Takashi Yamada
459Patents
38h-index
546Co-inventors
93Inventor score
Filing activity: Jul 23, 1973 → Mar 14, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5130709A | Navigation apparatus for vehicle | Physics | 297 | Expired |
| US4926336A | Route searching system of navigation apparatus | Physics | 225 | Expired |
| US6548848B2 | Semiconductor memory device | Electricity | 154 | Expired |
| US6531754B1 | Manufacturing method of partial SOI wafer, semiconductor device using the partial SOI wafer and manufacturing method thereof | Electricity | 153 | Expired |
| US5121326A | Display system in navigation apparatus | Physics | 147 | Expired |
| US5502320A | Dynamic random access memory (DRAM) semiconductor device | Electricity | 139 | Expired |
| US4937753A | Route end node series preparing system of navigation apparatus | Physics | 128 | Expired |
| US5168452A | Route exploration method of navigation apparatus | Physics | 118 | Expired |
| US5399316A | Reaction vessel for conducting an immunological assay | Emerging Cross-Sectional Technologies | 103 | Expired |
| US5191532A | Navigation apparatus | Physics | 95 | Expired |
| US4837159A | Method and apparatus for effecting immunological analysis | Emerging Cross-Sectional Technologies | 95 | Expired |
| USD462900S1 | Package | General | 90 | Expired |
| US5730850A | Capillary array electrophoresis system | Physics | 87 | Expired |
| US6185544A | Processing system for charge request data | Physics | 87 | Expired |
| US5115399A | Position input system for vehicular navigation apparatus | Physics | 81 | Expired |
| US4937048A | Carrier transporting apparatus and carrier container for use in an immunological analysis | Physics | 71 | Expired |
| US5175086A | Method for effecting heterogeneous immunological analysis | Emerging Cross-Sectional Technologies | 66 | Expired |
| US5483482A | Semiconductor memory device having bidirectional potential barrier switching element | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5094074A | Catalytic converter with metallic carrier and method for producing same | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5337174A | Optical compensator and liquid crystal display | Physics | 64 | Expired |
| US5458761A | Method for analyzing nucleic acid or protein and apparatus therefor | Physics | 63 | Expired |
| US4058796A | System for providing a driving person with helpful information for driving a vehicle | Physics | 63 | Expired |
| US5436991A | Optical waveguide device | Physics | 62 | Expired |
| US4680742A | Magneto-optical recording element | Emerging Cross-Sectional Technologies | 59 | Expired |
| US6778424B2 | Semiconductor memory device and method of manufacturing the same | Electricity | 57 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.