Smith & Loveless Inc.
37Patents
14Active
37Granted
47Portfolio score
Filing activity: Jul 7, 1980 → Oct 6, 2022 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5156742A | Liquid treatment method and apparatus | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4426293A | Method and apparatus for removing oil from water | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4861472A | Apparatus for filtration of a suspension | Performing Operations; Transporting | 25 | Expired |
| US4594153A | Sewage pumping station | Fixed Constructions | 25 | Expired |
| US5545327A | Wastewater treatment method and apparatus | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4767532A | Apparatus for removing grit | Performing Operations; Transporting | 16 | Expired |
| US4661047A | Submersible pump guide rail arrangement | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4348158A | Sewage pumping station | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6789357B1 | Lift assist mechanism for lifting large enclosures | Fixed Constructions | 13 | Expired |
| US5160610A | Radial header for dissolved air flotation systems | Performing Operations; Transporting | 13 | Expired |
| US4522233A | Multi-position plug valve | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5035583A | Sewage pump priming system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5118415A | Oxidation ditch velocity control system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4614589A | Method and apparatus for biological aerobic wastewater treatment | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6808165B1 | Apparatus for mixing and introducing gas into a large body of liquid | Performing Operations; Transporting | 7 | Expired |
| US6224041A | Splash plate structure for aerators | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6811697B2 | Apparatus and method for extracting particles from a fluid stream | Performing Operations; Transporting | 7 | Expired |
| US6153099A | Biological waste treatment process and apparatus | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7331769B2 | Pumping system | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US7441754B2 | Apparatus for introducing a gas into a body of liquid | Performing Operations; Transporting | 4 | Expired |
| US6123507A | Single port impeller | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7290370B2 | Assist mechanism for lifting and closing large enclosures | Fixed Constructions | 4 | Expired |
| US8133396B2 | Dissolved air floatation with filter system | Performing Operations; Transporting | 4 | Active |
| US6668625B2 | Measurement of the level of settled particles within a fluid vessel | Physics | 3 | Expired |
| US7108010B2 | Check valve position detector | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.