Alphatech Co., Ltd.
22Patents
2Active
22Granted
34Portfolio score
Filing activity: Jan 9, 1995 → Sep 11, 2012 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5863314A | Monolithic jet column reactor pump | Mechanical Engineering; Lighting; Heating | 112 | Expired |
| US6354796B1 | Pump for moving metal in a bath of molten metal | Mechanical Engineering; Lighting; Heating | 110 | Expired |
| US6168753A | Inert pump leg adapted for immersion in molten metal | Mechanical Engineering; Lighting; Heating | 104 | Expired |
| US6082965A | Advanced motor driven impeller pump for moving metal in a bath of molten metal | Mechanical Engineering; Lighting; Heating | 100 | Expired |
| US6899772B1 | Alloy molten composition suitable for molten magnesium environments | Chemistry; Metallurgy | 20 | Expired |
| US8579074B2 | Intake silencer for gas turbine | Emerging Cross-Sectional Technologies | 16 | Active |
| US5549393A | Self-aligning bearing for high temperature applications | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6622118B1 | System and method for comparing signals | Physics | 13 | Expired |
| US5718517A | Self-aligning bearing for high temperature applications | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6004507A | Material formulation for galvanizing equipment submerged in molten and aluminum zinc melts | Chemistry; Metallurgy | 10 | Expired |
| US5713408A | Method for making a multicast roll | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6051183A | Jet column and jet column reactor dross removing dross diluting pumps | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5650120A | Bubble-operated recirculating pump for metal bath | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6261369A | Sink roll for galvanizing bath | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8449215B2 | Hub-shaft assembly | Emerging Cross-Sectional Technologies | 4 | Active |
| US6168757A | Material formulation for galvanizing equipment submerged in molten aluminum and aluminum/zinc melts | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6071074A | Advanced motor driven impeller pump for moving metal in a bath of molten metal | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7234869B1 | Sink roll bearing having ceramic elements for supporting the roll's shaft | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5615482A | Method for making composite centrifugally cast furnace roll rings for furnace rolls | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6562293B1 | Material formulation for galvanizing equipment submerged in molten aluminum and aluminum/zinc melts | Chemistry; Metallurgy | 1 | Expired |
| US6106226A | High velocity prestressed shaft for degasser or pumping application in molten metal | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US5772567A | Composite furnace rolls | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.