Door descent preventing apparatus
US-12546155-B2 · Feb 10, 2026 · US
Safety devices independent of the control and operation of any machine (protective devices for the eyes or ears, worn on the body or carried in the hand, A61F9/00, A61F11/00) · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16P1/00 |
| Official title | Safety devices independent of the control and operation of any machine (protective devices for the eyes or ears, worn on the body or carried in the hand, A61F9/00, A61F11/00) |
| Display label | Safety devices independent of the control and operation of any machine (protective devices for the eyes or ears, worn on the body or carried in the hand, A61F9/00, A61F11/00) |
| Total patents | 33 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12546155-B2 · Feb 10, 2026 · US
US-12383102-B2 · Aug 12, 2025 · US
US-2025019165-A1 · Jan 16, 2025 · US
US-2024415282-A1 · Dec 19, 2024 · US
US-2024318464-A1 · Sep 26, 2024 · US
US-2024200376-A1 · Jun 20, 2024 · US
US-2023272878-A1 · Aug 31, 2023 · US
US-11420345-B2 · Aug 23, 2022 · US
US-2022087480-A1 · Mar 24, 2022 · US
US-11195402-B2 · Dec 7, 2021 · US
US-11169053-B2 · Nov 9, 2021 · US
US-11103107-B2 · Aug 31, 2021 · US
US-11060954-B2 · Jul 13, 2021 · US
US-2021027598-A1 · Jan 28, 2021 · US
US-2021018399-A1 · Jan 21, 2021 · US
US-2020408642-A1 · Dec 31, 2020 · US
US-2020376691-A1 · Dec 3, 2020 · US
US-10633156-B2 · Apr 28, 2020 · US
US-2019382174-A1 · Dec 19, 2019 · US
US-10502243-B2 · Dec 10, 2019 · US
Answers are generated from the same data shown on this page.