Directa Plus has filed a patent for a filter element for air conditioning units. The element includes a textile substrate with graphene nano-platelets dispersed in a binding agent, providing efficient filtration. The patent claims are not disclosed. GlobalData’s report on Directa Plus 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 Directa Plus, Water gas shift catalysts was a key innovation area identified from patents. Directa Plus's grant share as of January 2024 was 33%. Grant share is based on the ratio of number of grants to total number of patents.

Graphene-based filter element for air conditioning units

Source: United States Patent and Trademark Office (USPTO). Credit: Directa Plus PLC

A recently filed patent (Publication Number: US20240035690A1) describes a filter element for air conditioning units that incorporates graphene into a textile substrate, enhancing its performance. The graphene used in the filter element consists of nano-platelets with specific dimensions and is applied both on and inside the textile substrate. The amount of graphene present ranges from 2g to 20g per square meter of textile substrate, with variations in the application amount affecting the filter element's properties such as antibacterial and antiviral activities.

The method for manufacturing this innovative filter element involves impregnating a textile substrate in an aqueous bath containing graphene nano-platelets. The graphene used in the process has specific characteristics, including a carbon-oxygen ratio of =100:1. The resulting filter element exhibits enhanced antibacterial and antiviral activities, surpassing industry standards. The air conditioning unit incorporating this filter element offers improved filtration efficiency and air quality, with the graphene composition contributing to its performance. The patent highlights the potential for graphene-based filter elements to revolutionize air conditioning systems by providing superior protection against harmful particles and microorganisms, ultimately benefiting indoor air quality and human health.

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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