Westell Technologies, Inc.
🏢 View company profile →22Patents
3Active
22Granted
35Portfolio score
Filing activity: Mar 12, 1998 → Aug 12, 2010 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7218722B1 | System and method for providing call management services in a virtual private network using voice or video over internet protocol | Electricity | 122 | Expired |
| US6181775A | Dual test mode network interface unit for remote testing of transmission line and customer equipment | Electricity | 78 | Expired |
| US6278769A | Signaling method for invoking a test mode in a network interface unit | Electricity | 76 | Expired |
| US6718030B1 | Virtual private network system and method using voice over internet protocol | Electricity | 53 | Expired |
| US7305006B1 | System for allowing a single device to share multiple transmission lines | Electricity | 43 | Expired |
| US6144735A | Filters for a digital subscriber line system for voice communication over a telephone line | Electricity | 36 | Expired |
| US6137880A | Passive splitter filter for digital subscriber line voice communication for complex impedance terminations | Electricity | 30 | Expired |
| US6212258A | Device for remotely testing a twisted pair transmission line | Electricity | 27 | Expired |
| US6115466A | Subscriber line system having a dual-mode filter for voice communications over a telephone line | Electricity | 21 | Expired |
| US7092375B2 | Modem having flexible architecture for connecting to multiple channel interfaces | Electricity | 16 | Expired |
| US6477250B1 | Adjustable hybrid having dial tone alignment configuration | Electricity | 12 | Expired |
| US7565079B2 | System and method for optical network demarcation | Electricity | 6 | Active |
| US7406117B2 | XDSL multi-hybrid modem with power spectral density shaping | Electricity | 5 | Expired |
| US7360137B2 | Flash programmer for programming NAND flash and NOR/NAND combined flash | Physics | 5 | Active |
| US7076030B2 | Method and system for testing XDSL wiring | Electricity | 5 | Expired |
| US7106854B2 | XDSL system having selectable hybrid circuitry | Electricity | 4 | Expired |
| US6453432B1 | Method and system for communicating the status of a digital transmission line element during loopback | Electricity | 3 | Expired |
| US8346808B2 | System and method of accessing resources in a computer network | Electricity | 2 | Active |
| US7301894B1 | Method for providing fault tolerance in an XDSL system | Electricity | 1 | Expired |
| US7145943B2 | XDSL system with improved impedance circuitry | Electricity | 1 | Expired |
| US6188763A | Signal processing unit for network interface unit | Electricity | 0 | Expired |
| US6359527B1 | Determining waveshaper attenuation settings for network interface unit | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.