# US 10,119,038 B2 · Patina solution, method for producing patina on object, and patina kit

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- Number: US 10,119,038 B2
- Document ID: US10119038B2
- Status: Granted
- Kind: B2
- Application number: 15/148,790
- Filed: 2016-05-06
- Published: 2016-11-10
- Granted: 2018-11-06
- Earliest claimed: 2015-05-08
- Assignees: PatinaNow, LLC
- Applicants: PatinaNow, LLC
- Inventors: Gregory B. Donnelly
- Web page: https://patentgrep.com/patent/US10119038B2

## CPC

- C09D 7/43: Thickening agents
- C09D 5/28: for wrinkle, crackle, orange-peel, or similar decorative effects
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

Compositions, methods, and kits for treating a surface of an object made of copper or a copper alloy to produce a patina thereon. One composition includes a mild acid solution and a powdered salt in a concentration of up to about one pound per gallon of mild acid solution. One method includes treating a surface of an object made of copper or a copper alloy by applying a patina composition to the surface, the patina composition comprising a mild acid solution and a powdered salt in a concentration of up to about one pound per gallon of mild acid solution, allowing the patina composition to remain in contact with the surface for a predetermined amount of time sufficient to permit the patina composition to chemically react with the copper or copper alloy surface to produce patina, and applying water to the surface to remove residual patina composition from the surface.

## Claims

### Claim 1

A composition for forming patina on an object having a surface made of copper or a copper alloy, the composition comprising:
a mild acid solution; and
a salt in a concentration of up to about one pound per gallon of mild acid solution, the salt being in powder form when combined with the mild acid solution;
wherein the salt is powdered such that the powdered salt has a particle size that passes through a 40 mesh U.S. standard sieve.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the mild acid solution has a pH between about two and three.

### Claim 3 (depends on 2)

The composition of claim 2, wherein the pH of the mild solution is in a range between about 2.3 and 2.6.

### Claim 4 (depends on 2)

The composition of claim 2, wherein the mild acid solution comprises vinegar.

### Claim 5 (depends on 4)

The composition of claim 4, wherein the vinegar has an acidity by volume in a range between three percent and about seven percent.

### Claim 6 (depends on 1)

The composition of claim 1, wherein the salt comprises sodium chloride.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the salt is powdered such that the powdered salt has a particle size in a range between −60 mesh and +325 mesh.

### Claim 8 (depends on 1)

The composition of claim 1, further comprising a colorant.

### Claim 9 (depends on 1)

The composition of claim 1, further comprising a wetting agent.

### Claim 10 (depends on 1)

The composition of claim 1, further comprising a thickener.

### Claim 11 (depends on 10)

The composition of claim 10, wherein the thickener is at least one of sugar and corn starch.

### Claim 12 (depends on 10)

The composition of claim 10, wherein the thickener is added to the composition in a concentration between about one-half tablespoon and one tablespoon per gallon of mild acid solution.