Ryuichi Ugajin
25Patents
9h-index
12Co-inventors
68Inventor score
Filing activity: Jan 10, 1992 → Feb 18, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5229320A | Method for forming quantum dots | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5608231A | Field effect transistor having channel with plural quantum boxes arranged in a common plane | Electricity | 43 | Expired |
| US6353689B1 | Apparatus for and method of processing image and information recording medium | Physics | 42 | Expired |
| US5332952A | Quantum phase interference transistor | Electricity | 20 | Expired |
| US5663571A | Quantum memory | Performing Operations; Transporting | 18 | Expired |
| US5719407A | Collective element of quantum boxes | Electricity | 17 | Expired |
| US5831294A | Quantum box structure and carrier conductivity modulating device | Electricity | 17 | Expired |
| US5204588A | Quantum phase interference transistor | Electricity | 11 | Expired |
| US5289077A | Microelectronic ballistic transistor | Electricity | 11 | Expired |
| US5643828A | Manufacturing method of a quantum device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5512762A | Quantum device with plural stable states | Electricity | 6 | Expired |
| US6392914B1 | Storage device encompassing a diffusion process and a dissipation process of information carriers and storage method thereof | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5294807A | Quantum effect device in which conduction between a plurality of quantum dots or wires is achieved by tunnel transition | Electricity | 5 | Expired |
| US6525337B1 | Light and/or electron element | Electricity | 5 | Expired |
| US6584234B2 | Apparatus for and method of processing image and information recording medium | Physics | 3 | Expired |
| US5828090A | Charge transfer device | Electricity | 3 | Expired |
| US7113931B1 | Method of fabricating a fractal structure for constructing complex neural networks | Physics | 3 | Expired |
| US6581002B2 | Information processing method and information processing apparatus | Physics | 2 | Expired |
| US7101434B2 | Fractal structure and its forming method | Electricity | 2 | Expired |
| US5430309A | Data processing system formed of a collective element of quantum boxes and method of operation thereof | Electricity | 2 | Expired |
| US6020605A | Quantum box structure and carrier conductivity modulating device | Electricity | 2 | Expired |
| US7061007B1 | Ferromagnetic fractal combination structure | Electricity | 1 | Expired |
| US6759676B2 | Multiply-complexed one-dimensional structure, multiply-twisted helix, multiply-looped ring structure and functional material | Electricity | 0 | Expired |
| US6952019B2 | Electron device which controls quantum chaos and quantum chaos controlling method | Electricity | 0 | Expired |
| US7135071B2 | Fractal structure and method of forming it | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.