David S. Hunt
35Patents
18h-index
39Co-inventors
81Inventor score
Filing activity: Jun 19, 1991 → Jul 31, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5280300A | Method and apparatus for replenishing an ink cartridge | Performing Operations; Transporting | 173 | Expired |
| US5621445A | Apparatus for refilling ink cartridges | Performing Operations; Transporting | 115 | Expired |
| US6000791A | Printer having a removable print cartridge with handle incorporating an ink inlet value | Performing Operations; Transporting | 105 | Expired |
| US5751320A | Ink recharger for inkjet print cartridge having sliding valve connectable to print cartridge | Performing Operations; Transporting | 90 | Expired |
| US5359353A | Spring-bag printer ink cartridge with volume indicator | Performing Operations; Transporting | 72 | Expired |
| US5675367A | Inkjet print cartridge having handle which incorporates an ink fill port | Performing Operations; Transporting | 55 | Expired |
| US5440333A | Collapsible ink reservoir and ink-jet cartridge with protective bonding layer for the pressure regulator | Performing Operations; Transporting | 42 | Expired |
| US5874976A | Inkjet cartridge fill port adapter | Performing Operations; Transporting | 39 | Expired |
| US6065826A | Modular print cartridge receptacle for use in inkjet printing systems | Performing Operations; Transporting | 31 | Expired |
| US5903292A | Ink refill techniques for an inkjet print cartridge which leave correct back pressure | Performing Operations; Transporting | 30 | Expired |
| US9211980B1 | Microfluidic delivery system for releasing fluid compositions | Emerging Cross-Sectional Technologies | 25 | Active |
| US6224192A | Inkjet printing systems using a modular print cartridge assembly | Performing Operations; Transporting | 23 | Expired |
| US5929883A | Printing system with single on/off control valve for periodic ink replenishment of inkjet printhead | Performing Operations; Transporting | 22 | Expired |
| US5966156A | Refilling technique for inkjet print cartridge having two ink inlet ports for initial filling and recharging | Performing Operations; Transporting | 22 | Expired |
| US5748216A | Inkjet print cartridge having valve connectable to an external ink reservoir for recharging the print cartridge | Performing Operations; Transporting | 19 | Expired |
| US9808812B2 | Microfluidic delivery system | Performing Operations; Transporting | 19 | Active |
| US5434603A | Ink cartridge with passageway for ink level indicator | Performing Operations; Transporting | 19 | Expired |
| US5777648A | Inkjet print cartridge having an ink fill port for initial filling and a recharge port with recloseable seal for recharging the print cartridge with ink | Performing Operations; Transporting | 19 | Expired |
| US5963238A | Intermittent refilling of print cartridge installed in an inkjet printer | Performing Operations; Transporting | 17 | Expired |
| US9278150B2 | Method of delivering a dose of a fluid composition from a microfluidic delivery cartridge | Human Necessities | 16 | Active |
| US5852458A | Inkjet print cartridge having a first inlet port for initial filling and a second inlet port for ink replenishment without removing the print cartridge from the printer | Performing Operations; Transporting | 14 | Expired |
| US9554459B2 | Microfluidic delivery system for releasing fluid compositions | Emerging Cross-Sectional Technologies | 12 | Active |
| US5793387A | Method and apparatus for ink-jet ink level detection | Performing Operations; Transporting | 12 | Expired |
| US5596358A | Method and apparatus for refilling a print cartridge having a reservoir pressure of less than ambient pressure | Performing Operations; Transporting | 4 | Expired |
| US9814098B2 | Microfluidic delivery system for releasing fluid compositions | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.