Hatch Ltd.
89Patents
55Active
89Granted
51Portfolio score
Filing activity: Jun 15, 1977 → Oct 31, 2022 · 12 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD709510S1 | Tablet cover | General | 62 | Active |
| US6573691B2 | Control system and method for voltage stabilization in electric power system | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6168532A | Multi-configuration sports/recreation facility | Fixed Constructions | 25 | Expired |
| US6603795B2 | Power control system for AC electric arc furnace | Emerging Cross-Sectional Technologies | 22 | Expired |
| USD727918S1 | Tablet cover | General | 21 | Active |
| US8532834B2 | Method for integrating controls for captive power generation facilities with controls for metallurgical facilities | Emerging Cross-Sectional Technologies | 13 | Active |
| US4126425A | Gas mixer for sublimation purposes | Performing Operations; Transporting | 12 | Expired |
| US6857464B2 | Adjustable casting mold | Performing Operations; Transporting | 12 | Expired |
| US8482295B2 | Electromagnetic bath level measurement for pyrometallurgical furnaces | Emerging Cross-Sectional Technologies | 12 | Active |
| US9870593B2 | System, method and controller for managing and controlling a micro-grid | Physics | 11 | Active |
| US5082493A | Processing of carbon steel furnace dusts | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6676824B2 | Process for purification of molten salt electrolytes | Chemistry; Metallurgy | 9 | Expired |
| US6377605B1 | Electrode seal for arc furnace | Electricity | 9 | Expired |
| US7665362B2 | Systems, methods and apparatus for non-disruptive and non-destructive inspection of metallurgical furnaces and similar vessels | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US5468190A | Multi-purpose arena | Fixed Constructions | 7 | Expired |
| US6814012B2 | Furnace binding and adjustment systems | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6860983B2 | Recovery and re-use of anode oxygen from electrolytic cells | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5867523A | Electric furnace with conductive hearth | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7283866B2 | Needle having multiple electrodes | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5406580A | Electrode seal for arc furnaces | Electricity | 6 | Expired |
| US10995014B1 | Process for producing crystallized metal sulfates | Emerging Cross-Sectional Technologies | 5 | Active |
| US9791416B2 | Furnace structural integrity monitoring systems and methods | Physics | 4 | Active |
| US6945775B2 | Method and apparatus for heating a slurry to a predetermined temperature | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7075966B2 | Electrode column | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5471020A | Modal silencer | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.