PEERLESS MFG. CO
35Patents
15Active
35Granted
42Portfolio score
Filing activity: Dec 14, 1979 → Jun 4, 2015 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4298474A | Multiple filter vessel | Performing Operations; Transporting | 26 | Expired |
| US6377171B1 | On-line filter monitoring system | Performing Operations; Transporting | 19 | Expired |
| US5104431A | High capacity vane | Performing Operations; Transporting | 19 | Expired |
| US4407664A | Multiple filter vessel | Performing Operations; Transporting | 14 | Expired |
| US5137555A | Frontal drain for a marine mist extractor | Emerging Cross-Sectional Technologies | 14 | Expired |
| USD640347S1 | Filter cartridge | General | 11 | Expired |
| US5265645A | Surge reliever relief valve | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4949750A | Surge reliever relief valve | Emerging Cross-Sectional Technologies | 11 | Expired |
| USD639900S1 | Filter cartridge | General | 11 | Expired |
| US7383850B2 | Reagent injection grid | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5653786A | High capacity marine separator | Performing Operations; Transporting | 8 | Expired |
| US5057129A | Moisture separator | Performing Operations; Transporting | 8 | Expired |
| USD638098S1 | Filter cartridge assembly | General | 7 | Expired |
| US4854950A | Moisture separator | Performing Operations; Transporting | 7 | Expired |
| US8815197B2 | Method for urea decomposition and ammonia feed to a selective catalytic reduction system | Performing Operations; Transporting | 7 | Active |
| USRE31966E | Multiple filter vessel | General | 7 | Expired |
| US4971613A | Vane type mist extractor with extended drain | Performing Operations; Transporting | 6 | Expired |
| US4526378A | Filter tube gasket | Performing Operations; Transporting | 5 | Expired |
| USD704306S1 | Injection lance plate | General | 5 | Active |
| US8715399B2 | Particulate filtering with filter cartridges having cylindrical segment shapes | Emerging Cross-Sectional Technologies | 5 | Active |
| US7686862B1 | Composite vane and method of manufacture | Emerging Cross-Sectional Technologies | 4 | Active |
| US5409670A | SCR reactor sealing mechanism | Performing Operations; Transporting | 3 | Expired |
| US9869226B2 | System and method for sequential injection of reagent to reduce NOx from combustion sources | Emerging Cross-Sectional Technologies | 3 | Active |
| US9861934B2 | Cyclonic injector and method for reagent gasification and decomposition in a hot gas stream | Performing Operations; Transporting | 2 | Active |
| USD639901S1 | Filter cartridge | General | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.