This page in intended to serve as notice under 35 U.S.C. § 287(a).

Perforating charges are protected by U.S. Patent Nos. 8,220,394 and 8,544,563, and may be used in the methods claimed in, for example, U.S. Patent Nos. 9,080,431, 8,245,770, 9,644,460 and 8,726,995.