Slip ring seal arrangement with split shaft sleeve
US-11435000-B2 · Sep 6, 2022 · US
sealed by a packing
sealed by a packing · 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 | F16J15/38 |
| Official title | sealed by a packing |
| Display label | sealed by a packing |
| Total patents | 86 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 11 |
| 2020 | 16 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 10 |
| 2024 | 8 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Mechanical seal arrangement suitable for pressure reversal
US-2022128152-A1 · Apr 28, 2022 · US
Main seal assembly
US-2022056808-A1 · Feb 24, 2022 · US
Systems and methods for improving start up wear performance of carbon seals
US-11255205-B2 · Feb 22, 2022 · US
Shaft Seal Arrangement
US-2021231217-A1 · Jul 29, 2021 · US
Deployable pressure energized sealing backup systems for improved long term reliability
US-2021156479-A1 · May 27, 2021 · US
Cartridge seal assembly for rotational equipment
US-2021140547-A1 · May 13, 2021 · US
Gap secondary seal support template
US-10948085-B2 · Mar 16, 2021 · US
Seal assembly for reciprocating compressor
US-10883483-B2 · Jan 5, 2021 · US
Mechanical seal
US-10883606-B2 · Jan 5, 2021 · US
Mechanical seal
US-10876633-B2 · Dec 29, 2020 · US
Slip ring seal arrangement with split shaft sleeve
US-2020378502-A1 · Dec 3, 2020 · US
Shaft seal assembly for a turbine engine
US-10830078-B2 · Nov 10, 2020 · US
Gap secondary seal support template
US-2020347938-A1 · Nov 5, 2020 · US
Geared turbofan engine and spline arrangement
US-10823004-B2 · Nov 3, 2020 · US
Sealing device and method for assembling same
US-2020292081-A1 · Sep 17, 2020 · US
Systems and methods for improving start up wear performance of carbon seals
US-2020284155-A1 · Sep 10, 2020 · US
Mecanical seal
US-2020278029-A1 · Sep 3, 2020 · US
Impeller cover, rotary machine, and impeller cover manufacturing method
US-10683870-B2 · Jun 16, 2020 · US
Gas seal
US-10670149-B2 · Jun 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J15/38?
- CPC F16J15/38 is the Cooperative Patent Classification code for “sealed by a packing.”
- How many patents are filed under CPC F16J15/38 (sealed by a packing)?
- Our database includes 86 publications tagged with this CPC code.
- Is patent activity under CPC F16J15/38 growing?
- Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).