Societe BIC has patented a method for reusing notebooks using a thermochromic ink pen and a moisture carrier to erase markings. The innovative system allows for sustainable note-taking by easily removing ink from synthetic-paper pages. GlobalData’s report on Societe BIC 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 Societe BIC, Fuel cell powered drones was a key innovation area identified from patents. Societe BIC's grant share as of January 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.

Reusable notebook with thermochromic ink and moisture-erasable system

Source: United States Patent and Trademark Office (USPTO). Credit: Societe BIC

A recently granted patent (Publication Number: US11884094B2) outlines a method and system for reusing a moisture-erasable note-taking system. The method involves providing a writing surface, a pen with microencapsulated ink, and a moisture carrier containing liquid diffused within it. Users can write on the surface with the pen, erase the markings using the liquid-diffused moisture carrier, and reuse the surface without damaging it. The pen's ink can be thermochromic, and the writing surface can be a synthetic page, with water commonly used as the erasing liquid.

The patent also describes systems with writing surfaces designed to retain thermochromic ink markings that can be easily erased when wiped with a damp moisture carrier. The writing instrument used in these systems has ink particles larger than the pores of the surface, ensuring the markings adhere without being absorbed. The moisture carrier contains liquid, often water, diffused within it to facilitate the erasing process. Additionally, another system detailed in the patent involves a moisture carrier dampened with a solvent to erase ink markings that bond to the writing surface, with the bond being broken in the presence of the solvent. These systems are particularly useful for synthetic pages and utilize microencapsulated ink for efficient reuse.

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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.