In this corpus, the claims typically describe an abrasive particle or grain with a precisely controlled geometry — a defined pyramid structure, a specific grain aspect ratio, or a tapered protrusion shape — rather than the irregular, randomly fractured grain used in conventional abrasives. The functional payoff claimed is usually consistent scratch depth, predictable wear, or a self-sharpening edge as the particle wears down. Because the shape is engineered rather than incidental, these claims often sit alongside a manufacturing-process claim describing how the shape is produced, such as microreplication.

One assignee holds a clear majority of the 70 records in this dataset's ranked assignee list of 16 companies, with 62 records against a fifth-place count of only 3. That concentration means most of the core shaped-particle geometry claims already sit with a single filer, and any competitive analysis should start by reading that filer's claim scope closely before assuming open ground. The rest of the ranking is a thin tail of low-volume filers and named individual inventors.

Filing activity peaked in 2020 at 10 records and has not returned to that level since, based on the years tracked in this dataset. A meaningful growth rate is not computable here because fewer than four complete years remain once the roughly 18-month publication lag is accounted for, so recent-year counts should be read as a floor rather than a true current rate. The honest read is that the field looks flat-to-declining on the visible data, with the caveat that the last one to two years are still filling in.

B24D (grinding tools & abrasives) is the anchor class, appearing in 72.9% of the 70 records in scope, but a meaningful share also carry C09K (misc. materials, 45.7%), B24B (grinding & polishing, 37.1%) and C09C (inorganic pigment treatment, 32.9%). Smaller but non-trivial shares appear in B29C (plastics shaping), C08F and C08G (polymer classes) and H01L (semiconductor devices), the last of which suggests some structured-abrasive claims target semiconductor-substrate finishing specifically. A full prior-art search on this topic should not stop at B24D alone.

WO2026120450A1, filed by 3M Innovative Properties Company, claims an abrasive rotary tool with a conformable abrasive film wrapped around the edge of a cylindrical tool body, where the film carries tapered protrusions narrowing from base to tip and a structured abrasive layer on top of that geometry. That specific combination — the wraparound edge placement plus the tapered-protrusion base film — is what's claimed, not shaped abrasive particles generally. A design that uses a different mounting geometry or a non-tapered protrusion profile would sit outside this particular claim, though it should still be checked against the filer's broader family.