Prosthetic device, system and method for increasing vacuum attachment
US-10369018-B2 · Aug 6, 2019 · US
Valve systems
Valve systems · Cooperative Patent Classification (CPC)
Agriculture, food, personal care, health, and life sciences.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | A61F2/748 |
| Official title | {Valve systems} |
| Display label | Valve systems |
| Total patents | 194 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 8 |
| 2017 | 17 |
| 2018 | 18 |
| 2019 | 22 |
| 2020 | 19 |
| 2021 | 21 |
| 2022 | 20 |
| 2023 | 24 |
| 2024 | 13 |
| 2025 | 15 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dynamic support apparatus and system
US-10201439-B2 · Feb 12, 2019 · US
Ankle-foot prosthesis for automatic adaptation to sloped walking surfaces
US-10105243-B2 · Oct 23, 2018 · US
Pump mechanism
US-2018296371-A1 · Oct 18, 2018 · US
Hydraulic valve
US-2018280162-A1 · Oct 4, 2018 · US
Orthopedic device
US-2018256372-A1 · Sep 13, 2018 · US
Prosthetic device, system and method for increasing vacuum attachment
US-2018221176-A1 · Aug 9, 2018 · US
Pump mechanism
US-10028845-B2 · Jul 24, 2018 · US
Pump system
US-2018193173-A1 · Jul 12, 2018 · US
Dynamic support apparatus and system
US-2018161182-A1 · Jun 14, 2018 · US
Hydraulic valve
US-9993355-B2 · Jun 12, 2018 · US
Orthopedic device
US-9993356-B2 · Jun 12, 2018 · US
Prosthetic feet having heel height adjustability
US-2018153712-A1 · Jun 7, 2018 · US
Foot prosthesis
US-2018125679-A1 · May 10, 2018 · US
Membrane pump system for use with a prosthetic system
US-9943421-B2 · Apr 17, 2018 · US
Actuator-damper unit
US-2018098864-A1 · Apr 12, 2018 · US
Prosthetic hydraulic joint with accumulator and methods for controlling joint
US-2018078389-A1 · Mar 22, 2018 · US
Orthopedic device with a joint
US-9913739-B2 · Mar 13, 2018 · US
Energy Storing Prosthetic Knee Actuator
US-2018036150-A1 · Feb 8, 2018 · US
Hydraulic valve
US-2018008434-A1 · Jan 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A61F2/748?
- CPC A61F2/748 is the Cooperative Patent Classification code for “Valve systems.”
- How many patents are filed under CPC A61F2/748 (Valve systems)?
- Our database includes 194 publications tagged with this CPC code.
- Is patent activity under CPC A61F2/748 growing?
- Publication counts under this code: 13 in 2024 vs 15 in 2025 (latest complete years).