Ashbrook Simon-Hartley, LP
13Patents
1Active
13Granted
30Portfolio score
Filing activity: Apr 3, 1986 → May 28, 2010 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5133872A | Method and apparatus for controlling throughput in a beltpress | Performing Operations; Transporting | 21 | Expired |
| US4891142A | Moving bed filtration apparatus and method | Performing Operations; Transporting | 21 | Expired |
| US5049486A | Temperature monitoring apparatus and method in a composting system through which organic matter is moved to effect composting | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5582722A | Continuous self-cleaning filtration unit | Performing Operations; Transporting | 17 | Expired |
| US4836100A | Apparatus for regulating feed thickness in a belt press | Performing Operations; Transporting | 12 | Expired |
| US5023178A | Composting method and apparatus utilizing air assist to aid in movement of organic matter | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4839053A | Biomass growth process with separate aeration and media compartments | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4731188A | Adjustable ramp for dewatering device | Performing Operations; Transporting | 8 | Expired |
| US5730886A | Continuous self-cleaning filtration unit | Performing Operations; Transporting | 7 | Expired |
| US5139554A | Composting method and apparatus utilizing inclined vessel | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8152998B2 | Screenless granular media filters and methods of use | Performing Operations; Transporting | 4 | Active |
| US5248612A | Apparatus for composting using improved charging and discharging sequence | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5076827A | Method and apparatus for composting using improved charging and discharging sequence | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.