Aquatech Co., Ltd.
16Patents
3Active
16Granted
38Portfolio score
Filing activity: Apr 12, 1977 → Oct 8, 2020 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4199837A | Apparatus for sewer cleaning and the like | Fixed Constructions | 69 | Expired |
| US4234980A | Apparatus for sewer cleaning and the like | Fixed Constructions | 43 | Expired |
| US4095422A | Vertical-axis composite swinging-blade water wheel | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4922571A | Vacuum loading machine | Fixed Constructions | 24 | Expired |
| US5906745A | Apparatus and method for purifying polluted water | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7427354B2 | Degradation treatment process and system for organics in organically-polluted water | Emerging Cross-Sectional Technologies | 17 | Active |
| US6024545A | Tube-pump | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4572783A | Cyclonic separator with screen and ball check | Performing Operations; Transporting | 10 | Expired |
| US6659361B2 | Temperature control device | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6554196B2 | Temperature control device | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5565103A | Solid material flow-separating method | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7594996B2 | Petroleum recovery and cleaning system and process | Chemistry; Metallurgy | 5 | Active |
| US7264733B2 | Method for treating heavy-metal-containing wastewater using sulfidizing agent | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7611631B2 | Indium adsorbent and indium fractioning method | Emerging Cross-Sectional Technologies | 2 | Expired |
| US12146585B2 | Pinch valve actuated by non-contact force | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US6210569A | Device for collecting water polluting phytoplankton drifts and method for collecting water polluting phytoplankton drifts | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.