# US 10,368,691 B2 · Cooking vessel comprising an interior surface of partially coated stainless steel, and method of producing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,368,691 B2 - Document ID: US10368691B2 - Status: Granted - Kind: B2 - Application number: 15/513,705 - Filed: 2015-09-22 - Published: 2017-10-26 - Granted: 2019-08-06 - Earliest claimed: 2014-09-23 - Assignees: Seb S.A. - Applicants: Seb S.A. - Inventors: Simon Allemand - Web page: https://patentgrep.com/patent/US10368691B2 ## CPC - A47J 36/025: {Vessels with non-stick features, e.g. coatings} - A47J 45/061: {Saucepan, frying-pan handles (A47J45/07 takes precedence)} - B21D 51/22: pots, e.g. for cooking - B23P 15/00: Making specific metal objects by operations not covered by a single other subclass or a group in this subclass - B23P 2700/05: Cooking vessels - A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) ## Abstract A cooking vessel includes a vessel body having a partially coated, textured stainless steel inner surface having a plurality of ribs rising above recesses having bottoms covered with a non-stick coating. The ribs have uncoated tops and sides that are separate from the bottoms of the cavities. The sides connect the tops to the bottoms. The tops rise above the non-stick coating covering the bottoms. According to the invention, the non-stick coating rises over the sides from the bottoms towards the tops without exceeding the height of the tops, and the bottoms and the sides have a rough surface under the non-stick coating. Also included is a method for producing a cooking vessel. ## Claims ### Claim 1 A cooking vessel comprising a vessel body with a texturized interior surface made of partially coated stainless steel, the texturized interior surface having a plurality of ribs extending above bottom surfaces of valleys, the bottom surfaces being coated with a non-stick coating, the ribs having uncoated top surfaces and side surfaces distinct from the bottom surfaces of the valleys, the side surfaces of the ribs connecting the top surfaces of the ribs to the bottom surfaces of the valleys, said top surfaces of the ribs extending above the non-stick coating covering the bottom surfaces of the valleys, the bottom surfaces of the valleys and the side surfaces of the ribs having a roughened surface underneath the non-stick coating, to promote adhesion of the non-stick coating, wherein the side surfaces of the ribs are angled to form ramps connecting the top surfaces of the ribs to the bottom surfaces of the valleys, and in that the non-stick coating extends up the side surfaces of the ribs from the bottom surfaces of the valleys to the top surfaces of the ribs without exceeding a height of the top surfaces, wherein a thickness of the non-stick coating is greater on a lower portion of the side surfaces of the ribs than on an upper portion of the side surfaces of the ribs. ### Claim 2 (depends on 1) The cooking vessel as in claim 1, wherein a width of the top surfaces of the ribs is less than a distance between the top surfaces of two adjacent ribs. ### Claim 3 (depends on 1) The cooking vessel as in claim 1, wherein a width of the top surfaces of the ribs is less than a width of the bottom surfaces of the valleys between two adjacent ribs. ### Claim 4 (depends on 1) The cooking vessel as in claim 1, wherein the side surfaces of the ribs extend upwards from the bottom surfaces of the valleys at an angle less than 45°. ### Claim 5 (depends on 1) The cooking vessel as in claim 1, wherein the top surfaces of the ribs are flat. ### Claim 6 (depends on 1) The cooking vessel as in claim 1, wherein the ribs are of a trapezoidal configuration. ### Claim 7 (depends on 1) The cooking vessel as in claim 1, wherein a depth of cut defined between the top surfaces of the ribs and the bottom surfaces of the valleys is between 0.05 and 0.2 mm. ### Claim 8 (depends on 1) The cooking vessel as in claim 1, wherein the non-stick coating has an outer layer of PTFE. ### Claim 9 (depends on 1) The cooking vessel as in claim 1, wherein the non-stick coating has an outer ceramic sol-gel layer. ### Claim 10 (depends on 1) The cooking vessel as in claim 1, wherein the cooking vessel comprises at least one handle mounted to the vessel body. ### Claim 11 (depends on 1) The cooking vessel as in claim 1, wherein the ribs are interconnected so as to delimit distinct valleys. ### Claim 12 (depends on 1) The cooking vessel as in claim 1, wherein the side surfaces of the ribs extend upwards from the bottom surfaces of the valleys at an angle between 20° and 40°. ### Claim 13 (depends on 12) The cooking vessel as in claim 12, wherein a width of the top surfaces of the ribs is less than a distance between the top surfaces of two adjacent ribs. ### Claim 14 (depends on 12) The cooking vessel as in claim 12, wherein a width of the top surfaces of the ribs is less than a width of the bottom surfaces of the valleys between two adjacent ribs. ### Claim 15 (depends on 12) The cooking vessel as in claim 12, wherein the top surfaces of the ribs are flat. ### Claim 16 (depends on 12) The cooking vessel as in claim 12, wherein the ribs are of a trapezoidal configuration. ### Claim 17 (depends on 12) The cooking vessel as in claim 12, wherein a depth of cut defined between the top surfaces of the ribs and the bottom surfaces of the valleys is between 0.05 and 0.2 mm. ### Claim 18 (depends on 12) The cooking vessel as in claim 12, wherein the non-stick coating has an outer layer of PTFE. ### Claim 19 (depends on 12) The cooking vessel as in claim 12, wherein the non-stick coating has an outer ceramic sol-gel layer. ### Claim 20 (depends on 12) The cooking vessel as in claim 12, wherein the cooking vessel comprises at least one handle mounted to the vessel body. ### Claim 21 (depends on 12) The cooking vessel as in claim 12, wherein the ribs are interconnected so as to delimit distinct valleys.