One assignee holds 178 of the 353 records in scope, which is by far the largest single share in this field. The gap to the rest of the ranked leaders is steep: fifth place holds 19 records and tenth place holds just 3. Combined, the top five assignees account for 93.8% of all 353 records, so this is a field defined by a small number of incumbents rather than a broad base of independent filers.

Filings peaked at 30 in 2018 and had fallen to 8 by 2024, a 50% decline from the 16 filings recorded in 2021. That said, patent publication typically lags filing by around 18 months, so the 2025 and 2026 figures in any dataset are still incomplete and should not be read as confirming the decline continues. The safest read is that the tracked, complete-year trend through 2024 shows a real cooling from the 2018 peak.

In this dataset, 47.0% of the 353 records carry detergent-related classification (C11D) and 54.1% carry animal feed classification (A23K), and a substantial share of records carry both. The underlying granulation techniques — coating layers, fluid bed processing, mechanical strength and dust reduction — are largely shared across the two applications, with the main differences appearing in formulation additives and regulatory-driven performance claims specific to each end use rather than in the core granulation process itself.

CA2254985C, assigned to Genencor International, claims a method for producing an activity-stable, low-dust enzyme granulate using specially selected flours as auxiliary vehicles or fillers, aimed at washing and cleaning applications. Its scope is tied to that filler selection and the resulting activity-and-dust performance combination, rather than to coating chemistry generally. A new formulation using a different filler class or a coating-based rather than filler-based approach to dust control would sit outside its core claims, though a freedom-to-operate review against the full family is still advisable given how foundational this filing is to the field.

The IPC composition shows heavy density in animal feed (54.1% of 353 records) and detergents (47.0%), with much thinner coverage in catalysis-linked processes (B01J, 1.4%), food-shaping formats (A23P, 2.3%) and baking-dough carriers (A21D, 4.2%). These smaller categories are not necessarily technically harder; they are simply less claimed, which makes them worth a closer novelty search before assuming the space is occupied. Aerosol-reduction measurement methods specifically also appear thinly represented relative to the volume of dust-control claims overall.