Virtual Patent Marking Notice by PowerTech Water, Inc. The following products are protected by patents in the U.S. and elsewhere for PowerTech Water, Inc. This website is provided to satisfy the virtual patent marking provisions of various jurisdictions and is intended to serve as notice under 35 U.S.C. §287(a). The following list of products and patents may be covered by one or more patents in the U.S. and internationally, and may not be all-inclusive. Additional patent applications may also be pending in the U.S. and internationally.