Good Morning kei and all. Per 10K-"we retained 18 U.S. patents and three foreign patents that were not of use to the business we sold. The amounts that we incurred in developing these patents were fully expensed prior to the asset sale to Langley. We retained a patent consulting firm to review and analyze these patents, after which the consulting firm identified some evidence of potential use of our patented technology in several products. Our patent consulting firm is now in the process of doing an analysis with the goal of recommending a plan for monetization of our patents, which may include selling the patents, entering into to licensing arrangements or a combination of both. There is a risk that we may never be able to realize any value from these patents".
CEO also mentioned before that : those patents are primarily associated with energy storage in the form of compressed air as well as turbine technologies.