SGD has been granted a patent for a process that marks the surface of refractory ceramic parts, primarily composed of over 50% ZrO2 and featuring low porosity. The method utilizes a laser beam, with specific parameters defined by a mathematical relationship to achieve effective marking. GlobalData’s report on SGD 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 SGD, was a key innovation area identified from patents. SGD's grant share as of June 2024 was 76%. Grant share is based on the ratio of number of grants to total number of patents.

Laser marking process for refractory ceramic parts

Source: United States Patent and Trademark Office (USPTO). Credit: SGD SA

The granted patent US12043582B2 outlines a novel process for marking the surface of refractory ceramic parts, specifically those with a microstructure that includes over 50% by mass of zirconium dioxide (ZrO2) and a silicate binder phase, while maintaining a total porosity of less than 5% by volume. The claims detail specific parameters for the marking process, including frequency and speed limitations, with frequencies below 300 kHz and speeds under 5000 mm/sec being preferred. The process also allows for the creation of erasable marks and specifies exposure energy levels that can effectively remove the binder phase to a controlled depth. Additional claims emphasize the importance of surface roughness and moisture content prior to marking, as well as the composition of the ceramic material, which may consist of various oxides.

Furthermore, the patent describes a method for manufacturing furnaces, such as glass or metallurgical furnaces, which involves marking each refractory ceramic part according to its intended position within the assembly. The marks can take various forms, including alphanumeric characters, line patterns, or graphic representations, and may consist of a series of dots with a specified density. The claims also highlight the potential for the marked parts to have a specific cross-sectional beam diameter during the marking process, ensuring precision in the application. Overall, the patent presents a comprehensive approach to both the marking and manufacturing of refractory ceramic components, enhancing their functionality and integration in industrial applications.

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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.