# US 8,540,107 B2 · Cooking vessel with nonstick coating

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- Number: US 8,540,107 B2
- Document ID: US8540107B2
- Status: Granted
- Kind: B2
- Application number: 13/509,905
- Filed: 2011-10-07
- Published: 2012-12-06
- Granted: 2013-09-24
- Earliest claimed: 2010-10-07
- Applicants: ChangHo Lee; SuChin Park
- Inventors: ChangHo Lee; SuChin Park
- Web page: https://patentgrep.com/patent/US8540107B2

## CPC

- A47J 37/10: Frying pans, e.g. frying pans with integrated lids or basting devices
- A47J 36/025: {Vessels with non-stick features, e.g. coatings}
- A47J 36/04: the materials being non-metallic
- A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES

## Abstract

The invention relates to a cooking vessel having a non-stick coating, a handle and a vessel body. According to the invention, the inner surface of the vessel body is provided with a multiplicity of oil wells, the inner side of which wells is provided with studs of which the height is less than the depth of the oil wells, wherein the upper surface of the oil wells is provided with a non-stick coating, and the thickness of the non-stick coating is greater than the height of the studs and at the same time less than the depth of the oil wells.

## Claims

### Claim 1

A cooking vessel comprising:
an upwardly concave body having a floor with an upwardly directed substantially planar face formed with an array of upwardly open cavities each having a base surface and each of a predetermined depth;
a handle projecting laterally from the body;
respective arrays of horizontally spaced studs formed on and projecting upward from the base surfaces of the cavities, each stud being of a predetermined height that is less than the predetermined depth; and
respective layers of a nonstick coating on the base surfaces of the cavities and each of a thickness greater than the height of the studs and less than the depth of the cavities such that the studs are wholly imbedded in the respective nonstick layer and an upper surface of each of the layers is recessed below a plane of the floor between the cavities.

### Claim 2 (depends on 1)

The cooking vessel defined in claim 1, wherein the depth is at least 0.1 mm and upper surfaces of the layers are at least 0.05 mm below the plane of the floor between the cavities.

### Claim 3 (depends on 2)

The cooking vessel defined in claim 2, wherein a spacing between the cavities is less than 1 mm.

### Claim 4 (depends on 1)

The cooking vessel as claimed in claim 1, wherein the cavities are of hexagonal, round, square or polygonal shape.

### Claim 5 (depends on 1)

The cooking vessel as claimed in claim 1, wherein the studs are cylindrical or of rectangular section.

### Claim 6 (depends on 1)

The cooking vessel as claimed in claim 1, wherein the cavities cover more than 70% of the upwardly directed inner planar face of the body.

### Claim 7 (depends on 1)

The cooking vessel as claimed in claim 1, wherein the depth of the cavities is between 0.1 mm and 0.3 mm.

### Claim 8 (depends on 1)

The cooking vessel as claimed in claim 1, wherein the thickness of the nonstick coating is up to 0.1 mm.

### Claim 9 (depends on 1)

The cooking vessel as claimed in claim 1, wherein the thickness of the nonstick coating is at least 0.05 mm less than the depth of the cavities.