Marubeni has been granted a patent for a method to produce copper-selenide nanoparticles. The process involves forming flowable precursors, combining them in a lower-polarity solvent, and isolating the nanoparticles in an oxygen-depleted environment using a higher-polarity solvent. The method utilizes a segmented flow process for efficient production. GlobalData’s report on Marubeni 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 Marubeni, Fuel cell powered drones was a key innovation area identified from patents. Marubeni's grant share as of March 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.
Method for producing copper-selenide nanoparticles using flow process
A recently granted patent (Publication Number: US11897766B2) discloses a method for producing copper-selenide nanoparticles through a flow process. The method involves combining a copper starting material and a ligand to form a flowable copper precursor, suspending a selenium starting material in a liquid to form a flowable selenium precursor, and then combining these to create a flowable copper-selenium mixture in a lower-polarity solvent. By conducting a segmented flow of this mixture through heating units and isolating the nanoparticles in an oxygen-depleted environment using a deoxygenated, higher-polarity solvent, the process results in the production of copper-selenide nanoparticles.
Furthermore, the patent details various aspects of the method, including the use of a lower-polarity solvent in combining the copper starting material and ligand, the inclusion of an amine ligand in the flowable copper-selenium mixture, and the specific conditions for isolating the nanoparticles in an oxygen-depleted environment. The method also involves sparging both the copper and selenium precursors with a non-reacting gas to remove dissolved oxygen, along with sparging the deoxygenated higher-polarity solvent to ensure the removal of oxygen. Overall, the patented method offers a detailed and systematic approach to producing copper-selenide nanoparticles through a flow process, highlighting the importance of specific solvents, ligands, and environmental conditions in achieving successful nanoparticle synthesis.
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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.
