Ryoei Engineering Co., Ltd.
2Patents
0Active
2Granted
21Portfolio score
Filing activity: Jul 9, 1991 → Feb 7, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5157912A | Push-pull chain and reciprocating apparatus using the same | Performing Operations; Transporting | 5 | Expired |
| US6367327B2 | Method and apparatus for inspecting communicating hole of a cast molded article | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.