Graphene embedded seal
US-11519507-B2 · Dec 6, 2022 · US
Packing materials therefor
Packing materials therefor · 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 | F16J15/20 |
| Official title | Packing materials therefor |
| Display label | Packing materials therefor |
| Total patents | 86 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 15 |
| 2023 | 10 |
| 2024 | 8 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for seal retention
US-11499500-B2 · Nov 15, 2022 · US
Polymer seal assembly
US-11460112-B2 · Oct 4, 2022 · US
Shaft sealing structure
US-2022307600-A1 · Sep 29, 2022 · US
Valve assemblies, valve packing assemblies and related systems and methods
US-11434999-B2 · Sep 6, 2022 · US
Seal system
US-2022193998-A1 · Jun 23, 2022 · US
Resin composition, molded article, and automatic transmission
US-2022186016-A1 · Jun 16, 2022 · US
Sliding components
US-2022170511-A1 · Jun 2, 2022 · US
Scraper ring
US-2022163031-A1 · May 26, 2022 · US
Scraper ring assembly
US-2022163032-A1 · May 26, 2022 · US
Dispensing seal
US-2022136606-A1 · May 5, 2022 · US
Graphene embedded seal
US-2022099186-A1 · Mar 31, 2022 · US
Flow control valve seal and flow control valve device
US-2022074503-A1 · Mar 10, 2022 · US
Seal apparatus and methods of use
US-11255153-B2 · Feb 22, 2022 · US
Pump seal
US-2022018435-A1 · Jan 20, 2022 · US
Gland packing and packing structure
US-2021348686-A1 · Nov 11, 2021 · US
Seal apparatus and methods of use
US-11168536-B2 · Nov 9, 2021 · US
Sealing material
US-11091622-B2 · Aug 17, 2021 · US
Component Assembly for a Motor Vehicle
US-2021222736-A1 · Jul 22, 2021 · US
Systems and methods for seal retention
US-2020386312-A1 · Dec 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J15/20?
- CPC F16J15/20 is the Cooperative Patent Classification code for “Packing materials therefor.”
- How many patents are filed under CPC F16J15/20 (Packing materials therefor)?
- Our database includes 86 publications tagged with this CPC code.
- Is patent activity under CPC F16J15/20 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).