Pulsafeeder, Inc.
17Patents
5Active
17Granted
52Portfolio score
Filing activity: Nov 13, 1987 → Jul 26, 2021 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5056036A | Computer controlled metering pump | Physics | 123 | Expired |
| US4781535A | Apparatus and method for sensing diaphragm failures in reciprocating pumps | Mechanical Engineering; Lighting; Heating | 79 | Expired |
| US7175397B2 | Effervescent gas bleeder apparatus | Mechanical Engineering; Lighting; Heating | 64 | Expired |
| US5667368A | Diaphragm metering pump including improved leak detection diaphragm | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5647733A | Diaphragm metering pump having modular construction | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5676531A | Autoclavable pump head assembly | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5860793A | Diaphragm metering pump with push to prime air bleeder valve | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5398711A | Modular fluid characteristic sensor and additive controller | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6222371A | Hand-held fluid tester for process fluids | Physics | 13 | Expired |
| US6930486B2 | Conductivity sensor | Physics | 12 | Expired |
| US8322994B2 | Effervescent gas bleeder apparatus | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US7806673B2 | Gear pump | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7740399B2 | Dry chemical feeder for a chemical mixing system | Performing Operations; Transporting | 5 | Active |
| US6139286A | Automatic venting back pressure valve | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7896021B2 | Quick change check valve system | Emerging Cross-Sectional Technologies | 2 | Active |
| US8708678B2 | Gear pump | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US12129846B2 | Method and system for operating a pump | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.