Eg - Texas Instruments, Qualcomm + NXP, Apple, Intel, AMD, Applied Materials, Cisco, Xilinx, Analog Devices, GlobalFoundries, Maxim, Microchip Tech + Microsemi, KLA-Tencor, Lam Research, Marvell, Broadcom, Micron, nVidia, Teradyne, Cypress, On Semi, Praxair, Skyworks, Ambarella, Cirrus Logic, Diodes Inc, Integrated Device Tech, IPG Photonics, Semtech, Qorvo, Cavium, Mellanox (US-Israeli), Inphi, Monolithic Power, Lumentum
Now you've even got Microsoft, Google, Facebook, Amazon looking into/working on their own chips.