Joy Roy
41Patents
15h-index
78Co-inventors
84Inventor score
Filing activity: Jul 11, 1986 → Dec 12, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8475739B2 | Systems and methods for fluid handling | Emerging Cross-Sectional Technologies | 151 | Active |
| US5087930A | Drop-on-demand ink jet print head | Performing Operations; Transporting | 126 | Expired |
| US4883219A | Manufacture of ink jet print heads by diffusion bonding and brazing | Performing Operations; Transporting | 76 | Expired |
| US8318094B1 | Substrate analysis systems | Emerging Cross-Sectional Technologies | 63 | Active |
| US4728969A | Air assisted ink jet head with single compartment ink chamber | Performing Operations; Transporting | 53 | Expired |
| US5124716A | Method and apparatus for printing with ink drops of varying sizes using a drop-on-demand ink jet print head | Performing Operations; Transporting | 51 | Expired |
| US5381162A | Method of operating an ink jet to reduce print quality degradation resulting from rectified diffusion | Performing Operations; Transporting | 49 | Expired |
| US5170177A | Method of operating an ink jet to achieve high print quality and high print rate | Performing Operations; Transporting | 31 | Expired |
| US6514704B2 | Quality control mechanism and process for a biofluid multi-ejector system | Physics | 30 | Expired |
| US6336699B1 | Self-cleaning wet wipe method and apparatus for cleaning orifices in an AIP type printhead | Performing Operations; Transporting | 29 | Expired |
| US9664702B2 | Fluid handling apparatus and configurations | Physics | 27 | Active |
| US5155498A | Method of operating an ink jet to reduce print quality degradation resulting from rectified diffusion | Performing Operations; Transporting | 26 | Expired |
| US6595618B1 | Method and apparatus for filling and capping an acoustic ink printhead | Performing Operations; Transporting | 22 | Expired |
| US6428160B2 | Method for achieving high quality aqueous ink-jet printing on plain paper at high print speeds | Performing Operations; Transporting | 18 | Expired |
| US9592508B2 | Systems and methods for fluid handling | Emerging Cross-Sectional Technologies | 16 | Active |
| US6134291A | Acoustic ink jet printhead design and method of operation utilizing flowing coolant and an emission fluid | Performing Operations; Transporting | 15 | Expired |
| US8597590B2 | Systems and methods for multiple analyte detection | Emerging Cross-Sectional Technologies | 15 | Active |
| US9810704B2 | Systems and methods for multi-analysis | Emerging Cross-Sectional Technologies | 15 | Active |
| US6350012B1 | Method and apparatus for cleaning/maintaining of an AIP type printhead | Performing Operations; Transporting | 14 | Expired |
| US6861034B1 | Priming mechanisms for drop ejection devices | Performing Operations; Transporting | 13 | Expired |
| US6154236A | Acoustic ink jet printhead design and method of operation utilizing flowing coolant and an emission fluid | Performing Operations; Transporting | 12 | Expired |
| US6713022B1 | Devices for biofluid drop ejection | Physics | 10 | Expired |
| US6484975B1 | Method and apparatus to achieve uniform ink temperatures in printheads | Performing Operations; Transporting | 10 | Expired |
| US6464337B2 | Apparatus and method for acoustic ink printing using a bilayer printhead configuration | Performing Operations; Transporting | 8 | Expired |
| US10856791B2 | Systems, devices, and methods for bodily fluid sample collection | Physics | 7 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.