Describe the work that remains to be done (questions that would have to be answered) before a company or business unit would find this invention of interest. Just as financiers (angels and venture capitalists) charge more for money to be invested in unproven ideas (they call it "seed capital"), so technology managers must know the development status of an invention to make good decisions about the future allocation of scarce resources.
Has the technical feasibility of the invention been proven? At what scale (e.g., bench, pilot, full)? Has an engineering prototype been constructed and tested? Under what conditions was it tested? Have you sold any? (Warning! Offering to sell or selling a product that incorporates an invention can affect the patentability of the invention in certain jurisdictions. Selling or offering to sell a license to practice the invention does not have the same effect.)