Ashbrook Corporation
8Patents
0Active
8Granted
27Portfolio score
Filing activity: Apr 16, 1997 → Sep 17, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5865997A | Scraper blade assembly | Performing Operations; Transporting | 59 | Expired |
| US6517712B2 | Descending bed filter | Performing Operations; Transporting | 12 | Expired |
| US6790351B2 | Vertical filter | Performing Operations; Transporting | 12 | Expired |
| US6248245A | Belt press with adjustable inlet guide | Performing Operations; Transporting | 10 | Expired |
| US6641737B2 | Vertical filter | Performing Operations; Transporting | 8 | Expired |
| US6319413A | Method of filtering liquid using a vertical filter | Performing Operations; Transporting | 8 | Expired |
| US6454102B2 | Belt press with adjustable inlet guide | Performing Operations; Transporting | 7 | Expired |
| US6676582B1 | Belt pressure roller | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.