ECC International Limited
117Patents
0Active
117Granted
43Portfolio score
Filing activity: Mar 14, 1985 → Nov 2, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5531821A | Surface modified calcium carbonate composition and uses therefor | Chemistry; Metallurgy | 99 | Expired |
| US5244542A | Aqueous suspensions of calcium-containing fillers | Textiles; Paper | 54 | Expired |
| US4854971A | Clay composition | Chemistry; Metallurgy | 51 | Expired |
| US5584923A | Surface modified calcium carbonate composition and uses therefor | Chemistry; Metallurgy | 48 | Expired |
| US5576617A | Apparatus & method for measuring the average aspect ratio of non-spherical particles in a suspension | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5833747A | Paper coating pigments and their production and use | Textiles; Paper | 40 | Expired |
| US5522924A | Method for producing high brightness low abrasion calcined kaolin pigment | Chemistry; Metallurgy | 35 | Expired |
| US5685900A | Method for beneficiating discolored kaolin to produce high brightness coating clay | Chemistry; Metallurgy | 33 | Expired |
| US5882396A | Pigments for paper coating compositions | Textiles; Paper | 32 | Expired |
| US5332564A | Process for production of rhombic shaped precipitated calcium carbonate | Chemistry; Metallurgy | 31 | Expired |
| US5958131A | Cementitious compositions and their uses | Chemistry; Metallurgy | 30 | Expired |
| US4937210A | Production of porous inorganic materials | Chemistry; Metallurgy | 29 | Expired |
| US5384013A | Cationic pigment-containing paper coating composition | Textiles; Paper | 29 | Expired |
| US4800103A | Inorganic fillers coated with latex | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5028482A | Latex coated inorganic fillers and process for preparing same | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5846314A | Process for treating a waste material resulting from an oil recovery from tar sands process | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5128606A | Aspect radio measurement | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4683259A | Resin compositions comprising organoclays of improved dispersibility | Chemistry; Metallurgy | 26 | Expired |
| US5992641A | Methods and apparatus for screening particulate materials | Performing Operations; Transporting | 26 | Expired |
| US5458973A | Granular filler | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5558850A | Precipitated calcium carbonate | Chemistry; Metallurgy | 25 | Expired |
| US5236989A | Aggregated composite mineral pigments | Chemistry; Metallurgy | 25 | Expired |
| US5879512A | Paper coating | Textiles; Paper | 24 | Expired |
| US5261956A | Method for improving the rheology of calcined kaolin clay products | Chemistry; Metallurgy | 24 | Expired |
| US5454865A | Method for preparing refined kaolin in clay products | Chemistry; Metallurgy | 24 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.