Portals Engineering Limited
6Patents
0Active
6Granted
29Portfolio score
Filing activity: Jan 15, 1985 → Feb 12, 1992
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4974646A | Powder flow control valve | Physics | 59 | Expired |
| US4976296A | Filling machines | Performing Operations; Transporting | 30 | Expired |
| US4653972A | Bookbinding machine | Performing Operations; Transporting | 9 | Expired |
| US4919747A | Label applying devices for applying adhesive labels to articles | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4830352A | Gathering machine | Performing Operations; Transporting | 4 | Expired |
| US5262620A | Sheet counting apparatus | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.