The dataset used for this landscape contains 1,635 published records filed between 2015 and mid-2026, matched against terms covering sunscreen formulation, emulsion and texture combined with film uniformity, water resistance, sensory feel, emulsifier selection, application amount and rub off. This counts published records rather than granted patents, and because publication lags filing by roughly 18 months, the most recent one or two years understate the true filing volume. Treat the figure as the scope of this specific search, not the entire universe of sunscreen patents.

The ranking behind this landscape covers 100 companies, with the single leading assignee holding 107 records. That leader sits well ahead of fifth place at 54 and tenth at 33, yet the top 5 combined still account for only 24.6% of all 1,635 records in scope. In practice this means a large share of activity comes from assignees outside the ranked leaders altogether, so a freedom-to-operate check should not stop at the largest names.

Filing activity rose from 63 records in 2017 to a peak of 88 in 2021, then declined 50% to 44 by 2024 — that decline is the most recent period that can be treated as reliably complete. Figures for 2025 and 2026 are still filling in under normal publication lag, so it would be premature to call the field currently shrinking; it is more accurate to say the field's most active filing window has already passed. Anyone benchmarking activity should compare against the 2021 peak rather than the most recent partial year.

The IPC composition shows medicinal-preparation and cosmetics-use classes (A61K and A61Q) covering the large majority of the 1,635 records, at 87.6% and 76.1% respectively, while polymer and materials classes like C08L, C08G, C07C, C09K and C08F each sit under 8%. That gap points to comparatively thin claim density around specific vehicle chemistry — film formers, emulsifier systems tuned for sensory feel, and dosing or transfer-rate mechanisms — relative to the broad cosmetics-use core. These are reasonable places to look for open claim space rather than crowded prior art.

US20040228811A1, filed by Kimberly-Clark Worldwide and published in 2004, claims sunscreen wipes built around a thixotropic, quick-breaking formulation using Pemulen TR-2 with a stabilizing emulsifier and neutralizing agent, tuned to specific high- and low-shear viscosities at a pH range of about 5 to 6 to raise the transfer rate to skin. It matters as a representative example of how viscosity and pH control at the point of application — not the UV filter itself — became the claimed invention, a pattern that recurs across the vehicle and sensory-design corner of this landscape.