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:
Feb. 27, 1996
Filed:
Apr. 21, 1994
Applicant:
Inventors:
Jerome H Ludwig, Paradise Valley, AZ (US);
Edward C Perry, Phoenix, AZ (US);
Assignee:
H.E.R.C. Products Incorporated, Phoenix, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ; C02F / ; C23G / ;
U.S. Cl.
CPC ...
134-3 ; 134 2212 ; 134 2214 ; 134 2218 ; 134 2219 ; 134 29 ; 134 41 ; 252 87 ;
Abstract
A method of cleaning and maintaining a hot water heater tank contaminated with water scale and sediment by introducing an aqueous acidic treatment solution, retaining the acidic solution for a sufficient time to dissolve or suspend said scale and sediment, and then draining the spent solution containing the dissolved or suspended scale and sediment to provide a clean hot water heater tank.