# US 10,244,882 B2 · Cooking vessel and method for manufacturing the same

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- Number: US 10,244,882 B2
- Document ID: US10244882B2
- Status: Granted
- Kind: B2
- Application number: 14/284,830
- Filed: 2014-05-22
- Published: 2015-06-11
- Granted: 2019-04-02
- Earliest claimed: 2013-12-06
- Assignees: Kims Holding Co., Ltd.
- Applicants: Kims Holdings Co., Ltd.; Heonho Lee
- Inventors: Heonho Lee; Jongmoon Kim
- Web page: https://patentgrep.com/patent/US10244882B2

## CPC

- A47J 27/002: {Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels}
- A47J 36/025: {Vessels with non-stick features, e.g. coatings}
- B05D 3/067: {Curing or cross-linking the coating}
- B05D 5/08: to obtain an anti-friction or anti-adhesive surface (rendering particulate materials free-flowing in general, e.g. making them hydrophobic B01J2/30)
- A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)

## Abstract

The present invention relates to a cooking vessel and a method for manufacturing the same wherein a plurality of concave and convex portions is protrudingly formed to a shape of a dotted line, not to a shape of a solid line, on the bottom surface of the cooking vessel, thus maximizing a non-stick effect to prevent food from sticking to the bottom surface of the cooking vessel.

## Claims

### Claim 1

A method for manufacturing a non-stick cooking vessel, the method comprising the steps of: applying a photosensitive paint to a surface of a stainless steel plate to form a photosensitive paint layer; applying a film to a surface of the photosensitive paint layer, the film composed of black portions and transparent portions interspersed to create dotted patterns of the transparent portions surrounded by the black portions; irradiating the film with ultraviolet rays to only cure the photosensitive paint disposed underneath the dotted patterns of the transparent portions; removing the film, uncured portions of the photosensitive paint layer disposed underneath the black portions of the film, and a portion of the stainless steel plate disposed underneath the uncured portions of the photosensitive paint layer; followed by removing any remaining cured photosensitive paint layer to form a plurality of recessed portions in the stainless steel plate at locations underneath where the black portions of the film were prior to being removed, and to form raised portions in the dotted patterns in the stainless steel plate at locations underneath where the dotted patterns of the transparent portions of the film were prior to being removed, and thus forming a plurality of hexagonal structures on the stainless steel plate defined by a plurality of lines of dots, the dots having a diameter of 0.5 mm and comprising the raised portions; and forming a coating layer having a non-stick function only on the recessed portions of the stainless steel plate, thereby providing the non-stick cooking vessel, wherein the recessed portions have a depth of from 0.06-0.08 mm.

### Claim 2 (depends on 1)

The method according to claim 1, wherein said forming the coating layer is performed by applying an initial coating layer on both the recessed portions and the raised portions of the stainless steel plate, and then removing the initial coating layer from the raised portions of the stainless steel plate.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the coating layer is polytetrafluoroethylene or a ceramic coating layer.