The following products offered for sale by Presby Environmental, Inc. and/or its affiliates (“PEI”) are covered by one or more claims of patents and/or patents pending in the United States, Canada and elsewhere. This webpage provides virtual patent marking notice, e.g., under 35 U.S.C. § 287(a). The following list of PEI products may not be all-inclusive, and other PEI products not listed here may be protected by one or more patents in the U.S.,  Canada and elsewhere.  The reader is hereby placed on notice of PEI’s rights in the Patents listed on this site and associated with the following products:

Advanced Enviro-Septic®, Enviro-Septic® and Simple-Septic® TechnologyProtected by U.S. Patents: 6,290,429; 6,792,977; 6,899,359; 8,342,212; 8,501,006; 8,815,094; 8,999,153; 9,556,604. Protected by Canadian Patents: 2,187,126; 2,286,995;  2,300,535; 2,359,255; 2,365,453; 2,415,194; 2,609,409. Protected by Australian Patent: 2011256246; 2014203175.  Additional patents may be pending in the U.S. and elsewhere.

EnviroFin®: Patent pending in the U.S. and elsewhere.

De-Nyte®: Protected by U.S. Patents: 7,288,190; 7,713,414. Protected by Canadian Patent: 2,577,086. Additional patents may be pending in the U.S. and elsewhere.

Spec-Check®: Protected by U.S. Patents: 8,807,345; 9,192,941.   Protected by New Zealand Patent: 613998. Protected by Australian Patent: 2012214567. Additional patents may be pending in the U.S. and elsewhere.