Multi-stage shaft seal
US-12510187-B2 · Dec 30, 2025 · US
Composite packings
Composite packings · 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 | F16K5/0673 |
| Official title | {Composite packings} |
| Display label | Composite packings |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 2 |
| 2020 | 7 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Control valves with adjustable valve packing
US-2025189058-A1 · Jun 12, 2025 · US
Multi-way valve and a heat pump system including the same
US-2025180130-A1 · Jun 5, 2025 · US
Multi-stage shaft seal
US-2024401717-A1 · Dec 5, 2024 · US
Seal ring structure for low torque valve fire-safe
US-11940060-B2 · Mar 26, 2024 · US
System and method for valve seat arrangements
US-11754190-B2 · Sep 12, 2023 · US
Seal ring structure for low torque valve fire-safe
US-2023151893-A1 · May 18, 2023 · US
Floating valve seat for a rotary control valve for use in severe service applications
US-11644109-B2 · May 9, 2023 · US
Ball valve seal
US-11448321-B2 · Sep 20, 2022 · US
Floating valve seat for a rotary control valve for use in severe service applications
US-2022145999-A1 · May 12, 2022 · US
Seat insert in a ball valve for cryogenic applications
US-11326700-B2 · May 10, 2022 · US
System and method for valve seat arrangements
US-2022120350-A1 · Apr 21, 2022 · US
Floating valve seat for a rotary control valve for use in severe service applications
US-11242933-B2 · Feb 8, 2022 · US
System and method for valve seat arrangements
US-11199270-B1 · Dec 14, 2021 · US
Self-relieving ball valve seat
US-11143313-B2 · Oct 12, 2021 · US
Valve seats, valve assemblies, and related methods
US-11105428-B2 · Aug 31, 2021 · US
Seat insert in a ball valve for cryogenic applications
US-2021199203-A1 · Jul 1, 2021 · US
Floating Valve Seat For A Rotary Control Valve For Use In Severe Service Applications
US-2020393050-A1 · Dec 17, 2020 · US
Valve seats, valve assemblies, and related methods
US-10801627-B2 · Oct 13, 2020 · US
Valve seats, valve assemblies, and related methods
US-2020284358-A1 · Sep 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K5/0673?
- CPC F16K5/0673 is the Cooperative Patent Classification code for “Composite packings.”
- How many patents are filed under CPC F16K5/0673 (Composite packings)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC F16K5/0673 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).