Yoshikazu Akiyama
31Patents
10h-index
41Co-inventors
75Inventor score
Filing activity: Nov 10, 1988 → Dec 23, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4883766A | Method of producing thin film transistor | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5555219A | Ferroelectric material, and semiconductor memory, optical recording medium and micro-displacement control device using the ferroelectric material | Chemistry; Metallurgy | 25 | Expired |
| US7166689B2 | Aryl amine polymer, thin film transistor using the aryl amine polymer, and method of manufacturing the thin film transistor | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6874898B2 | THIN FILM APPARATUS, A MANUFACTURING METHOD OF THE THIN FILM APPARATUS, AN ACTIVE MATRIX SUBSTRATE, A MANUFACTURING METHOD OF THE ACTIVE MATRIX SUBSTRATE, AND AN ELECTRO-OPTICAL APPARATUS HAVING THE ACTIVE MATRIX SUBSTRATE | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7316964B2 | Active matrix substrate, a manufacturing method of the active matrix substrate | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5610853A | Ferroelectric material, and semiconductor memory, optical recording medium and micro-displacement control device using the ferroelectric material | Chemistry; Metallurgy | 17 | Expired |
| US5729262A | Ink jet head including phase transition material actuators | Performing Operations; Transporting | 16 | Expired |
| US7765686B2 | Multilayer wiring structure and method of manufacturing the same | Emerging Cross-Sectional Technologies | 14 | Active |
| US6721654B2 | Navigation system and memory medium storing the position data of the specific facilities | Physics | 14 | Expired |
| US7422964B2 | Manufacturing method of the active matrix substrate, and an electro-optical apparatus having the active matrix substrate | Emerging Cross-Sectional Technologies | 13 | Active |
| US7126153B2 | Organic transistor | Electricity | 10 | Expired |
| US7550554B2 | Aryl amine polymer, thin film transistor using the new aryl amine polymer, and method of manufacturing the thin film transistor | Emerging Cross-Sectional Technologies | 8 | Active |
| US8454133B2 | Inkjet head, inkjet recording apparatus, liquid droplet ejecting apparatus, and image forming apparatus | Performing Operations; Transporting | 7 | Active |
| US8646180B2 | Method for producing electromechanical transducer, electromechanical transducer produced by the method, liquid-droplet jetting head, and liquid-droplet jetting apparatus | Emerging Cross-Sectional Technologies | 6 | Active |
| US8602530B2 | Ink-jet head and ink-jet recording apparatus | Performing Operations; Transporting | 6 | Active |
| US9950524B2 | PZT-film laminated structure, liquid discharge head, liquid discharge device, liquid discharge apparatus, and method of making PZT-film laminated structure | Performing Operations; Transporting | 6 | Active |
| US9401471B2 | Electromechanical transducing device and manufacturing method thereof, and liquid droplet discharging head and liquid droplet discharging apparatus | Performing Operations; Transporting | 6 | Active |
| US8425026B2 | Electromechanical transducer film and method for manufacturing electromechanical transducer film | Electricity | 5 | Active |
| US8727505B2 | Electromechanical transducer element, droplet discharge head, and droplet discharge device | Performing Operations; Transporting | 5 | Active |
| US8690297B2 | Sol-gel liquid, electromechanical conversion element, liquid discharge head and inkjet recorder | Performing Operations; Transporting | 4 | Active |
| US9595660B2 | Method of manufacturing electromechanical transducer, electromechanical transducer, droplet discharge head, droplet discharge apparatus, and image forming apparatus | Emerging Cross-Sectional Technologies | 4 | Active |
| US8733906B2 | Electromechanical conversion element, liquid drop ejection head, liquid drop ejection device, and image forming apparatus | Electricity | 4 | Active |
| US8919926B2 | Inkjet head and inkjet plotter | Performing Operations; Transporting | 3 | Active |
| US8960866B2 | Electromechanical transducer element, liquid discharge head, liquid discharge device, and image forming apparatus | Electricity | 2 | Active |
| US7420204B2 | Organic transistor | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.