PYROTEK, INC.
80Patents
60Active
80Granted
52Portfolio score
Filing activity: Feb 7, 1994 → Oct 13, 2023 · 11 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6709234B2 | Impeller shaft assembly system | Emerging Cross-Sectional Technologies | 124 | Expired |
| US5718416A | Lid and containment vessel for refining molten metal | Mechanical Engineering; Lighting; Heating | 113 | Expired |
| US6848497B2 | Casting apparatus | Performing Operations; Transporting | 113 | Expired |
| US5425410A | Sand casting mold riser/sprue sleeve | Performing Operations; Transporting | 113 | Expired |
| US6497559B1 | Molten metal submersible pump system | Mechanical Engineering; Lighting; Heating | 109 | Expired |
| US6869564B2 | Molten metal pump system | Mechanical Engineering; Lighting; Heating | 109 | Expired |
| US6679936B2 | Molten metal degassing apparatus | Mechanical Engineering; Lighting; Heating | 107 | Expired |
| US7157043B2 | Bonded particle filters | Performing Operations; Transporting | 103 | Expired |
| US6869271B2 | Molten metal pump system | Mechanical Engineering; Lighting; Heating | 99 | Expired |
| US8915830B2 | Quick change conveyor roll sleeve assembly and method | Emerging Cross-Sectional Technologies | 92 | Active |
| US5755847A | Insulator support assembly and pushbar mechanism for handling glass containers | Chemistry; Metallurgy | 87 | Expired |
| US8475594B2 | Galvanizing bath apparatus | Chemistry; Metallurgy | 86 | Active |
| US8480950B2 | Device and method for obtaining non-ferrous metals | Emerging Cross-Sectional Technologies | 84 | Active |
| US8899932B2 | Molten metal impeller | Mechanical Engineering; Lighting; Heating | 84 | Active |
| US8920680B2 | Methods of preparing carbonaceous material | Emerging Cross-Sectional Technologies | 84 | Active |
| US6716147B1 | Insulated sleeved roll | Emerging Cross-Sectional Technologies | 73 | Expired |
| US9273376B2 | Flux injection assembly and method | Mechanical Engineering; Lighting; Heating | 71 | Active |
| US9193532B2 | Quick change conveyor roll sleeve assembly and method | Emerging Cross-Sectional Technologies | 70 | Active |
| US5383651A | Aluminum coil annealing tray support pad | Emerging Cross-Sectional Technologies | 69 | Expired |
| US9234520B2 | Riserless transfer pump and mixer/pre-melter for molten metal applications | Mechanical Engineering; Lighting; Heating | 66 | Active |
| US9970442B2 | Mold pump assembly | Mechanical Engineering; Lighting; Heating | 52 | Active |
| US9951777B2 | Molten metal pump | Mechanical Engineering; Lighting; Heating | 51 | Active |
| US9476644B2 | Scrap submergence system | Emerging Cross-Sectional Technologies | 51 | Active |
| US9481918B2 | Impact resistant scrap submergence device | Emerging Cross-Sectional Technologies | 51 | Active |
| US9506346B2 | Overflow vortex transfer system | Mechanical Engineering; Lighting; Heating | 50 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.