152605A | Apparatus for making cooled concrete | Performing Operations; Transporting | 15 | Expired |
| US5147024A | Roller conveyor | Performing Operations; Transporting | 13 | Expired |
| US6378760B1 | Method for manufacturing joint of carbon steel pipes suitable for expansion and expanding method | Performing Operations; Transporting | 13 | Expired |
| US5934805A | Method and an apparatus for flaw detection | Physics | 2 | Expired |
| US6592154B2 | Metal-pipe bonded body, pipe expansion method of metal-pipe bonded body, and method for inspecting metal-pipe bonded body | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.