Gate valve
US-12338908-B2 · Jun 24, 2025 · US
Line blinds
Line blinds · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16K3/312 |
| Official title | Line blinds |
| Display label | Line blinds |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Valve for a rocket engine
US-2025137535-A1 · May 1, 2025 · US
Spectacle blind swinging devices and related methods
US-12287040-B2 · Apr 29, 2025 · US
Perimeter seated knife gate valve
US-12123513-B2 · Oct 22, 2024 · US
Spectacle blind swinging devices and related methods
US-2024084901-A1 · Mar 14, 2024 · US
Gate valve
US-11920696-B2 · Mar 5, 2024 · US
Seal support ring for a valve
US-11906066-B2 · Feb 20, 2024 · US
Space-saving multi-valve and method of operating a multi-valve
US-11892088-B2 · Feb 6, 2024 · US
Perimeter seated knife gate valve
US-2023323957-A1 · Oct 12, 2023 · US
Gasketed spectacle plate assembly for industrial pipe systems
US-11761545-B2 · Sep 19, 2023 · US
Actuator for Gate Valve and Method of Attachment
US-2023213100-A1 · Jul 6, 2023 · US
Gasketed spectacle plate assembly for industrial pipe systems
US-2023134761-A1 · May 4, 2023 · US
Gate valve
US-2023139315-A1 · May 4, 2023 · US
Space-saving multi-valve and method of operating a multi-valve
US-2023104346-A1 · Apr 6, 2023 · US
Valve assemblies and associated components
US-11512783-B2 · Nov 29, 2022 · US
Seal support ring for a valve
US-2022316602-A1 · Oct 6, 2022 · US
Flange management and services tool
US-11346465-B2 · May 31, 2022 · US
Flange management and services tool
US-2022107036-A1 · Apr 7, 2022 · US
Gate Valve
US-2022099196-A1 · Mar 31, 2022 · US
Gate valve
US-11226042-B1 · Jan 18, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K3/312?
- CPC F16K3/312 is the Cooperative Patent Classification code for “Line blinds.”
- How many patents are filed under CPC F16K3/312 (Line blinds)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC F16K3/312 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).