QLOGIC Corporation
355Patents
270Active
355Granted
55Portfolio score
Filing activity: Jul 26, 1991 → Oct 21, 2015 · 143 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8898346B1 | Method and system for configuring network devices | Physics | 478 | Active |
| US7200144B2 | Router and methods using network addresses for virtualization | Electricity | 362 | Expired |
| US7197572B2 | System and method for implementing logical switches in a network system | Electricity | 313 | Expired |
| US6092231A | Circuit and method for rapid checking of error correction codes using cyclic redundancy check | Electricity | 187 | Expired |
| US6401149B1 | Methods for context switching within a disk controller | Physics | 130 | Expired |
| US7403542B1 | Method and system for processing network data packets | Electricity | 129 | Expired |
| US7447197B2 | System and method of providing network node services | Electricity | 123 | Active |
| US6810440B2 | Method and apparatus for automatically transferring I/O blocks between a host system and a host adapter | Physics | 116 | Expired |
| US6470397B1 | Systems and methods for network and I/O device drivers | Electricity | 111 | Expired |
| US6330626A | Systems and methods for a disk controller memory architecture | Physics | 107 | Expired |
| US7362702B2 | Router with routing processors and methods for virtualization | Electricity | 97 | Expired |
| US6564271B2 | Method and apparatus for automatically transferring I/O blocks between a host system and a host adapter | Physics | 95 | Expired |
| US8706905B1 | Method and system for routing information in a network | Electricity | 84 | Active |
| US6055285A | Synchronization circuit for transferring pointer between two asynchronous circuits | Electricity | 80 | Expired |
| US7983265B1 | Method and system for processing a network packet | Electricity | 75 | Active |
| US8411677B1 | Method and system for processing layered networking protocol packets | Electricity | 64 | Active |
| US7577773B1 | Method and system for DMA optimization | Electricity | 64 | Active |
| US7319669B1 | Method and system for controlling packet flow in networks | Electricity | 63 | Expired |
| US6470461B1 | Disk drive controller circuit and method for skipping defective and/or undesired sectors | Physics | 63 | Expired |
| US5627695A | System and method for generating unique sector identifiers for an identificationless disk format | Physics | 61 | Expired |
| US7009413B1 | System and method for testing ball grid arrays | Electricity | 61 | Expired |
| US8798047B1 | Methods and systems for processing network information | Electricity | 56 | Active |
| US7398335B2 | Method and system for DMA optimization in host bus adapters | Physics | 54 | Expired |
| US7292567B2 | Router and methods for distributed virtualization | Electricity | 54 | Expired |
| US7594057B1 | Method and system for processing DMA requests | Physics | 52 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.