# US 12,117,853 B2 · Cooking appliance with automatic timer and reminder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,117,853 B2 - Document ID: US12117853B2 - Status: Granted - Kind: B2 - Application number: 17/412,358 - Filed: 2021-08-26 - Published: 2023-03-02 - Granted: 2024-10-15 - Earliest claimed: 2021-08-26 - Assignees: Haier US Appliance Solutions, Inc. - Applicants: Haier US Appliance Solutions, Inc. - Inventors: Megan Etgen; Matthew R. Hunter - Web page: https://patentgrep.com/patent/US12117853B2 ## CPC - G05D 23/1917: {using digital means} - F24C 3/128: {in baking ovens} - F24C 7/085: {on baking ovens} - F24C 7/086: {touch control} - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION ## Abstract A method of operating a cooking appliance includes receiving an input from a user interface of the cooking appliance. The input includes a set temperature. In response to the received input, a heating element of the cooking appliance is activated. The method also includes detecting an opening and a closing of a door of the cooking appliance. The method further includes automatically initiating a timer when the closing of the door is detected. ## Claims ### Claim 1 A method of operating a cooking appliance, the method comprising: receiving an input, the input comprising a set temperature; activating a heating element of the cooking appliance in response to the received input; detecting a first opening and a first closing of a door of the cooking appliance; automatically initiating a timer when the first closing of the door is detected; determining, when the automatically initiated timer reaches a first predetermined time limit, whether a manual timer has been initiated; sending a first user notification when the manual timer has not been initiated at the first predetermined time limit; continuing to run the automatically initiated timer after the first predetermined time limit; detecting a second opening and a second closing of the door; recording a time of the second closing of the door; determining, when the automatically initiated timer reaches a second predetermined time limit, whether the heating element is still activated; and sending a second user notification when the heating element is still activated at the end of the second predetermined time limit, the second user notification comprising a prompt to turn the cooking appliance off. ### Claim 2 (depends on 1) The method of claim 1, wherein determining whether the manual timer has been initiated comprises determining, by a controller of the cooking appliance, whether the manual timer has been initiated from a user interface of the cooking appliance. ### Claim 3 (depends on 1) The method of claim 1, wherein determining whether the manual timer has been initiated comprises determining, by a controller of the cooking appliance, whether the manual timer has been initiated from a remote user interface device. ### Claim 4 (depends on 1) The method of claim 1, wherein at least one of the first predetermined time limit and the second predetermined time limit is based on the set temperature. ### Claim 5 (depends on 1) The method of claim 1, further comprising receiving a food type input, wherein at least one of the first predetermined time limit and the second predetermined time limit is based on the food type input. ### Claim 6 (depends on 1) The method of claim 1, wherein the first predetermined time limit is between about one minute and about thirty minutes. ### Claim 7 (depends on 1) The method of claim 1, further comprising, receiving a confirmation in response to the second user notification, and deactivating the heating element in response to the confirmation. ### Claim 8 (depends on 7) The method of claim 7, wherein the second predetermined time limit is between about forty-five minutes and about three hours. ### Claim 9 (depends on 1) The method of claim 1, wherein the set temperature is a preheat temperature. ### Claim 10 A cooking appliance comprising: a cabinet; a user interface comprising an input selector on the cabinet; a cooking chamber defined in the cabinet, the cooking chamber configured for receipt of food items for cooking; a door pivotally mounted to the cabinet at a front portion of the cooking chamber, whereby the door is rotatable between a closed positioned where the cooking chamber is sealingly enclosed and an open position which permits access to the cooking chamber; a heating element disposed within the cabinet and in thermal communication with the cooking chamber for cooking the food items received in the cooking chamber; and a controller, the controller configured for: receiving an input, the input comprising a set temperature; activating the heating element of the cooking appliance in response to the received input; detecting first opening and a first closing of the door of the cooking appliance; automatically initiating a timer when the first closing of the door is detected; determining, when the automatically initiated timer reaches a first predetermined time limit, whether a manual timer has been initiated; sending a first user notification when the manual timer has not been initiated at the first predetermined time limit; continuing to run the automatically initiated timer after the first predetermined time limit; detecting a second opening and a second closing of the door; recording a time of the second closing of the door; determining, when the automatically initiated timer reaches a second predetermined time limit, whether the heating element is still activated; and sending a second user notification when the heating element is still activated at the end of the second predetermined time limit, the second user notification comprising a prompt to turn the cooking appliance off. ### Claim 11 (depends on 10) The cooking appliance of claim 10, wherein the controller is configured for determining whether the manual timer has been initiated by determining whether the manual timer has been initiated from the user interface. ### Claim 12 (depends on 10) The cooking appliance of claim 10, wherein the controller is configured for determining whether the manual timer has been initiated by determining whether the manual timer has been initiated from a remote user interface device. ### Claim 13 (depends on 10) The cooking appliance of claim 10, wherein at least one of the first predetermined time limit and the second predetermined time limit is based on the set temperature. ### Claim 14 (depends on 10) The cooking appliance of claim 10, wherein the controller is further configured for receiving a food type input, and wherein at least one of the first predetermined time limit and the second predetermined time limit is based on the food type input. ### Claim 15 (depends on 10) The cooking appliance of claim 10, wherein the first predetermined time limit is between about one minute and about thirty minutes. ### Claim 16 (depends on 10) The cooking appliance of claim 10, wherein the controller is further configured for receiving a confirmation in response to the second user notification, and deactivating the heating element in response to the confirmation. ### Claim 17 (depends on 16) The cooking appliance of claim 16, wherein the second predetermined time limit is between about forty-five minutes and about three hours. ### Claim 18 (depends on 10) The cooking appliance of claim 10, wherein the set temperature is a preheat temperature.