Perma Tubes Ltd.
2Patents
0Active
2Granted
19Portfolio score
Filing activity: Feb 24, 1984 → Feb 24, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4595168A | Plastic lined paper form for casting concrete columns | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4876054A | Concrete forming method | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.