The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 1997
Filed:
Feb. 24, 1995
Frank J Steer, Racine, WI (US);
Mark M Gipp, Racine, WI (US);
S. C. Johnson & Son, Inc., Racine, WI (US);
Abstract
Methods of substantially removing a restriction from a drain pipe system include the steps of introducing a cleaning composition containing a non-caustic drain opening active to the pipe system, activating the cleaning composition by adding a sufficient amount of liquid to the drain pipe system while maintaining a flow-through state through the pipe system, allowing the drain opening active to remain in contact with the restriction for a sufficient time to substantially degrade the restriction, and rinsing the drain opening active from the pipe system. The water flow rate through the pipe system is improved by at least 0.7 liters/minute after 16 hours of the drain opening active contacting the restriction. These methods are effective for both clogged and slow-running drains.