(Reuters)- German chip maker Infineon Technology AG said it would make an announcement on Tuesday about a cooperation agreement with two leading chip makers. "Infineon and two leading firms in the semiconductor industry will announce a joint business and technology model," the company said in an invitation. It declined to provide further information about the event, other than to say leading representatives of the three firms would attend a press briefing in Munich. Some analysts speculated that Infineon would announce some kind of research and development agreement, similar to a joint research project between Motorola, Philips and STMicroelectronics on June 6, to get next generation microchips rolling out in larger quantities and at lower cost.