Shaft blowout prevention device
US-2017370181-A1 · Dec 28, 2017 · US
specially adapted operating means therefor (operating means per se F16K31/00)
specially adapted operating means therefor (operating means per se F16K31/00) · 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 | F16K1/221 |
| Official title | {specially adapted operating means therefor (operating means per se F16K31/00)} |
| Display label | specially adapted operating means therefor (operating means per se F16K31/00) |
| Total patents | 375 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 26 |
| 2017 | 38 |
| 2018 | 45 |
| 2019 | 44 |
| 2020 | 40 |
| 2021 | 41 |
| 2022 | 47 |
| 2023 | 21 |
| 2024 | 27 |
| 2025 | 21 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary actuation mechanism
US-2017356565-A1 · Dec 14, 2017 · US
Biasing device for linkage system and method of making and using the same
US-2017328491-A1 · Nov 16, 2017 · US
Control device
US-2017328413-A1 · Nov 16, 2017 · US
Exhaust gas flap drive
US-2017268433-A1 · Sep 21, 2017 · US
Electric air flow control device for internal combustion engines
US-9745646-B2 · Aug 29, 2017 · US
Handle insert for valve
US-9695947-B2 · Jul 4, 2017 · US
Drive force transmission device
US-9683610-B2 · Jun 20, 2017 · US
Valve comprising an improved valve body and method for producing such a valve
US-2017146144-A1 · May 25, 2017 · US
Shape memory alloy valve
US-9651158-B2 · May 16, 2017 · US
Sector gear with integrated bushing
US-9638108-B2 · May 2, 2017 · US
Setting/operating device
US-2017114919-A1 · Apr 27, 2017 · US
System and method to reduce standby energy loss in a gas burning appliance and components for use therewith
US-2017102166-A1 · Apr 13, 2017 · US
Butterfly Valve
US-2017089488-A1 · Mar 30, 2017 · US
Fluid control valve utilizing shape memory alloy driving spring
US-2017002949-A1 · Jan 5, 2017 · US
Cryogenic cam butterfly valve
US-9506571-B1 · Nov 29, 2016 · US
System for gas distribution and mass flow measurement
US-9500505-B2 · Nov 22, 2016 · US
Butterfly valve arrangement
US-9482364-B2 · Nov 1, 2016 · US
Integral filter and regulator for valve
US-9483061-B2 · Nov 1, 2016 · US
System and method for controlling a compressor inlet valve
US-9482346-B2 · Nov 1, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K1/221?
- CPC F16K1/221 is the Cooperative Patent Classification code for “specially adapted operating means therefor (operating means per se F16K31/00).”
- How many patents are filed under CPC F16K1/221 (specially adapted operating means therefor (operating means per se F16K31/00))?
- Our database includes 375 publications tagged with this CPC code.
- Is patent activity under CPC F16K1/221 growing?
- Publication counts under this code: 27 in 2024 vs 21 in 2025 (latest complete years).