We are a leading designer, developer and global supplier of a broad range of analog semiconductor devices with a focus on III-V based products. We differentiate ourselves through our high performance design and integration capabilities. III-V semiconductor materials have higher electrical conductivity, enabling faster speeds and tend to have better performance characteristics than conventional silicon in applications such as radio frequency, or RF, and optoelectronics. III-V refers to elements from those groups in the periodic table of chemical elements, and examples of these materials are gallium arsenide (GaAs), gallium nitride (GaN) and indium phosphide (InP). Our product portfolio is extensive and includes approximately 6,500 products in four primary target markets: wireless communications, wired infrastructure, industrial and automotive electronics, and consumer and computing peripherals. Applications for our products in these target markets include cellular phones, consumer appliances, data networking and telecommunications equipment, enterprise storage and servers, factory automation, displays, optical mice and printers.
We have a 40-year history of innovation dating back to our origins within Hewlett-Packard Company. Over the years, we have assembled a team of approximately 1,000 analog design engineers, and we maintain highly collaborative design and product development engineering resources around the world. Our locations include two design centers in the United States, four in Asia and three in Europe. We have developed an extensive portfolio of intellectual property that currently includes more than 5,000 U.S. and foreign patents and patent applications.
We have a diversified and well-established customer base of approximately 40,000 end customers which we serve through our multi-channel sales and fulfillment system. We distribute most of our products through our broad distribution network, and we are a significant. supplier to two of the largest global electronic components distributors, Avnet, Inc. and Arrow Electronics, Inc. We also have a direct sales force focused on supporting large original equipment manufacturers, or OEMs, such as Brocade Communications Systems, Inc., Cisco Systems, Inc., Hewlett-Packard Company, International Business Machines Corp., LG Electronics Inc., Logitech International S.A. and Samsung Electronics Co., Ltd. For the six months ended May 3, 2009, our top 10 customers, which included four distributors, collectively accounted for 59% of our net revenue from continuing operations.
