Piston Ball Guide for a Ball Pump
US-2018298895-A1 · Oct 18, 2018 · US
shaped as balls
shaped as balls · 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 | F16K15/04 |
| Official title | shaped as balls |
| Display label | shaped as balls |
| Total patents | 189 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 16 |
| 2017 | 21 |
| 2018 | 23 |
| 2019 | 19 |
| 2020 | 29 |
| 2021 | 16 |
| 2022 | 20 |
| 2023 | 15 |
| 2024 | 9 |
| 2025 | 11 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
One-way valve devices
US-10100940-B2 · Oct 16, 2018 · US
Ball Cage with Directed Flow Paths for a Ball Pump
US-2018291891-A1 · Oct 11, 2018 · US
Valve mechanism
US-2018274659-A1 · Sep 27, 2018 · US
No Filter No Run Fluid Filtration System
US-2018221797-A1 · Aug 9, 2018 · US
Device for storing and vaporizing liquid
US-10034495-B2 · Jul 31, 2018 · US
Selectively operated two way check valve for subterranean use
US-9976387-B2 · May 22, 2018 · US
Ball check valve integration to ICD
US-9963953-B2 · May 8, 2018 · US
Fuel tank safety valve
US-2018105034-A1 · Apr 19, 2018 · US
Control valve unit
US-2018100600-A1 · Apr 12, 2018 · US
Refillable dispensing systems and components
US-2018071762-A1 · Mar 15, 2018 · US
Hydraulic control system for a transmission
US-2018045302-A1 · Feb 15, 2018 · US
A washing machine drainage structure
US-2018030641-A1 · Feb 1, 2018 · US
Device for storing and vaporizing liquid
US-2018020730-A1 · Jan 25, 2018 · US
Pressure change damper for a hydraulic vehicle brake system with brake force control, and hydraulic vehicle brake system with brake force control with such a pressure change damper
US-9855938-B2 · Jan 2, 2018 · US
Electric compressor
US-2017356331-A1 · Dec 14, 2017 · US
Refillable dispensing systems and components
US-9827582-B2 · Nov 28, 2017 · US
Paint sprayer pump cartridge
US-2017292506-A1 · Oct 12, 2017 · US
Adjustable stop for check valve
US-2017284550-A1 · Oct 5, 2017 · US
Check valve assembly
US-9772041-B2 · Sep 26, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/04?
- CPC F16K15/04 is the Cooperative Patent Classification code for “shaped as balls.”
- How many patents are filed under CPC F16K15/04 (shaped as balls)?
- Our database includes 189 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/04 growing?
- Publication counts under this code: 9 in 2024 vs 11 in 2025 (latest complete years).