Yukio Murata
61Patents
12h-index
51Co-inventors
87Inventor score
Filing activity: Jun 30, 1980 → Oct 2, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4437811A | Submersible pump with alternate pump operation control means | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| US5212722A | Hands-free telephone having a handset volume attenuator for controlling speaker volume in a hands-free adaptor | Electricity | 40 | Expired |
| US5509067A | Method and apparatus for speed dialing via one-touch and two-touch operation | Electricity | 37 | Expired |
| US8116506B2 | Speaker, image element protective screen, case of terminal and terminal | Electricity | 28 | Active |
| US4782202A | Method and apparatus for resistance adjustment of thick film thermal print heads | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5563495A | Charging circuit with battery charge monitor circuit | Electricity | 19 | Expired |
| US5701354A | Telephone mouthpiece for preventing wind noises and method for reducing wind noises input thereto | Electricity | 16 | Expired |
| US5826683A | Magnetostrictive brake | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4613947A | Method of measuring color difference of dyestuffs | Physics | 14 | Expired |
| US4635213A | Method of estimating the result of coloration and of reproducing a given color | Physics | 14 | Expired |
| US4922547A | Microphone circuit | Electricity | 13 | Expired |
| US4799110A | Image signal coding apparatus | Physics | 12 | Expired |
| US5566254A | Apparatus for processing multiple images in alternating fashion | Electricity | 11 | Expired |
| US5875037A | Communication apparatus | Electricity | 9 | Expired |
| US8139762B2 | Electronic device and acoustic playback method | Electricity | 8 | Active |
| US4750043A | Decoding apparatus for image code | Electricity | 8 | Expired |
| US5170491A | Power source switch circuit | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5379450A | Radio loudspeaker telephone device capable of automatically preventing howling on execution of calling operation | Electricity | 8 | Expired |
| US5748774A | Image processing method and apparatus having a plurality of image processing modes | Electricity | 7 | Expired |
| US5992296A | Hydraulic pump | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4597670A | Method of measuring color difference of dyestuffs | Physics | 5 | Expired |
| US5151645A | Charge device capable of lengthening a lifetime of a storage cell | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7742201B2 | Control method for document scanning device | Electricity | 5 | Expired |
| US9179214B2 | Audio equipment and oscillation unit | Electricity | 5 | Active |
| US7139088B2 | Communication apparatus and communication method | Electricity | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.