Grooved decorative article
US-2026009231-A1 · Jan 8, 2026 · US
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Surfaces {(guard covers of stairs E04G21/30)}
Surfaces {(guard covers of stairs E04G21/30)} · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E04F11/17 |
| Official title | Surfaces {(guard covers of stairs E04G21/30)} |
| Display label | Surfaces {(guard covers of stairs E04G21/30)} |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2018 | 4 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Energy-efficient assistive stairs
US-11608641-B2 · Mar 21, 2023 · US
Stair tread cover
US-11486156-B2 · Nov 1, 2022 · US
Stair tread cover
US-11293193-B2 · Apr 5, 2022 · US
Energy-efficient assistive stairs
US-2021277661-A1 · Sep 9, 2021 · US
Stair tread cover
US-11002028-B2 · May 11, 2021 · US
Energy-efficient assistive stairs
US-10975574-B2 · Apr 13, 2021 · US
Stair Tread Cover
US-2020332543-A1 · Oct 22, 2020 · US
Energy-efficient assistive stairs
US-2020149285-A1 · May 14, 2020 · US
Stair Tread Cover
US-2018347215-A1 · Dec 6, 2018 · US
Stair Tread Cover
US-2018347216-A1 · Dec 6, 2018 · US
Stair Tread Cover
US-2018347205-A1 · Dec 6, 2018 · US
Slip-resistant, self illuminated front lit article
US-2018291637-A1 · Oct 11, 2018 · US