System for Connecting Rigid Pipes and for Connecting Flexible Pipes, and Fittings for Such a System
US-2026029073-A1 · Jan 29, 2026 · US
Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members · 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 | F16L33/20 |
| Official title | Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members |
| Display label | Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members |
| Total patents | 25 |
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 | 5 |
| 2017 | 2 |
| 2018 | 3 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System for connecting rigid pipes and for connecting flexible pipes, and fittings for such a system
US-12467563-B2 · Nov 11, 2025 · US
Flow restricting orifice
US-12305676-B2 · May 20, 2025 · US
Systems and methods for an integrated hose assembly
US-12098973-B2 · Sep 24, 2024 · US
Flow Restricting Orifice
US-2024191732-A1 · Jun 13, 2024 · US
System for Connecting Rigid Pipes and for Connecting Flexible Pipes, and Fittings for Such a System
US-2024151331-A1 · May 9, 2024 · US
Connection coupling
US-11692655-B2 · Jul 4, 2023 · US
Multi-lumen hose and connector nipple
US-11598460-B2 · Mar 7, 2023 · US
Systems and methods for an integrated hose assembly
US-2022276112-A1 · Sep 1, 2022 · US
Connection coupling
US-2021215285-A1 · Jul 15, 2021 · US
Fitting element with bio-compatible sealing
US-10989340-B2 · Apr 27, 2021 · US
Multi-lumen hose and connector nipple
US-2021003236-A1 · Jan 7, 2021 · US
Hydraulic coupling devices and assemblies
US-2020049292-A1 · Feb 13, 2020 · US
Hose line, and filter screen for a hose line
US-10549221-B2 · Feb 4, 2020 · US
Hose line, and filter screen for a hose line
US-2018345179-A1 · Dec 6, 2018 · US
Multi-layer expandable hose
US-9863565-B2 · Jan 9, 2018 · US
Crimpable or swageable fluid power ferrules, couplings, systems and methods employing torque communication
US-9857008-B2 · Jan 2, 2018 · US
Hose connector and method for the fluid-tight connection of one end of a fluid line to such a hose connector
US-2017356578-A1 · Dec 14, 2017 · US
Fitting element with bio-compatible sealing
US-2017045165-A1 · Feb 16, 2017 · US
Fitting element with bio-compatible sealing
US-9494563-B2 · Nov 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L33/20?
- CPC F16L33/20 is the Cooperative Patent Classification code for “Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members.”
- How many patents are filed under CPC F16L33/20 (Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC F16L33/20 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).