Valve insert system
US-12297924-B2 · May 13, 2025 · US
Features relating to lubrication
Features relating to lubrication · 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 | F16K3/36 |
| Official title | Features relating to lubrication |
| Display label | Features relating to lubrication |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2017 | 2 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hard and lubricious valve surfaces, material compositions and sequences of manufacturing
US-12241561-B2 · Mar 4, 2025 · US
Hard and lubricious valve surfaces, material compositions and sequences of manufacturing
US-2024247729-A1 · Jul 25, 2024 · US
Valve control and/or lubrication system
US-11927306-B2 · Mar 12, 2024 · US
Material compositions and sequences of manufacturing
US-11898651-B2 · Feb 13, 2024 · US
Valve insert system
US-2024003434-A1 · Jan 4, 2024 · US
Valve insert system
US-11796069-B2 · Oct 24, 2023 · US
Cavity filler for a gate valve
US-2023167910-A1 · Jun 1, 2023 · US
High-temperature low-friction cobalt-free coating system for gate valves, ball valves, stems, and seats
US-11644106-B2 · May 9, 2023 · US
Valve insert system
US-2023003305-A1 · Jan 5, 2023 · US
Valve Control and/or Lubrication System
US-2022341542-A1 · Oct 27, 2022 · US
Valve control and/or lubrication system
US-11402064-B2 · Aug 2, 2022 · US
High-temperature low-friction cobalt-free coating system for gate valves, ball valves, stems, and seats
US-2022120349-A1 · Apr 21, 2022 · US
Method for diagnosing sticking of lubrication control valve of hybrid vehicle
US-11110936-B2 · Sep 7, 2021 · US
Material compositions and sequences of manufacturing
US-2021222787-A1 · Jul 22, 2021 · US
Valve Control and/or Lubrication System
US-2021222829-A1 · Jul 22, 2021 · US
Hard and lubricious valve surfaces, material compositions and sequences of manufacturing
US-10995871-B2 · May 4, 2021 · US
Valve control and/or lubrication system
US-10982808-B2 · Apr 20, 2021 · US
Valve Control and/or Lubrication System
US-2020355321-A1 · Nov 12, 2020 · US
Valve insert system
US-10697269-B2 · Jun 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K3/36?
- CPC F16K3/36 is the Cooperative Patent Classification code for “Features relating to lubrication.”
- How many patents are filed under CPC F16K3/36 (Features relating to lubrication)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC F16K3/36 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).