Nokia Technology
70Patents
0Active
70Granted
39Portfolio score
Filing activity: Oct 16, 1992 → Feb 3, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5812608A | Method and circuit arrangement for processing received signal | Electricity | 114 | Expired |
| US5559891A | Device to be used for changing the acoustic properties of a room | Physics | 48 | Expired |
| US6148103A | Method for improving contrast in picture sequences | Physics | 46 | Expired |
| US6493043B1 | Method of increasing the storage capacity of service information in a digital TV transmissions receiver | Electricity | 45 | Expired |
| US6125124A | Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions | Electricity | 43 | Expired |
| US6160898A | Suspension mount for sound reproduction devices according to the flexural wave principle | Electricity | 41 | Expired |
| US6094722A | Hiding a authentication code in an electric signal | Electricity | 40 | Expired |
| US6314111A | Method for transmission of address data | Electricity | 40 | Expired |
| US5509081A | Sound reproduction system | Electricity | 34 | Expired |
| US6008692A | Carrier wave synchronization for multi-level two-dimensional modulation alphabets | Electricity | 33 | Expired |
| US5987063A | Method for compensating channel errors in a digital data communication system | Electricity | 30 | Expired |
| US5898786A | Loudspeakers | Electricity | 30 | Expired |
| US6091440A | Implementation of delay-critical services in a cable television system | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5402503A | Light-weight conical loudspeaker | Electricity | 28 | Expired |
| US5355412A | Identifying secret data messages in a one-direction multipoint network | Electricity | 26 | Expired |
| US5485524A | System for processing an audio signal so as to reduce the noise contained therein by monitoring the audio signal content within a plurality of frequency bands | Electricity | 23 | Expired |
| US5657211A | Method and circuit for controlling the output characteristics of a switched-mode power supply | Electricity | 21 | Expired |
| US5703337A | System for cancelling sound waves | Physics | 20 | Expired |
| US6005953A | Circuit arrangement for improving the signal-to-noise ratio | Electricity | 19 | Expired |
| US5466899A | Arrangement for active sound damping | Physics | 18 | Expired |
| US5978235A | Primary adjusted switched-mode power supply | Electricity | 18 | Expired |
| US5378946A | Arrangement for temporal detection of a signal edge of an electrical signal transmitted over a transmission line | Electricity | 13 | Expired |
| US7086082B1 | Implementation of delay-critical services in a cable television system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5917479A | Method for reducing power consumption in a monitor | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5949661A | Simple current limiting coupling for regulating the output current of a power supply | Emerging Cross-Sectional Technologies | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.