Ulrich Hess
19Patents
9h-index
38Co-inventors
72Inventor score
Filing activity: Jan 17, 1986 → Feb 2, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4719477A | Integrated thermal ink jet printhead and method of manufacture | Emerging Cross-Sectional Technologies | 144 | Expired |
| US5635968A | Thermal inkjet printer printhead with offset heater resistors | Performing Operations; Transporting | 100 | Expired |
| US5122812A | Thermal inkjet printhead having driver circuitry thereon and method for making the same | Performing Operations; Transporting | 81 | Expired |
| US5159353A | Thermal inkjet printhead structure and method for making the same | Emerging Cross-Sectional Technologies | 74 | Expired |
| US5635966A | Edge feed ink delivery thermal inkjet printhead structure and method of fabrication | Performing Operations; Transporting | 56 | Expired |
| US5598189A | Bipolar integrated ink jet printhead driver | Performing Operations; Transporting | 23 | Expired |
| US5808640A | Special geometry ink jet resistor for high dpi/high frequency structures | Performing Operations; Transporting | 22 | Expired |
| US6209991A | Transition metal carbide films for applications in ink jet printheads | Performing Operations; Transporting | 13 | Expired |
| US7025894B2 | Fluid-ejection devices and a deposition method for layers thereof | Performing Operations; Transporting | 12 | Expired |
| US6485128B1 | Ink jet pen with a heater element having a contoured surface | Performing Operations; Transporting | 8 | Expired |
| US6273555A | High efficiency ink delivery printhead having improved thermal characteristics | Performing Operations; Transporting | 8 | Expired |
| US5681764A | Method for forming a bipolar integrated ink jet printhead driver | Performing Operations; Transporting | 8 | Expired |
| US7517060B2 | Fluid-ejection devices and a deposition method for layers thereof | Performing Operations; Transporting | 5 | Active |
| US6974548B2 | Printhead having a thin film membrane with a floating section | Performing Operations; Transporting | 3 | Expired |
| US6626523B2 | Printhead having a thin film membrane with a floating section | Performing Operations; Transporting | 2 | Expired |
| US6772716B2 | Method and system for controlling a cooling system of an internal-combustion engine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US7213589B2 | Compressed-gas gun | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US6365611B1 | Pentaerythrite derivatives, the production and use thereof and intermediate products for the synthesis of the same | Chemistry; Metallurgy | 1 | Expired |
| US6180664A | Pentaerythritol derivatives, their production and use and intermediates for their synthesis | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.