Disclaimer: Some of these companies I am no longer involved or associated with and to prevent any unnecessary linking (and SEO) I’ve altered the nomenclature to something more generic. A simple Google search will show that most of these companies still exist.
All copyrights belong to their respective owners and although in some cases I do not have ownership of these works, since some of these works were created under employment/freelance/paid contractual work, I have the right to display these works in my portfolio under Fair Use doctrine. I have undeniable proof I am the original author of these works as I still have the original design files. If there were any collaborative efforts, credit will be given accordingly.