Portable airless sprayer
US-2021162439-A1 · Jun 3, 2021 · US
having two cylinders (in V-arrangement F04B1/04)
having two cylinders (in V-arrangement F04B1/04) · 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 | F04B1/02 |
| Official title | having two cylinders (in V-arrangement F04B1/04) |
| Display label | having two cylinders (in V-arrangement F04B1/04) |
| Total patents | 148 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 10 |
| 2018 | 15 |
| 2019 | 13 |
| 2020 | 10 |
| 2021 | 18 |
| 2022 | 22 |
| 2023 | 18 |
| 2024 | 14 |
| 2025 | 15 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ultra-long stroke multi-cylinder reciprocating pump
US-2021079901-A1 · Mar 18, 2021 · US
Electric linear-actuator pumping system
US-2020362838-A1 · Nov 19, 2020 · US
Pulsation-free wet spraying machine
US-2020355077-A1 · Nov 12, 2020 · US
Hydraulic pressure amplifier
US-2020332781-A1 · Oct 22, 2020 · US
Method for operating a piston compressor, and piston compressor
US-2020309116-A1 · Oct 1, 2020 · US
Solenoid valve for a portable hydraulic power unit
US-10705554-B2 · Jul 7, 2020 · US
Liquid delivery device
US-2020182235-A1 · Jun 11, 2020 · US
Systems and methods for reducing the oil volume and windage in fuel pumps
US-10677119-B2 · Jun 9, 2020 · US
Trigger guard and pendant for a portable hydraulic power unit
US-10656669-B2 · May 19, 2020 · US
Material dispensing system with gas removal
US-2020088177-A1 · Mar 19, 2020 · US
Pump assemblies and pumping systems incorporating pump assemblies
US-2020072201-A1 · Mar 5, 2020 · US
Liquid delivery device
US-10514028-B2 · Dec 24, 2019 · US
Piston-valve engagement in fluid sprayers
US-2019368476-A1 · Dec 5, 2019 · US
Piston engaging with valve for self-priming in fluid sprayers
US-10422325-B2 · Sep 24, 2019 · US
Method for controlling a fuel pump for a motor vehicle
US-2019264631-A1 · Aug 29, 2019 · US
Connecting rod and crosshead assembly for enhancing the performance of a reciprocating pump
US-10393113-B2 · Aug 27, 2019 · US
High-pressure positive displacement plunger pump
US-2019211817-A1 · Jul 11, 2019 · US
Coating agent pump
US-2019154019-A1 · May 23, 2019 · US
Reciprocating axial pump
US-2019093642-A1 · Mar 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B1/02?
- CPC F04B1/02 is the Cooperative Patent Classification code for “having two cylinders (in V-arrangement F04B1/04).”
- How many patents are filed under CPC F04B1/02 (having two cylinders (in V-arrangement F04B1/04))?
- Our database includes 148 publications tagged with this CPC code.
- Is patent activity under CPC F04B1/02 growing?
- Publication counts under this code: 14 in 2024 vs 15 in 2025 (latest complete years).