Fujitsu Denso Ltd.
14Patents
0Active
14Granted
32Portfolio score
Filing activity: Feb 21, 1989 → Mar 29, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD389817S | Fingerprint distinction reader | General | 43 | Expired |
| US6552915B2 | Communications apparatus and plug-in unit | Electricity | 34 | Expired |
| US6169675A | DC/DC converter with improved operation of plural parallel synchronous rectifiers | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6314196A | Fingerprint registering method and fingerprint checking device | Electricity | 30 | Expired |
| USD393837S | Fingerprint distinction reader | General | 29 | Expired |
| US6144511A | Optical device fixing device | Physics | 15 | Expired |
| US4912621A | Current-balance switching regulator | Electricity | 13 | Expired |
| US5995641A | Fingerprint identification device and method of using same | Physics | 10 | Expired |
| US6768651B2 | Communication device and plug-in unit therefor | Physics | 9 | Expired |
| US6430063B1 | Control switch for synchronous rectification circuit of DC-DC converter | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6275601A | Fingerprinting judging method | Physics | 6 | Expired |
| US6778417B2 | Electric-power supplying devices switching between a synchronous rectification and a diode rectification by gradually altering a switching pulse | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6122395A | Fingerprint dictionary image renewing method | Physics | 3 | Expired |
| US6361177B1 | Optical device fixing device | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.