Screen has been granted a patent for a culture vessel designed to hold biological samples. The vessel features recesses with flat bottoms and rough side surfaces that minimize meniscus formation and light reduction, enhancing visibility and reducing image distortion during observation under epi-illumination. GlobalData’s report on Screen gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Screen, Semiconductor fabrication robots was a key innovation area identified from patents. Screen's grant share as of July 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.

Culture vessel with rough, water-repellent surfaces for observation

Source: United States Patent and Trademark Office (USPTO). Credit: Screen Holdings Co Ltd

The granted patent US12071604B2 introduces a specialized culture vessel designed for holding biological samples alongside a culture solution, facilitating observation under epi-illumination. The vessel features one or more recesses, each characterized by a flat bottom surface and an upward-extending side surface. Notably, the side surface is equipped with a rough texture, defined by an arithmetic mean roughness ranging from 0.18 µm to 5.0 µm. This rough surface is integral to the vessel's functionality, as it enhances the interaction between the biological sample and the culture solution.

Further specifications detail the rough surface's characteristics, including the presence of flaws with widths between 25 µm and 10 µm, and a flaw spacing of 30 µm to 60 µm. The roughness is consistently distributed along the side surface, extending from the upper to the lower ends. The patent also outlines various methods for creating this rough surface, such as sandblasting, grinding, and chemical etching. Additionally, the culture vessel may be configured as a well plate containing multiple recesses, thereby increasing its utility in biological research and experimentation.

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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.