Toru Yamada
177Patents
19h-index
153Co-inventors
89Inventor score
Filing activity: Feb 2, 1987 → May 19, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6222431A | Balanced dielectric filter | Electricity | 57 | Expired |
| US6586786B2 | High frequency switch and mobile communication equipment | Electricity | 57 | Expired |
| US6603372B1 | Laminated notch filter and cellular phone using the same | Electricity | 47 | Expired |
| US6456172B1 | Multilayered ceramic RF device | Electricity | 47 | Expired |
| US6831951B2 | Image data processing apparatus and motion compensation processing method used therefor, and recording medium | Electricity | 47 | Expired |
| US6965284B2 | Dielectric filter, antenna duplexer | Electricity | 47 | Expired |
| US6570469B2 | Multilayer ceramic device including two ceramic layers with multilayer circuit patterns that can support semiconductor and saw chips | Electricity | 45 | Expired |
| USD772184S1 | Semiconductor module | General | 43 | Active |
| US6147571A | Dual-band multilayer bandpass filter | Electricity | 35 | Expired |
| US6985712B2 | RF device and communication apparatus using the same | Electricity | 34 | Expired |
| USD810706S1 | Semiconductor module | General | 33 | Active |
| US5581141A | Surface acoustic wave filter | Electricity | 30 | Expired |
| US6784765B2 | Multilayer ceramic device | Electricity | 28 | Expired |
| US6085071A | Antenna duplexer | Electricity | 28 | Expired |
| US8741461B2 | Battery pack having waterproof structure | Emerging Cross-Sectional Technologies | 28 | Active |
| US6104260A | Surface acoustic wave filter with first and second filter tracks and balanced or unbalanced terminals | Electricity | 26 | Expired |
| US4835716A | Compact measuring apparatus capable of measuring two different data with a single pressure sensor | Performing Operations; Transporting | 26 | Expired |
| US5932950A | Surface acoustic wave filter | Electricity | 22 | Expired |
| US6975841B2 | Diplexer, and high-frequency switch and antenna duplexer using the same | Electricity | 19 | Expired |
| US6822534B2 | Laminated electronic component, laminated duplexer and communication device | Electricity | 18 | Expired |
| US6839384B2 | Method and apparatus for decoding compressed video signals | Electricity | 17 | Expired |
| US6750737B2 | High frequency switch and radio communication apparatus with layered body for saw filter mounting | Electricity | 17 | Expired |
| US6202122A | Facsimile apparatus using a memory device with reloadable memory block having variable data occupancy rate | Electricity | 17 | Expired |
| US6696903B1 | Laminated dielectric filter, and antenna duplexer and communication equipment using the same | Electricity | 16 | Expired |
| US5990762A | Surface acoustic wave filter and multistage filter with multiple inside busbar lead-out electrodes | Electricity | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.