# US 11,078,447 B1 · Multi-purpose surface cleaner

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- Number: US 11,078,447 B1
- Document ID: US11078447B1
- Status: Granted
- Kind: B1
- Application number: 16/505,868
- Filed: 2019-07-09
- Granted: 2021-08-03
- Earliest claimed: 2018-07-09
- Applicants: W. Curt Brandau
- Inventors: W. Curt Brandau
- Web page: https://patentgrep.com/patent/US11078447B1

## CPC

- C11D 3/3932: {Inorganic compounds or complexes}
- C11D 7/12: Carbonates {bicarbonates}
- C11D 3/046: {Salts}
- C11D 3/10: Carbonates {; Bicarbonates}
- C11D 3/2093: {Esters; Carbonates}
- C11D 3/3947: {Liquid compositions}
- C11D 7/06: Hydroxides
- C11D 2111/14: Hard surfaces
- C11D 2111/16: Metals
- C11D 2111/18: Glass; Plastics
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

A multi-purpose surface cleaning solution includes sodium percarbonate having a chemical formula of 2Na2CO3.3H2O2 that may be selectively provided in a range of concentrations, from 0.001% through 99.997%. In an aqueous solution, sodium percarbonate decomposes and yields soda ash [Na2CO3] and hydrogen peroxide [H2O2], with additional decomposition of hydrogen peroxide to water [H2O] and diatomic oxygen [O2]. The combination of soda ash, hydrogen peroxide, and diatomic oxygen chemically weaken and release the bonds of the contaminants from the surface(s) to which the contaminants have become attached.

## Claims

### Claim 1

A method of removing residue and contaminants from an interior of a smoking pipe article, the steps comprising:
closing openings or holes in the article except for one opening or hole;
introducing approximately 0.5 ounces (14 grams by weight) of a surface cleaning solution into the article, the surface cleaning solution comprising sodium percarbonate (2Na2CO3.3H2O2), the sodium percarbonate dissolved in a solvent producing an aqueous solution promoting decomposition of the sodium percarbonate yielding soda ash (Na2CO3) and hydrogen peroxide (H2O2);
adding boiling water inside of the article until the article is filled with the water;
soaking the article for approximately 30 minutes; and
rinsing the article with running water to remove loosened debris or residue.

### Claim 2 (depends on 1)

The steps of claim 1 further comprising repeating the steps to remove any remaining contaminant or residue from the article.