Reckitt Benckiser Group has been granted a patent for a method of automatic dishwashing. The method involves delivering a first cleaning composition as a mist and a second cleaning composition as a jet, both at a temperature below 100°C. The dishwasher is configured to carry out the method, which includes delivering rinsing compositions and optionally draining them from the cleaning volume. The first cleaning composition contains bleach, while the second composition is bleach-free and contains enzymes. The patent also covers a dishwasher and a kit for implementing the method. GlobalData’s report on Reckitt Benckiser Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Reckitt Benckiser Group, water-soluble detergent packaging was a key innovation area identified from patents. Reckitt Benckiser Group's grant share as of September 2023 was 51%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for a method of automatic dishwashing

Source: United States Patent and Trademark Office (USPTO). Credit: Reckitt Benckiser Group Plc

A recently granted patent (Publication Number: US11751746B2) describes an automatic dishwasher with unique cleaning capabilities. The dishwasher includes a cleaning volume for receiving soiled wares and two separate delivery apparatuses for different cleaning compositions.

The first delivery apparatus is designed to connect to a source of a bleach-based cleaning composition and deliver it to the cleaning volume as a mist at a temperature below 100°C. The second delivery apparatus, on the other hand, connects to a source of a bleach-free cleaning composition containing enzymes such as amylase, protease, cellulose, and lipase. This second composition is delivered to the cleaning volume as a jet at a temperature below 100°C.

The dishwasher follows a specific method of dishwashing, which includes delivering the first cleaning composition to the cleaning volume to contact the soiled wares, followed by a first rinsing composition delivered as a mist or a jet. Then, the second cleaning composition is separately delivered to the cleaning volume, followed by a second rinsing composition. Optionally, a third rinsing composition can also be delivered.

Several key features differentiate the delivery of the two cleaning compositions. The first cleaning composition is delivered at a lower momentum and mass flow rate compared to the second cleaning composition. The ratio of momentum and mass flow rate between the two compositions is at least 1:3. The first cleaning composition has a mean particle size of 5 to 500 microns and/or a DV(10) of 35 microns. Additionally, one or both of the rinsing compositions may contain a non-ionic surfactant.

The patent also mentions additional components of the dishwasher, such as receptacles for the cleaning and rinsing compositions, with a separate receptacle for the first and second cleaning compositions. The third receptacle can be connected to the first delivery apparatus.

Overall, this patented automatic dishwasher offers a unique combination of cleaning compositions and delivery methods, providing efficient and effective dishwashing capabilities.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.