SORTWELL & CO.
8Patents
3Active
8Granted
36Portfolio score
Filing activity: Sep 5, 1996 → Mar 31, 2014
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5897012A | Collapsible intermediate bulk container | Performing Operations; Transporting | 73 | Expired |
| US5900116A | Method of making paper | Textiles; Paper | 10 | Expired |
| US5935425A | Centrifuge with rotatable scroll and means to mix flocculant with feed slurry | Performing Operations; Transporting | 6 | Expired |
| US5882605A | Reactor for the productions of flowable viscous products | Performing Operations; Transporting | 6 | Expired |
| US6183600A | Method of making paper | Textiles; Paper | 5 | Expired |
| US8721896B2 | Method for dispersing and aggregating components of mineral slurries and low molecular weight multivalent polymers for mineral aggregation | Chemistry; Metallurgy | 0 | Active |
| US9150442B2 | Method for dispersing and aggregating components of mineral slurries and high-molecular weight multivalent polymers for clay aggregation | Chemistry; Metallurgy | 0 | Active |
| US9090726B2 | Low molecular weight multivalent cation-containing acrylate polymers | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.