# US 2014/0193549 A1 · Food Holding Device, Method of Making, and Method of Storing Cooked Food > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193549 A1 - Document ID: US20140193549A1 - Status: Published application - Kind: A1 - Application number: 14/148,087 - Filed: 2014-01-06 - Published: 2014-07-10 - Earliest claimed: 2010-03-10 - Assignees: Restaurant Technology, Inc. - Applicants: Restaurant Technology, Inc. - Inventors: James C. Purgatorio - Web page: https://patentgrep.com/patent/US20140193549A1 ## CPC - B21D 31/06: Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming (forging hammers B21J7/00) - A23L 5/15: {using wave energy, irradiation, electrical means or magnetic fields, e.g. oven cooking or roasting using radiant dry heat} - A47J 39/006: {for either storing and preparing or for preparing food on serving trays, e.g. heating, thawing, preserving} - B24C 1/10: for compacting surfaces, e.g. shot-peening (for deforming sheet metal, tubes or profiles B21D31/06; as a metallurgical treatment C21D7/00, C22F1/00) - B65D 81/34: for packaging foodstuffs {or other articles} intended to be cooked or heated within the package - C21D 7/06: by shot-peening or the like - Y10T 428/13: Hollow or container type article [e.g., tube, vase, etc.] - 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) - A23L: FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF (preservation thereof A23B) - A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES - B24C: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A food holding device includes a holding bin and an optional heating component. The holding bin has a specified average surface roughness Ra on at least a portion of the surface intended to be contacted with food during storage of the food. ## Claims ### Claim 1 A method of storing cooked food in a food holding bin, comprising: placing cooked food in a food holding bin having a food-contacting surface, at least a portion of the food-contacting surface having an average surface roughness Ra in the range of from about 0.5 μm to about 3 μm; directing radiant energy onto the food while in the holding bin and onto at least a portion of the surface of the food holding bin having the average surface roughness Ra. ### Claim 2 (depends on 1) The method of storing cooked food of claim 1, wherein the average surface roughness Ra is in the range of from about 0.75 μm to about 2 μm. ### Claim 3 (depends on 2) The method of storing cooked food of claim 2, wherein the average surface roughness Ra is in the range of from about 0.75 μm to about 1.75 μm. ### Claim 4 A method of making a food holding device comprising: providing a sheet of material suitable for a holding bin, at least a portion of the sheet of material having an average surface roughness Ra in the range of from about 0.5 μm to about 3 μm; forming at least a portion of a food holding bin from the sheet of material having a food-contacting surface wherein at least a portion of the food-contacting surface has the average surface roughness Ra. ### Claim 5 (depends on 4) The method of claim 4 further comprising bead blasting the sheet of material to provide the average surface roughness Ra. ### Claim 6 (depends on 4) The method of claim 4, wherein the average surface roughness Ra is in the range of from about 0.75 μm to about 2 μm. ### Claim 7 (depends on 5) The method of claim 5, wherein the bead blasting comprises bead blasting with glass beads. ### Claim 8 (depends on 6) The method of claim 6, wherein the average surface roughness Ra is up to a maximum of about 1.2 μm. ### Claim 9 (depends on 1) The method of claim 1 wherein at least a portion of the food-contacting surface comprises a bottom surface of the food holding bin. ### Claim 10 (depends on 9) The method of claim 9, wherein the bottom surface comprises a plurality of openings, the method further comprising separating the placed food from oil by allowing the oil to drip through the openings. ### Claim 11 (depends on 9) The method of claim 9 wherein the bottom surface has an average surface roughness Ra between the perforations of between approximately 0.75 μm and approximately 2 μm. ### Claim 12 (depends on 9) The method of claim 9 further comprising heating the bottom surface to an average temperature in the range of from about 165° F. to about 175° F. by the radiant energy. ### Claim 13 (depends on 1) The method of claim 1 further comprising forming a thin film of cooking oil on the surface having the roughness. ### Claim 14 (depends on 1) The method of claim 1 wherein placing cooked food in the food holding bin comprises placing French fries or chicken nuggets in the food holding bin. ### Claim 15 (depends on 4) The method of claim 4 wherein the material of the food holding bin is stainless steel. ### Claim 16 (depends on 5) The method of claim 5 wherein the bead blasting comprises bead blasting with glass beads having an average grit size of 6 to 80. ### Claim 17 (depends on 4) The method of claim 4, wherein all of the food-contacting surface of the holding bin has an average surface roughness Ra in the range of from about 0.5 μm to about 3 μm. ### Claim 18 (depends on 4) The method of claim 4, wherein at least substantially all of the food-contacting surface of the holding bin has an average surface roughness Ra in the range of from about 0.5 μm to about 3 μm. ### Claim 19 (depends on 1) The method of claim 1 wherein the food is selected from the group consisting of French fries, chicken nuggets, hash browns, onion rings, fried mushrooms, hamburgers, chicken and mixtures thereof. ### Claim 20 A method of storing cooked French fries comprising: placing cooked French fries in a food holding bin having a food-contacting surface, at least a portion of the food-contacting surface having an average surface roughness Ra in the range of from about 0.5 μm to about 3 μm; directing radiant energy onto the cooked French fries while in the holding bin and onto at least a portion of the surface of the food holding bin having the average surface roughness Ra.