CLARION CO., LTD.
1,063Patents
460Active
1,063Granted
54Portfolio score
Filing activity: Oct 2, 1973 → Dec 15, 2020 · 95 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5581621A | Automatic adjustment system and automatic adjustment method for audio devices | Electricity | 227 | Expired |
| US5168508A | Spread spectrum receiver | Electricity | 178 | Expired |
| US5293398A | Digital matched filter | Electricity | 165 | Expired |
| US5173686A | Sliding accommodation type liquid crystal display device | Emerging Cross-Sectional Technologies | 143 | Expired |
| US5204817A | Car mounted navigation system | Physics | 138 | Expired |
| US6268837A | Display control device and method | Physics | 126 | Expired |
| US7429998B2 | Method and apparatus for monitoring vehicle rear, and signal processor | Performing Operations; Transporting | 121 | Expired |
| US6324450A | Mobile object information recording apparatus | Electricity | 121 | Expired |
| US4250524A | Validation apparatus in a pay television system | Electricity | 120 | Expired |
| US4691326A | Spread-spectrum communication system | Electricity | 118 | Expired |
| US4369462A | Coding system for pay television | Electricity | 110 | Expired |
| US5734973A | Radio receiver for selectively receiving signals at frequencies of previously stored broadcast stations | Electricity | 99 | Expired |
| US8634984B2 | Navigation system | Physics | 83 | Active |
| US5291515A | Spread spectrum communication device | Electricity | 77 | Expired |
| US5548828A | RDS audio receiver having interrupt mode | Electricity | 77 | Expired |
| US7689931B2 | Display control device | Physics | 71 | Active |
| USD625306S1 | Handheld computer terminal | General | 68 | Expired |
| US4490842A | Headrest speaker device | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5204877A | Spread spectrum modulating device | Electricity | 61 | Expired |
| US5574754A | Sliding correlator | Electricity | 57 | Expired |
| US4408095A | Acoustic apparatus | Electricity | 56 | Expired |
| US4441577A | Direction-variable speaker system | Electricity | 55 | Expired |
| US4477127A | Tape player for vehicles | Physics | 55 | Expired |
| US4688248A | Pay television system | Electricity | 54 | Expired |
| US4745378A | Surface acoustic wave device | Electricity | 53 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.