Rambus Suit Targets 3 Memory Chip Rivals

Rambus Inc. filed a lawsuit that claims Micron Technology Inc., Hynix Semiconductor Inc. and Infineon Technologies conspired to fix prices and keep Rambus out of the memory chip market.

Rambus is already suing the firms for patent infringement after they refused to sign licensing deals. Each has in turn accused Rambus of fraud in obtaining patents to get royalties from an industry standard.

The suit opens a new front in the years-long battle by Los Altos, Calif.-based Rambus to collect royalties on its technology.