Quick change valve trim assembly
US-11187344-B2 · Nov 30, 2021 · US
with stuffing-box {; Sealing rings}
with stuffing-box {; Sealing rings} · 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 | F16K41/02 |
| Official title | with stuffing-box {; Sealing rings} |
| Display label | with stuffing-box {; Sealing rings} |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 11 |
| 2019 | 13 |
| 2020 | 11 |
| 2021 | 17 |
| 2022 | 12 |
| 2023 | 20 |
| 2024 | 18 |
| 2025 | 16 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Locking assembly apparatus and methods for fluid ends
US-2021270382-A1 · Sep 2, 2021 · US
Pump having pilot-actuated admission valve
US-11105306-B2 · Aug 31, 2021 · US
Method of using a bonnet and stuffing box assembly
US-2021231232-A1 · Jul 29, 2021 · US
Charging valve, air conditioning system and electric vehicle
US-2021231226-A1 · Jul 29, 2021 · US
Valve for water flow control
US-2021199199-A1 · Jul 1, 2021 · US
Valve
US-2021180721-A1 · Jun 17, 2021 · US
Valve arrangement and fluid flow control element
US-2021156482-A1 · May 27, 2021 · US
Flow control valve having a sealing gasket with a secondary sealing surface
US-2021062922-A1 · Mar 4, 2021 · US
Valve Assembly for Dispensers
US-2021025500-A1 · Jan 28, 2021 · US
Valve Assembly for Dispensers
US-2021025502-A1 · Jan 28, 2021 · US
Valve Assembly for Dispensers
US-2021025503-A1 · Jan 28, 2021 · US
Valve Assembly for Dispensers
US-2021025518-A1 · Jan 28, 2021 · US
Electrically actuated flow control valve and method for operation of the flow control valve
US-2020378519-A1 · Dec 3, 2020 · US
Bonnet and stuffing box assembly
US-2020332918-A1 · Oct 22, 2020 · US
Quick Change Valve Trim Assembly
US-2020278044-A1 · Sep 3, 2020 · US
Valve assemblies, valve packing assemblies and related systems and methods
US-2020263809-A1 · Aug 20, 2020 · US
Self-cleaning valve
US-2020256481-A1 · Aug 13, 2020 · US
Multi-pressure rated valve assembly
US-10690261-B2 · Jun 23, 2020 · US
Valve assemblies, valve packing assemblies and related systems and methods
US-10670166-B2 · Jun 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K41/02?
- CPC F16K41/02 is the Cooperative Patent Classification code for “with stuffing-box {; Sealing rings}.”
- How many patents are filed under CPC F16K41/02 (with stuffing-box {; Sealing rings})?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC F16K41/02 growing?
- Publication counts under this code: 18 in 2024 vs 16 in 2025 (latest complete years).