Valve for a refrigeration application
US-2025198538-A1 · Jun 19, 2025 · US
Spindle sealings
Spindle sealings · 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 | F16K41/00 |
| Official title | Spindle sealings |
| Display label | Spindle sealings |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Valve for a refrigeration application
US-2025180123-A1 · Jun 5, 2025 · US
Valve for a refrigeration application
US-2025067364-A1 · Feb 27, 2025 · US
Valve device
US-2024369145-A1 · Nov 7, 2024 · US
Valve device
US-12078253-B2 · Sep 3, 2024 · US
Butterfly valve assembly, in particular for a gas flow in a fuel cell system
US-2024052930-A1 · Feb 15, 2024 · US
Valve device
US-2023407977-A1 · Dec 21, 2023 · US
Valve device
US-11788634-B2 · Oct 17, 2023 · US
Steam valve
US-11644104-B2 · May 9, 2023 · US
Valve device
US-2023110298-A1 · Apr 13, 2023 · US
Valve device
US-11560958-B2 · Jan 24, 2023 · US
Steam valve
US-2022299117-A1 · Sep 22, 2022 · US
Valve linear drive and valve
US-11415239-B2 · Aug 16, 2022 · US
Valve device
US-2022243830-A1 · Aug 4, 2022 · US
Valve device
US-11333258-B2 · May 17, 2022 · US
Annulus safety valve system and method
US-11261978-B2 · Mar 1, 2022 · US
Valve Linear Drive and Valve
US-2021381606-A1 · Dec 9, 2021 · US
Valve device
US-2021080014-A1 · Mar 18, 2021 · US
Annulus safety valve system and method
US-2020308925-A1 · Oct 1, 2020 · US
Flow rate control valve
US-2020116109-A1 · Apr 16, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K41/00?
- CPC F16K41/00 is the Cooperative Patent Classification code for “Spindle sealings.”
- How many patents are filed under CPC F16K41/00 (Spindle sealings)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC F16K41/00 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).