Reciprocating pump power end with monolithic core
US-12535069-B2 · Jan 27, 2026 · US
casings, housings
casings, housings · 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 | F04B27/0891 |
| Official title | {casings, housings} |
| Display label | casings, housings |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reciprocating pump power end with monolithic core
US-2025389269-A1 · Dec 25, 2025 · US
Pump fluid end with toroidal surface
US-2025290506-A1 · Sep 18, 2025 · US
Suction damping case
US-11905974-B2 · Feb 20, 2024 · US
Vapor injected piston compressor
US-11629709-B2 · Apr 18, 2023 · US
Multi-stage compressor and method of controlling the same
US-11353013-B2 · Jun 7, 2022 · US
Vapor injected piston compressor
US-2021388827-A1 · Dec 16, 2021 · US
Variable displacement swash plate compressor
US-11199184-B2 · Dec 14, 2021 · US
Suction damping case
US-2021102556-A1 · Apr 8, 2021 · US
Multi-Stage Compressor and Method of Controlling the Same
US-2021054845-A1 · Feb 25, 2021 · US
Method for producing a swashplate
US-10792733-B2 · Oct 6, 2020 · US
Variable displacement swash plate compressor
US-2020309106-A1 · Oct 1, 2020 · US
Variable Pressure Air Pump
US-2020056601-A1 · Feb 20, 2020 · US
Drive assembly and pump assembly arrangement for cryogenic pump
US-10184462-B2 · Jan 22, 2019 · US
Double-headed swash type compressor and method for manufacturing cylinder block
US-10167858-B2 · Jan 1, 2019 · US
Variable displacement type swash plate compressor
US-10072648-B2 · Sep 11, 2018 · US
Method for producing a swashplate
US-2018154449-A1 · Jun 7, 2018 · US
Double-headed swash type compressor and method for manufacturing cylinder block
US-2018030970-A1 · Feb 1, 2018 · US
Variable displacement type swash plate compressor
US-2017276126-A1 · Sep 28, 2017 · US
Three-bore variable displacement compressor with a swash plate having an adjustable incline
US-9765765-B2 · Sep 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B27/0891?
- CPC F04B27/0891 is the Cooperative Patent Classification code for “casings, housings.”
- How many patents are filed under CPC F04B27/0891 (casings, housings)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC F04B27/0891 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).