Is eSilicon  a subsidiary of Nokia? They are in the same Allentown location, the Roma Corporate Center.

Since its founding in 2000 eSilicon has received a total of $86M in venture capital.[2] In 2002 eSilicon became widely known as the supplier of a key Apple Inc. iPod ASIC through PortalPlayer.[3] 2004 revenues reached $91M largely driven by ASICs for the iPod. In 2006 Apple announced that they were changing their iPod ASIC strategy and eSilicon no longer supplies ASICs for the iPod.[4] Following the loss of the iPod business eSilicon diversified its customer base and announced in May 2008 that they were profitable and shipping ASICs to over 50 customers.[5] In January 2008 eSilicon acquired the assets of Swedish-based Ethernet networking switch supplier SwitchCore AB and announced that they would seek further acquisitions.[6] Rumors of eSilicon preparing to file for an IPO have circulated on and off since 2003.[7][8][9]

In 2011, eSilicon started the MoZAIC™ “Modular Z-axis Integrated Circuit” 2.5D ASIC program to analyze new approaches that would provide more bandwidth for customers. This includes the development of an HBM PHY in 28nm and finFET technologies as well as the study of 2.5D packaging. eSilicon has completed seven test chips to date that verify the HBM PHY IP and assemble a supply chain ecosystem in support of 2.5D integration — design, verification, test and reliability. eSilicon has multiple 14/16nm finFET 2.5D ASICs in design, with several entering production in the first half of 2018.