PFU LIMITED
684Patents
493Active
684Granted
58Portfolio score
Filing activity: Dec 18, 1987 → Jun 11, 2024 · 103 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5504650A | Heat sink for cooling a heat producing element and application | Electricity | 398 | Expired |
| USD610582S1 | Information terminal | General | 109 | Expired |
| US5890217A | Coherence apparatus for cache of multiprocessor | Physics | 87 | Expired |
| US4954969A | System for processing various types of information in easily usable form | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5031091A | Channel control system having device control block and corresponding device control word with channel command part and I/O command part | Physics | 79 | Expired |
| US5951683A | Multiprocessor system and its control method | Physics | 68 | Expired |
| USD717289S1 | Smart phone stand with communication and lamp function | General | 68 | Active |
| USD605189S1 | Computer terminal | General | 67 | Expired |
| US6067227A | Heat sink for cooling a heat producing element and application | Electricity | 61 | Expired |
| USD661293S1 | Computer terminal | General | 59 | Active |
| USD475052S1 | Image reader for a computer | General | 58 | Expired |
| USD605191S1 | Computer terminal | General | 58 | Expired |
| USD549705S1 | Scanner | General | 57 | Expired |
| US6172422A | Semiconductor device and a manufacturing method thereof | Electricity | 56 | Expired |
| US5493507A | Digital circuit design assist system for designing hardware units and software units in a desired digital circuit, and method thereof | Physics | 56 | Expired |
| USD563413S1 | Scanner | General | 55 | Expired |
| US6246991A | Will information management and disclosure system and method, and program storage medium thereof | Physics | 53 | Expired |
| US6568674B2 | Paper feeding apparatus | Performing Operations; Transporting | 53 | Expired |
| USD516069S1 | Identification image scanner and router | General | 53 | Expired |
| USD669089S1 | Touch panel for scanner with graphical user interface | General | 52 | Active |
| USD668259S1 | Touch panel for scanner with graphical user interface | General | 50 | Active |
| US6707584B1 | Image scanner | Electricity | 46 | Expired |
| US5583316A | Heat-generating element cooling device | Electricity | 46 | Expired |
| USD605190S1 | Computer terminal | General | 44 | Expired |
| US5434790A | Versatile production system and pallet used for the system | Emerging Cross-Sectional Technologies | 43 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.