Laporte Industries Limited
54Patents
0Active
54Granted
37Portfolio score
Filing activity: Aug 30, 1972 → Aug 18, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4657881A | Absorbent materials | Performing Operations; Transporting | 42 | Expired |
| US5015334A | Colloidal composition and its use in the production of paper and paperboard | Textiles; Paper | 41 | Expired |
| US4019978A | Process for the production of alumina | Chemistry; Metallurgy | 36 | Expired |
| US4591581A | Method for making absorbent materials | Human Necessities | 33 | Expired |
| US4033764A | Recovery of metals | Performing Operations; Transporting | 32 | Expired |
| US6302952A | Process for the production of black iron oxide pigments | Chemistry; Metallurgy | 22 | Expired |
| US4049780A | Production of magnesium silicates | Chemistry; Metallurgy | 21 | Expired |
| US5109805A | Absorbent material | Human Necessities | 21 | Expired |
| US3948997A | Vapour phase oxidation process | Chemistry; Metallurgy | 20 | Expired |
| US4418048A | Aluminophosphorus compounds | Chemistry; Metallurgy | 20 | Expired |
| US4224080A | Method of treating inorganic oxide pigments | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4605059A | Heat exchanger | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4448609A | Process for the production of aqueous dispersions of pigmentary titanium dioxide | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4661157A | Production of shaped bodies of boron compounds | Performing Operations; Transporting | 15 | Expired |
| US5571379A | Colloidal composition and its use in the production of paper and paperboard | Textiles; Paper | 14 | Expired |
| US3993640A | Treatment of cellulosic materials | Textiles; Paper | 13 | Expired |
| US3954943A | Synthesis of hydrous magnesium silicates | Chemistry; Metallurgy | 12 | Expired |
| US4355637A | Surgical masks | Human Necessities | 12 | Expired |
| US4115144A | Method of preparing metal oxide slurries | Chemistry; Metallurgy | 12 | Expired |
| US4016246A | Manufacture of synthetic zeolites | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4131545A | Water treatment | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5486499A | Pillared clays | Performing Operations; Transporting | 11 | Expired |
| US4455288A | Arrangement for the entrainment of particulate materials | Chemistry; Metallurgy | 11 | Expired |
| US4804494A | Wood preservative compositions and a process for their production | Chemistry; Metallurgy | 10 | Expired |
| US5171376A | Fluxes for aluminium brazing or welding | Performing Operations; Transporting | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.