Miniature pump
US-12529379-B1 · Jan 20, 2026 · US
the casing consisting of a plurality of annuli bolted together
the casing consisting of a plurality of annuli bolted together · 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 | F04D1/066 |
| Official title | {the casing consisting of a plurality of annuli bolted together} |
| Display label | the casing consisting of a plurality of annuli bolted together |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 9 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High volume axial flow electric submersible pump (ESP) pump stage
US-12305494-B2 · May 20, 2025 · US
Pump unit
US-2025129787-A1 · Apr 24, 2025 · US
Pump assembly
US-12188485-B2 · Jan 7, 2025 · US
Bearing-less turbine
US-12078185-B2 · Sep 3, 2024 · US
High volume axial flow electric submersible pump (esp) pump stage
US-2024175339-A1 · May 30, 2024 · US
Motor pump, pump unit, and method of balancing impeller of motor pump
US-2024167478-A1 · May 23, 2024 · US
Pump Assembly
US-2024102487-A1 · Mar 28, 2024 · US
Centrifugal pump assembly
US-11879474-B2 · Jan 23, 2024 · US
Single wheel multi-stage radially-layered regenerative pump
US-11821429-B2 · Nov 21, 2023 · US
Modular compact pump
US-2023243354-A1 · Aug 3, 2023 · US
Balancing axial thrust in submersible well pumps
US-11686312-B2 · Jun 27, 2023 · US
Liquid pressurizing apparatus and urea synthesis plant
US-11542947-B2 · Jan 3, 2023 · US
Centrifugal pump assembly
US-2022341436-A1 · Oct 27, 2022 · US
Pump apparatus
US-2022275804-A1 · Sep 1, 2022 · US
Balancing axial thrust in submersible well pumps
US-11326607-B2 · May 10, 2022 · US
Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow
US-11323003-B2 · May 3, 2022 · US
Balancing axial thrust in submersible well pumps
US-2022090602-A1 · Mar 24, 2022 · US
Liquid pressurizing apparatus and urea synthesis plant
US-2021363996-A1 · Nov 25, 2021 · US
Ring section pump having intermediate tie rod combination
US-11118584-B2 · Sep 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D1/066?
- CPC F04D1/066 is the Cooperative Patent Classification code for “the casing consisting of a plurality of annuli bolted together.”
- How many patents are filed under CPC F04D1/066 (the casing consisting of a plurality of annuli bolted together)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F04D1/066 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).