Ashok Murthy
54Patents
15h-index
73Co-inventors
87Inventor score
Filing activity: Oct 20, 1986 → Mar 11, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6045214A | Ink jet printer nozzle plate having improved flow feature design and method of making nozzle plates | Performing Operations; Transporting | 89 | Expired |
| US5658471A | Fabrication of thermal ink-jet feed slots in a silicon substrate | Performing Operations; Transporting | 75 | Expired |
| US6024440A | Nozzle array for printhead | Performing Operations; Transporting | 56 | Expired |
| US5099288A | Fixing device with selectable finish | Physics | 49 | Expired |
| US6076912A | Thermally conductive, corrosion resistant printhead structure | Performing Operations; Transporting | 39 | Expired |
| US6120131A | Method of forming an inkjet printhead nozzle structure | Performing Operations; Transporting | 37 | Expired |
| US6158843A | Ink jet printer nozzle plates with ink filtering projections | Performing Operations; Transporting | 32 | Expired |
| US6190492A | Direct nozzle plate to chip attachment | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6310641A | Integrated nozzle plate for an inkjet print head formed using a photolithographic method | Performing Operations; Transporting | 26 | Expired |
| US5812158A | Coated nozzle plate for ink jet printing | Performing Operations; Transporting | 25 | Expired |
| US6449831B1 | Process for making a heater chip module | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5940096A | Ink jet printhead assembly with non-emitting orifices | Performing Operations; Transporting | 18 | Expired |
| US6039439A | Ink jet heater chip module | Performing Operations; Transporting | 16 | Expired |
| US6183064A | Method for singulating and attaching nozzle plates to printheads | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4724452A | Shutter | Physics | 15 | Expired |
| US5469247A | Toned member cleaning by electrified roller | Physics | 14 | Expired |
| US8332332B2 | Methods and apparatus for managing pre-paid printing system accounts | Physics | 13 | Active |
| US6106096A | Printhead stress relief | Performing Operations; Transporting | 13 | Expired |
| US6820959B1 | Ink jet cartridge structure | Performing Operations; Transporting | 12 | Expired |
| US6254214A | System for cooling and maintaining an inkjet print head at a constant temperature | Performing Operations; Transporting | 11 | Expired |
| US6120135A | Printhead having heating element conductors arranged in spaced apart planes and including heating elements having a substantially constant cross-sectional area in the direction of current flow | Performing Operations; Transporting | 11 | Expired |
| US6267472A | Ink jet heater chip module with sealant material | Performing Operations; Transporting | 10 | Expired |
| US6209203A | Method for making nozzle array for printhead | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6796019B2 | Process for making a heater chip module | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6170931A | Ink jet heater chip module including a nozzle plate coupling a heater chip to a carrier | Performing Operations; Transporting | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.