Flex Box Limited
11Patents
1Active
11Granted
34Portfolio score
Filing activity: Jun 3, 1976 → Jan 26, 2007 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5529317A | Floating ring seal with return structures and process for making it | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4659092A | Mechanical seals | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4552368A | Backup seal with bush in form of radially floating washer | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4538821A | Mechanical seals | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5375854A | Mechanical face seals | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4073161A | Flexible couplings | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5277545A | Vapor emission control | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4492583A | Membrane type couplings | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US8100279B2 | Storage container and corner post thereof | Performing Operations; Transporting | 2 | Active |
| US4744782A | Centrifugal couplings | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US4575357A | Flexible couplings | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.