Vitro has filed a patent for an article coated with a multi-layer coating stack. The coating stack includes a first layer of metal oxide or metal nitride, a functional layer of indium doped tin oxide, and a second layer of silicon oxide. The purpose and potential applications of this coating are not mentioned in the abstract or claim. GlobalData’s report on Vitro 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 Vitro, photovoltaic drones was a key innovation area identified from patents. Vitro's grant share as of September 2023 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Coating stack for an article with metal oxide layers
A recently filed patent (Publication Number: US20230312407A1) describes an article coated with a multi-layer coating stack. The coated article includes a first layer made of a metal oxide or a metal nitride, arranged over the article. A functional layer comprising indium doped tin oxide is then arranged over the first layer. Finally, a second layer made of silicon oxide is arranged over the functional layer.
In some embodiments, the second layer may comprise a silicon aluminum oxide. The first layer may consist of an underlayer arranged over the article, which can be made of materials such as zinc oxide, tin oxide, zinc-tin oxide, zinc stannate, silicon nitride, or silicon aluminum nitride. An overlayer made of silicon oxide is then arranged over the underlayer.
The coated article may also include a protective layer arranged over the second layer. This protective layer can consist of a metal oxynitride layer arranged over the second layer, and a metal oxide layer arranged over the metal oxynitride layer. The metal oxide layer may be made of materials such as titanium oxide, zinc oxide, zirconium oxide, titanium aluminum oxide, or silicon aluminum oxide.
The article coated with the multi-layer coating stack can be made of glass or plastic. The functional layer has a thickness of less than 160 nm, while the second layer and/or the protective layer may have a thickness of less than 70 nm. In some embodiments, the second layer is the outermost layer, while in others, the protective layer is the outermost layer.
The coated article described in the patent can be used in various applications, including being mounted in a vehicle or an insulating glass unit. Additionally, the patent also mentions a transparency comprising the coated article, where the multi-layer coating stack is arranged on a surface of the transparency. Examples of such transparencies include vehicle windows or insulating glass units for architectural structures.
Overall, this patent describes a specific multi-layer coating stack for articles, such as glass or plastic, which provides various functional and protective properties. The coating stack includes layers made of metal oxides, metal nitrides, and silicon oxide, with the option of adding a protective layer for enhanced performance. The patent highlights potential applications in the automotive and architectural industries.
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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.
