The Dupps Company
4Patents
0Active
4Granted
23Portfolio score
Filing activity: Jul 20, 1987 → Oct 30, 1991
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4996919A | Bi-metal feed screw for screw presses | Performing Operations; Transporting | 7 | Expired |
| US5088397A | Cast formed bi-metallic worm assembly | Performing Operations; Transporting | 3 | Expired |
| US5188023A | Cast formed bi-metallic worm assembly and method | Performing Operations; Transporting | 2 | Expired |
| US4791864A | Drainage system for expressing fibrous materials | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.