Entegris had seven patents in 3D printing during Q4 2023. Entegris Inc filed a patent for a method and system for producing articles using a green part that is cooled to form a hardened mass with loosely-attached powder particles, which are then removed. The method allows for recycling and reusing of the removed powder particles. GlobalData’s report on Entegris gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

Entegris grant share with 3D printing as a theme is 42% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: De-powdering of green samples using freezing method for additive manufacturing (Patent ID: US20230416154A1)

The patent filed by Entegris Inc. describes a method for producing articles using a green part that includes powder particles, ink, and optionally a binder. The method involves cooling the green part to below the freezing point of the ink to form a hardened mass and loosely-attached powder particles, which are then removed. The removed powder particles can be recycled and reused. The powder particles used can be temperature-sensitive materials such as zeolite, metal-organic frameworks (MOFs), metals, ceramics, pharmaceutical drug materials, or composites of zeolite and MOFs.

The method also includes sintering the hardened mass after removing the loosely-attached powder particles. The ink used can be deionized water, alcohol, or a combination thereof, while the binder can be bentonite clay, kaolin, silica, or a combination. The size of the powder particles ranges from 2 µm to 100 µm, and the cooling temperature should be below the freezing point of the ink. The system associated with the method includes components for producing the green part, cooling it, and removing the loosely-attached powder particles, with an optional component for sintering the hardened mass. The removal of powder particles can be done using tools like a brushing tool, compressed air, or a vacuuming tool.

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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.