Silicon Valley Research Inc, Mountain View developer of a line of integrated placement, routing and floorplanning physical layout software products to enable electronics manufacturers to achieve improved performance and smaller die size in their integrated circuit designs, has filed with the US Securities & Exchange Commission to offer 4.2m shares, assuming a one-for-two reverse stock split, 2m of them new; selling shareholders include all of the Intergraph Corp, selling all its 22.4% stake. The proceeds will be used for working capital and capital expenditure. Hambrecht & Quist LLC will be lead manager of the underwriting group with Needham & Co Inc and Unterberg Harris as the co-managers.