Hypro, LLC
34Patents
2Active
34Granted
36Portfolio score
Filing activity: Dec 8, 1986 → Sep 30, 2009 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5174383A | Apparatus and method for controlling the introduction of chemical foamant into water stream in fire-fighting equipment | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5494112A | System for introduction of concentrated liquid chemical foamant into a water stream for fighting fires | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4824342A | Chemical injector system for piston pumps | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US5232052A | Apparatus and method for controlling the introduction of chemical foamant into a water stream in fire-fighting equipment | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5313548A | Direct current motor speed controller | Emerging Cross-Sectional Technologies | 35 | Expired |
| USRE35362E | Apparatus and method for controlling the introduction of chemical foamant into a water stream in fire-fighting equipment | General | 28 | Expired |
| US5765644A | Dual tank control system and method for use in foam introduction fire fighting systems | Human Necessities | 28 | Expired |
| US6766863B2 | Fire fighting foam injection system with auto-start feature | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5449280A | Pump including integral reservoirs for permitting dry run of pump | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4830589A | Variable stroke positive displacement pump | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6085586A | Flow meter system with remote displays for each discharge | Physics | 25 | Expired |
| US6557787B2 | Nozzle for agricultural sprayers | Performing Operations; Transporting | 23 | Expired |
| US6886639B2 | High flow foam system for fire fighting applications | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5764463A | Current limiting circuit and electronic fuse for use in foam injection fire fighting systems | Human Necessities | 22 | Expired |
| US7163163B2 | Wide angle nozzle for agricultural sprayers | Performing Operations; Transporting | 21 | Expired |
| US4732175A | Surge suppressor | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US6712293B2 | Nozzle tip for agricultural sprayers | Performing Operations; Transporting | 15 | Expired |
| US7318483B2 | Fire fighting foam injection system with auto-start feature | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6394753B1 | Flexible impeller removal and installation method | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6116855A | Flexible impeller removal system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6095776A | Peristalic rubber impeller pump | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4721444A | Fluid pump incorporating pulsation dampener surrounding its shaft | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5934173A | Reciprocating plunger pump | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5911562A | High pressure fluid delivery system with automatic priming valve | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5074767A | Positive displacement pump with rotating reciprocating piston and improved lubrication feature | Mechanical Engineering; Lighting; Heating | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.