Bellows pump device
US-12553429-B2 · Feb 17, 2026 · US
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with two or more bellows in parallel
with two or more bellows in parallel · 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 | F04B45/022 |
| Official title | {with two or more bellows in parallel} |
| Display label | with two or more bellows in parallel |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 1 |
| 2024 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Conveying device
US-12553430-B2 · Feb 17, 2026 · US
Conveying Device
US-2024200542-A1 · Jun 20, 2024 · US
Bellows pump device
US-11920580-B2 · Mar 5, 2024 · US
Bellows pump device
US-2024044325-A1 · Feb 8, 2024 · US
Bellows pump device
US-2022341414-A1 · Oct 27, 2022 · US
Hypocycloid compressor
US-10920758-B2 · Feb 16, 2021 · US
Bellows pump apparatus
US-10718324-B2 · Jul 21, 2020 · US
Bellows pump device
US-2020182234-A1 · Jun 11, 2020 · US
Liquid supply system
US-2020032785-A1 · Jan 30, 2020 · US
Liquid supply system
US-2020011323-A1 · Jan 9, 2020 · US
Hypocycloid Compressor
US-2020003197-A1 · Jan 2, 2020 · US
Bellows pump device
US-10408207-B2 · Sep 10, 2019 · US
Bellows pump device
US-10309391-B2 · Jun 4, 2019 · US
Bellows pump apparatus
US-2017350382-A1 · Dec 7, 2017 · US
Bellows pump device
US-2017218946-A1 · Aug 3, 2017 · US
Bellows pump device
US-2017191476-A1 · Jul 6, 2017 · US
Expander system
US-9316419-B2 · Apr 19, 2016 · US
Diaphragm pump with inlet pathways passing through mounting holes
US-9217425-B2 · Dec 22, 2015 · US