Comalco Aluminum Limited
55Patents
0Active
55Granted
39Portfolio score
Filing activity: Apr 20, 1982 → Jun 18, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5752729A | Vacuum lifting device | Performing Operations; Transporting | 85 | Expired |
| US4713203A | Bauxite proppant | Fixed Constructions | 62 | Expired |
| US5175133A | Ceramic Microspheres | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5240654A | Method of making ceramic microspheres | Chemistry; Metallurgy | 36 | Expired |
| US5658447A | Electrolysis cell and method for metal production | Chemistry; Metallurgy | 31 | Expired |
| US5577546A | Particulate feedstock for metal injection molding | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4880541A | Hot filter media | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6279645A | Bleed out detector for direct chill casting | Performing Operations; Transporting | 18 | Expired |
| US5502743A | High temperature furnace | Electricity | 17 | Expired |
| US5477906A | Casting of metal objects | Performing Operations; Transporting | 15 | Expired |
| US5320803A | Process for making aluminum-lithium alloys of high toughness | Chemistry; Metallurgy | 14 | Expired |
| US4795540A | Slotted cathode collector bar for electrolyte reduction cell | Chemistry; Metallurgy | 13 | Expired |
| US5476574A | Continuous alumina feeder | Chemistry; Metallurgy | 12 | Expired |
| US5730836A | Evaporative concentration of clay slurries | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5217546A | Cast aluminium alloys and method | Chemistry; Metallurgy | 10 | Expired |
| US4668485A | Recovery of sodium aluminate from Bayer process red mud | Chemistry; Metallurgy | 10 | Expired |
| US5089093A | Process for controlling aluminum smelting cells | Chemistry; Metallurgy | 10 | Expired |
| US5503220A | Heating and/or cooling of vessels | Performing Operations; Transporting | 9 | Expired |
| US5658544A | Gas-solid contacting method | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5330631A | Aluminium smelting cell | Chemistry; Metallurgy | 9 | Expired |
| US5484492A | Al-Si alloys and method of casting | Chemistry; Metallurgy | 9 | Expired |
| US5352419A | Recovery of aluminium and fluoride values from spent pot lining | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5297611A | Casting of metal objects | Performing Operations; Transporting | 8 | Expired |
| US4810682A | Production of useful materials including synthetic nepheline from Bayer red mud | Chemistry; Metallurgy | 7 | Expired |
| US6113756A | Cathode construction | Chemistry; Metallurgy | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.