Liquid supply device
US-12523202-B2 · Jan 13, 2026 · US
with a number of independent working chambers which are actuated successively by one mechanism
with a number of independent working chambers which are actuated successively by one mechanism · 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 | F04B43/0045 |
| Official title | {with a number of independent working chambers which are actuated successively by one mechanism} |
| Display label | with a number of independent working chambers which are actuated successively by one mechanism |
| Total patents | 45 |
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 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 8 |
| 2019 | 3 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid supply device
US-2025059962-A1 · Feb 20, 2025 · US
Diaphragm pump
US-2023383738-A1 · Nov 30, 2023 · US
Diaphragm pump
US-11767840-B2 · Sep 26, 2023 · US
Sequentially activated multi-diaphragm foam pumps, refill units and dispenser systems having a non-uniform wobble plate
US-11766687-B2 · Sep 26, 2023 · US
A Diaphragm Pump
US-2022275798-A1 · Sep 1, 2022 · US
Sequentially activated multi-diaphragm foam pumps, refill units and dispenser systems having a non-uniform wobble plate
US-2022241807-A1 · Aug 4, 2022 · US
Diaphragm pump
US-2022235757-A1 · Jul 28, 2022 · US
Fluid control device
US-11391278-B2 · Jul 19, 2022 · US
Fluid ejection apparatus for discreet packet transfer of fluid
US-2022170452-A1 · Jun 2, 2022 · US
Fluid control device
US-11191437-B2 · Dec 7, 2021 · US
Multicompartment microfluidic bioreactors, cylindrical rotary valves and applications of same
US-2021198607-A1 · Jul 1, 2021 · US
Hypocycloid compressor
US-10920758-B2 · Feb 16, 2021 · US
Non-pulsation pump having stroke adjustment mechanism
US-10890166-B2 · Jan 12, 2021 · US
Fluid control device
US-2020378380-A1 · Dec 3, 2020 · US
System and method for improved flow uniformity in a peristaltic pump mechanism
US-10837436-B2 · Nov 17, 2020 · US
Peristaltic pump with two-part fluid chamber and associated devices, systems, and methods
US-2020300235-A1 · Sep 24, 2020 · US
Compact pump and diaphragm assembly used therein
US-10711775-B2 · Jul 14, 2020 · US
Diaphragm compressor system and method
US-10619633-B2 · Apr 14, 2020 · US
Interconnections of multiple perfused engineered tissue constructs and microbioreactors, multi-microformulators and applications of the same
US-10577574-B2 · Mar 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B43/0045?
- CPC F04B43/0045 is the Cooperative Patent Classification code for “with a number of independent working chambers which are actuated successively by one mechanism.”
- How many patents are filed under CPC F04B43/0045 (with a number of independent working chambers which are actuated successively by one mechanism)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F04B43/0045 growing?
- Publication counts under this code: 3 in 2023 vs 1 in 2025 (latest complete years).