Rambus Incorporated (NASDAQ: RMBS), founded in 1990, is a technology licensing company. The company became well known for its intellectual property-based litigation following the introduction of DDR-SDRAM memory.

Rambus, a Californian company, was incorporated in 1990 and re-incorporated in Delaware in 1997. The company was listed on NASDAQ in 1997 under the code RMBS. As of February 2006, Rambus derived the majority of its annual revenue by licensing patents for chip interfaces to its customers.

Companies such as AMD, Elpida, Infineon, Intel, Matsushita, NECEL, Qimonda, Renesas, Sony, and Toshiba have bought licenses to Rambus patents for use in their own products.

According to the Wall Street Journal, "the company's history has been marked by litigation, including patent battles with numerous chip makers."

Rambus' share price has ranged between a high of nearly $150 in 2000 to a low of approximately $3 in 2002 with a 4:1 split on June 15, 2000. Rambus' share price in the first quarter of 2010 was between $20 and $24, giving the firm a market capitalization value of around US$2.5 billion.