Polycorp Ltd.
22Patents
21Active
22Granted
46Portfolio score
Filing activity: Nov 24, 1998 → Nov 15, 2021 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6213407A | Two-piece rail seal clip and tool for installing same | Fixed Constructions | 10 | Expired |
| US8172158B1 | Flangeway former and rail boot system | Fixed Constructions | 9 | Active |
| US8622330B2 | Mill liner assembly | Performing Operations; Transporting | 9 | Active |
| US8308906B2 | Unidirectional discharge grate assembly | Performing Operations; Transporting | 7 | Active |
| US9289775B2 | Discharge grate assembly | Performing Operations; Transporting | 6 | Active |
| US8360350B2 | Discharge end liner | Performing Operations; Transporting | 4 | Active |
| US8714462B1 | Special track assembly and methods of making same | Fixed Constructions | 4 | Active |
| US9617688B2 | Rail assembly | Fixed Constructions | 4 | Active |
| US10427164B2 | Discharge end wall inserts | Performing Operations; Transporting | 3 | Active |
| US11123741B2 | Discharge end wall system | Performing Operations; Transporting | 2 | Active |
| US11666923B2 | Split pulp chamber insert assembly | Performing Operations; Transporting | 2 | Active |
| US10370798B2 | Rail assembly | Fixed Constructions | 1 | Active |
| US10487456B2 | Special trackwork assembly | Fixed Constructions | 1 | Active |
| US10456884B2 | Liner system for a mill shell | Performing Operations; Transporting | 0 | Active |
| US10093068B2 | Method and system for providing a rubber lining | Performing Operations; Transporting | 0 | Active |
| US8100342B1 | Shallow flangeway rail seal | Fixed Constructions | 0 | Active |
| US12305338B1 | One-piece rail boot with integrated flangeway former | Fixed Constructions | 0 | Active |
| USD976974S1 | Discharge grate | General | 0 | Active |
| US11174597B2 | System and method for securing tuned mass dampers to rail | Fixed Constructions | 0 | Active |
| US8245950B2 | Removable rail seal | Fixed Constructions | 0 | Active |
| US11752503B2 | Anti-plugging discharge grates | Performing Operations; Transporting | 0 | Active |
| US11268246B2 | System and method for securing tuned mass dampers to rail | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.