MEIDENSHA CORPORATION
546Patents
293Active
546Granted
55Portfolio score
Filing activity: Feb 12, 1974 → Aug 29, 2023 · 63 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4896262A | Emulation device for converting magnetic disc memory mode signal from computer into semiconductor memory access mode signal for semiconductor memory | Physics | 229 | Expired |
| US4618989A | Method and system for detecting elliptical objects | Physics | 176 | Expired |
| US4716530A | System for automatically controlling movement of unmanned vehicle and method therefor | Physics | 145 | Expired |
| US5360156A | Welding management apparatus | Performing Operations; Transporting | 94 | Expired |
| US4824563A | Equipment for treating waste water | Chemistry; Metallurgy | 94 | Expired |
| US4922782A | Manipulator shoulder mechanism | Emerging Cross-Sectional Technologies | 88 | Expired |
| US7523011B2 | Method for analyzing signal waveform and analyzing vehicle dynamic characteristic | Physics | 80 | Active |
| US4597844A | Coating film and method and apparatus for producing the same | Emerging Cross-Sectional Technologies | 76 | Expired |
| US4520443A | Control device for loading and unloading mechanism | Performing Operations; Transporting | 68 | Expired |
| US5668506A | Temperature compensated crystal oscillator | Electricity | 63 | Expired |
| US5223218A | Instrument for quantitative analysis | Physics | 61 | Expired |
| USD902277S1 | Automated guided vehicle | General | 60 | Active |
| USD372017S | Inverter | General | 57 | Expired |
| US5682073A | Hybrid excitation type permanent magnet synchronous motor | Electricity | 55 | Expired |
| USD828844S1 | Display screen with animated graphical user interface | General | 54 | Active |
| US5061578A | Electrolyte circulation type secondary battery operating method | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6008616A | Pole change induction motor and control apparatus and method for the same | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5852554A | Power inverter having three or more parallel driven PWM-type power inverting units | Electricity | 38 | Expired |
| US4665487A | Unmanned vehicle control system and method | Physics | 36 | Expired |
| US4617675A | Digital PWMed pulse generator | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4517645A | Control device for loading and unloading mechanism | Physics | 36 | Expired |
| US5528728A | Speaker independent speech recognition system and method using neural network and DTW matching technique | Physics | 35 | Expired |
| US5548252A | Digital temperature compensated crystal oscillator | Electricity | 33 | Expired |
| US5223683A | High frequency electronic welding system | Performing Operations; Transporting | 33 | Expired |
| US4614693A | Metal-halogen secondary battery | Emerging Cross-Sectional Technologies | 33 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.