We started 14 months ago. Papers and Patents take a bit longer than that to get through. We have two pending patents. Much of the "magic" is trade secret rather than patent because the changes in patent law are now requiring enough information for you to build the tech. We don't have the money for enforcement, so making that much IP public scares us, especially if someone like Google decided that the patent was "obvious". So we are balancing our portfolio of IP. Enough to be worth acquiring, not so much that you could dupe the work with the part that are in the public record.