LVMH Moet Hennessy Louis Vuitton has filed a patent for a protective cap for eyeglass frame portions. The cap includes two elements that can be mounted to cover a hinge element and a surface area of the frame. The elements are made of different polymer materials with varying swelling properties, allowing them to separate when exposed to a rinsing fluid. The patent aims to protect surface treatments on eyeglass frames. GlobalData’s report on LVMH Moet Hennessy Louis Vuitton 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 LVMH Moet Hennessy Louis Vuitton, was a key innovation area identified from patents. LVMH Moet Hennessy Louis Vuitton's grant share as of September 2023 was 70%. Grant share is based on the ratio of number of grants to total number of patents.
Protective cap for eyeglass frame surface treatments
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A recently filed patent (Publication Number: US20230314834A1) describes a protective cap for surface treatments on eyeglass frame portions. The cap includes at least one temple and one hinge element fixed between the temple and the front of the frame. The cap is designed to protect the frame during surface treatments.
One of the key features of the protective cap is the use of two different polymer materials. The second polymer material, which constitutes at least the second coupling portion of the cap, has a swelling greater than 17%. In fact, the second swelling of the second polymer material is between 17% and 50%. This design ensures that the cap provides effective protection to the frame during surface treatments.
The patent also describes a method for the surface treatment of an eyeglass frame portion using the protective cap. The method involves arranging the frame portion with at least one temple and one hinge element, and then placing the protective cap on the frame. The cap consists of a first protection element and a second protection element, both made of different polymer materials with different swellings. The cap is mounted on the frame, with the first protection element covering the hinge element and the second protection element covering a surface zone adjacent to the hinge element.
The method further involves performing a first surface treatment on the frame portion, followed by rinsing the frame with a rinsing fluid. After rinsing, a second surface treatment is performed. During the rinsing process, the second polymer material of the second coupling portion of the cap expands due to absorption of the rinsing fluid. This expansion causes the second protection element to separate from the first protection element and the frame portion. Importantly, the second polymer material is insoluble in the rinsing fluid.
In some embodiments, the first and second protection elements are chemically coupled by a hydrolyzable covalent bond. This bond is hydrolyzed by the rinsing fluid, leading to the separation of the second protection element from the first protection element.
The rinsing process is carried out using a rinsing fluid at a temperature between 30°C and 70°C, or between 30°C and 50°C, depending on the embodiment.
Overall, this patent presents a protective cap and a method for surface treatment of eyeglass frame portions that ensure effective protection during the treatment process. The use of different polymer materials and the expansion of the second polymer material during rinsing contribute to the separation of the cap from the frame, allowing for easy removal after the treatment is complete.
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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.
