Note 7 - Commitments and Contingencies Royalty Agreements On July 1, 2008, our wholly owned subsidiary entered into Patent Assignment Agreements with two parties, our President and Technology Development Supervisor, where certain devices and methods involved in the hydrodynamic cavitation processes invented by the President and the Technology Development Supervisor have been assigned to the Subsidiary.In exchange, the Subsidiary agreed to pay a royalty of 5% of gross revenues to each of the President and Technology Development Supervisor for licensing of the technology and leasing of the related equipment embodying the technology. These agreements were subsequently assumed by Cavitation Technologies on May 13, 2010 from its subsidiary.The Company's President and Technology Development Supervisor both waived their rights to receive royalty payments that have accrued, or that may accrue, on any gross revenue generated through December 31, 2016. On April 30, 2008 and as amended on November 22, 2010, our wholly owned subsidiary entered into an employment agreement with our former Director of Chemical and Analytical Department (the "Inventor") to receive an amount equal to 5% of actual gross royalties received from the royalty stream in the first year in which the Company receives royalty payments from the patent which the Inventor was the legally named inventor, and 3% of actual gross royalties received by the Company resulting from the patent in each subsequent year. As of December 31, 2016, no patents have been granted in which this person is the legally named inventor. Litigation The Company may be involved in certain legal proceedings that arise from time to time in the ordinary course of its business. Except for income tax contingencies (commencing April 1, 2009), the Company records accruals for contingencies to the extent that management concludes that the occurrence is probable and that the related amounts of loss can be reasonably estimated. Legal expenses associated with the contingency are expensed as i