Rotary compressor
US-2017292520-A1 · Oct 12, 2017 · US
Mechanical Engineering
Mechanical Engineering · 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 | F04C23/02 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 620 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 26 |
| 2017 | 37 |
| 2018 | 41 |
| 2019 | 53 |
| 2020 | 69 |
| 2021 | 63 |
| 2022 | 79 |
| 2023 | 55 |
| 2024 | 63 |
| 2025 | 90 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Motor-driven fluid machine
US-2017279325-A1 · Sep 28, 2017 · US
Compressor oil separation and assembly method
US-2017268515-A1 · Sep 21, 2017 · US
Scroll compressor
US-2016348676-A1 · Dec 1, 2016 · US
Hermetic compressor
US-2016333881-A1 · Nov 17, 2016 · US
Scroll compression device
US-9494155-B2 · Nov 15, 2016 · US
Air delivery system for a farm machine
US-2016325618-A1 · Nov 10, 2016 · US
Compressor having counterweight assembly
US-2016312780-A1 · Oct 27, 2016 · US
Compressors and methods for determining optimal parking positions for compressor pistons
US-9470225-B2 · Oct 18, 2016 · US
Electric compressor
US-2016294251-A1 · Oct 6, 2016 · US
Rotary compressor
US-2016281717-A1 · Sep 29, 2016 · US
Electric scroll compressor
US-2016273536-A1 · Sep 22, 2016 · US
Phase winding and connection methods for three phase dynamoelectric machines
US-9450463-B2 · Sep 20, 2016 · US
Horizontal type scroll compressor having discharge guide between a main scroll and a motor housing
US-9441630-B2 · Sep 13, 2016 · US
Compressor with oil pump assembly
US-2016222967-A1 · Aug 4, 2016 · US
Compression system
US-2016177955-A1 · Jun 23, 2016 · US
Motor-driven compressor and mounting method for motor-driven compressor
US-9366243-B2 · Jun 14, 2016 · US
Turbocharger generating vacuum negative pressure, vacuum negative pressure supply type brake system using the same, and control method thereof
US-2016153448-A1 · Jun 2, 2016 · US
Compressor And Method Of Autonomously Inspecting Oil
US-2016123325-A1 · May 5, 2016 · US
Fluid-working machine with multi-lobe ring cam
US-9328720-B2 · May 3, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C23/02?
- CPC F04C23/02 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F04C23/02 (Mechanical Engineering)?
- Our database includes 620 publications tagged with this CPC code.
- Is patent activity under CPC F04C23/02 growing?
- Publication counts under this code: 63 in 2024 vs 90 in 2025 (latest complete years).