Hiroshi Tsuda
128Patents
19h-index
140Co-inventors
89Inventor score
Filing activity: Aug 23, 1974 → Feb 1, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5748109A | Apparatus and method for navigating vehicle to destination using display unit | Physics | 142 | Expired |
| US7003442B1 | Document file group organizing apparatus and method thereof | Emerging Cross-Sectional Technologies | 110 | Expired |
| US4155592A | Seat back with adjustable lumbar supporter | Performing Operations; Transporting | 78 | Expired |
| US5950187A | Document retrieving apparatus and method thereof for outputting result corresponding to highlight level of inputted retrieval key | Emerging Cross-Sectional Technologies | 64 | Expired |
| US5557522A | Apparatus and method for guiding vehicle occupant to travel from present position of vehicle to set destination through display unit | Physics | 61 | Expired |
| US5999968A | System and method for presenting shared information to network user in specific order | Electricity | 61 | Expired |
| US5945927A | Apparatus and method for navigating vehicle to destination using display unit | Physics | 47 | Expired |
| US6865715B2 | Statistical method for extracting, and displaying keywords in forum/message board documents | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5206811A | Navigation system for automotive vehicle | Physics | 39 | Expired |
| US4703502A | Stereo signal reproducing system | Electricity | 38 | Expired |
| US7359891B2 | Hot topic extraction apparatus and method, storage medium therefor | Emerging Cross-Sectional Technologies | 33 | Expired |
| US10129028B2 | Relational encryption for password verification | Electricity | 30 | Active |
| US4355837A | Glove compartment | Performing Operations; Transporting | 28 | Expired |
| US4421960A | Steering wheel with switch assembly | Performing Operations; Transporting | 28 | Expired |
| US5129004A | Automotive multi-speaker audio system with different timing reproduction of audio sound | Physics | 28 | Expired |
| US7719689B2 | AE/ultrasound detection system, and material monitoring apparatus and nondestructive inspection apparatus equipped the system | Physics | 26 | Active |
| US7109850B2 | Rumble strip responsive systems | Performing Operations; Transporting | 26 | Expired |
| US7225181B2 | Document searching apparatus, method thereof, and record medium thereof | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4257700A | Electrophotographic apparatus | Physics | 22 | Expired |
| US4694497A | Automotive multi-speaker audio system with automatic echo-control feature | Physics | 19 | Expired |
| US5195383A | Steering torque detecting device | Performing Operations; Transporting | 19 | Expired |
| US5023799A | Vehicular traveling direction measuring system | Physics | 18 | Expired |
| US5131155A | Apparatus and method for measuring forward direction of vehicle | Physics | 17 | Expired |
| US5251139A | Vehicular traveling direction measuring system | Physics | 17 | Expired |
| US4469323A | Collator with collate mode, non-collate mode and job separation mode | Performing Operations; Transporting | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.