Lexmark International has patented a method for making a heater using an aluminum nitride base with minimal impurities. The process involves firing the base, layering conductor and resistive layers, and adding multiple glass layers. This innovative method ensures high-quality heaters with environmentally friendly materials. GlobalData’s report on Lexmark International gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Lexmark International, Automated personalized lookbooks was a key innovation area identified from patents. Lexmark International's grant share as of January 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.

Method of making a heater with specific materials and layers

Source: United States Patent and Trademark Office (USPTO). Credit: Lexmark International Inc

A recently granted patent (Publication Number: US11862366B2) discloses a method for making a heater using an aluminum nitride base with minimal impurities. The process involves firing the base before layering any materials, applying conductor layers on both sides of the base, adding a resistive layer that connects to the conductor layer, and then layering at least four glass layers over the resistive layer. The firing process includes specific temperature requirements and durations to ensure proper bonding of the materials.

Additionally, the method includes specific steps such as settling the pastes before drying, using a mesh stencil for layering, and oxidizing or plasma treating the base surface before firing. The glass layers used in the process have specific viscosity and solid content requirements to achieve the desired results. Overall, the method outlined in the patent aims to create a heater with efficient heating capabilities by carefully layering and firing the materials in a controlled manner, ensuring proper adhesion and functionality of the components.

To know more about GlobalData’s detailed insights on Lexmark International, buy the report here.

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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.