Patent assignee · JP · COMPANY

Ryoei Engineering Co., Ltd.

2Patents
0Active
2Granted
21Portfolio score

Filing activity: Jul 9, 1991 → Feb 7, 2001

Most-cited patents

PatentTitleAreaCited byStatus
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.