Tsutomu Hashizume
21Patents
8h-index
11Co-inventors
68Inventor score
Filing activity: Nov 25, 1996 → Nov 9, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6089701A | Ink jet recording head having reduced stress concentration near the boundaries of pressure generating chambers | Performing Operations; Transporting | 46 | Expired |
| US6616270B1 | Ink jet recording head and ink jet recording apparatus comprising the same | Performing Operations; Transporting | 40 | Expired |
| US6109736A | Ink jet recording head containing a sealed fluid for protecting a piezoelectric vibrator | Performing Operations; Transporting | 31 | Expired |
| US6113225A | Ink jet type recording head | Performing Operations; Transporting | 31 | Expired |
| US6019458A | Ink-jet printing head for improving resolution and decreasing crosstalk | Performing Operations; Transporting | 21 | Expired |
| US6142614A | Piezoelectric actuator using passivation film or interlayer insulating film along with an insulating film to obtain better adhesion | Performing Operations; Transporting | 20 | Expired |
| US6609785B2 | Ink jet recording head having piezoelectric element and electrode patterned with same shape and without pattern shift therebetween | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6260960A | Ink jet print head formed through anisotropic wet and dry etching | Performing Operations; Transporting | 9 | Expired |
| US6966635B2 | Ink jet recording head and ink jet recording apparatus comprising the same | Performing Operations; Transporting | 8 | Expired |
| US6183070A | Ink jet recording head and process of manufacturing the ink jet recording head | Performing Operations; Transporting | 6 | Expired |
| US6334244B1 | Method for producing ink-jet recording head | Emerging Cross-Sectional Technologies | 5 | Expired |
| USRE39474E1 | Method of manufacturing an ink jet recording head having reduced stress concentration near the boundaries of the pressure generating chambers | General | 5 | Expired |
| US6126279A | Ink jet printing head for improving resolution and decreasing crosstalk | Performing Operations; Transporting | 4 | Expired |
| US6209992A | Ink-jet recording head, ink-jet recording apparatus using the same, and method for producing ink-jet recording head | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6402971B2 | Ink jet recording head and manufacturing method therefor | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7003857B1 | Method of producing an ink-jet printing head | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7673975B2 | Ink jet recording head having piezoelectric element and electrode patterned with same shape and without pattern shift therebetween | Emerging Cross-Sectional Technologies | 2 | Active |
| US7354140B2 | Ink jet recording head having piezoelectric element and electrode patterned with same shape and without pattern shift therebetween | Emerging Cross-Sectional Technologies | 2 | Expired |
| USRE45057E1 | Method of manufacturing an ink jet recording head having piezoelectric element | General | 0 | Active |
| US7850288B2 | Ink jet recording head having piezoelectric element and electrode patterned with same shape and without pattern shift therebetween | Emerging Cross-Sectional Technologies | 0 | Active |
| US7827659B2 | Method of manufacturing an ink jet recording head having piezoelectric element | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.