TRIS INC
17Patents
7Active
17Granted
38Portfolio score
Filing activity: Jul 7, 1995 → Jul 6, 2021 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6259183A | Carbon commutator | Electricity | 11 | Expired |
| US5686118A | Apparatus for compressing-forming powder | Performing Operations; Transporting | 7 | Expired |
| US6833650B2 | Plane commutator of motor having a base made of conductive powder | Electricity | 7 | Expired |
| US6755882B2 | Metal-graphite brush | Electricity | 6 | Expired |
| US6674212B2 | Current-carrying member for a direct-current motor in a fuel pump, method for producing the same, and fuel pump | Electricity | 5 | Expired |
| US6700292B2 | Metal-graphite brush | Electricity | 5 | Expired |
| US9024504B2 | Carbon commutator and a method for production thereof | Electricity | 4 | Active |
| US7067951B2 | Copper-graphite brush | Electricity | 3 | Expired |
| US7586230B2 | Brush, commutator, and commutator device | Electricity | 2 | Active |
| US7294166B2 | Metal-graphite brush | Electricity | 1 | Expired |
| US6949863B2 | Metal-graphite brush | Electricity | 1 | Expired |
| US6758881B2 | Metal-graphite brush and production method thereof | Electricity | 1 | Expired |
| US11146152B2 | Brush of motor for automotive electronics | Electricity | 1 | Active |
| US10270322B2 | Laminate carbon brush for fuel pump motor | Electricity | 0 | Active |
| US12255429B2 | Carbon grounding brush | Emerging Cross-Sectional Technologies | 0 | Active |
| US9337599B2 | Carbon brush for fuel pump and method for manufacturing same | Electricity | 0 | Active |
| US11764532B2 | Metal graphite grounding brush mainly composed of silver and method for producing same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.