Centrifugal compressor with piston intensifier
US-11788521-B2 · Oct 17, 2023 · US
for specific elastic fluids
for specific elastic fluids · 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 | F04B37/18 |
| Official title | for specific elastic fluids |
| Display label | for specific elastic fluids |
| Total patents | 96 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 8 |
| 2021 | 11 |
| 2022 | 3 |
| 2023 | 8 |
| 2024 | 13 |
| 2025 | 16 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A modular foreline system
US-2023307253-A1 · Sep 28, 2023 · US
Chemical and electrochemical cell electronics protection system
US-2023290973-A1 · Sep 14, 2023 · US
Reciprocating compressor
US-2023250812-A1 · Aug 10, 2023 · US
Methods for evaluating vapor pump performance
US-2023020289-A1 · Jan 19, 2023 · US
Cylindrical magnetic coupling with alternating polarity
US-11499536-B2 · Nov 15, 2022 · US
Metal hydride compressor control device and method
US-11440796-B2 · Sep 13, 2022 · US
Compressor
US-2022154709-A1 · May 19, 2022 · US
Refrigerant compresssor
US-2021404457-A1 · Dec 30, 2021 · US
Hydrogen compressor with metal hydride
US-11204021-B2 · Dec 21, 2021 · US
Compression apparatus and filling station comprising such an apparatus
US-2021332950-A1 · Oct 28, 2021 · US
Electrochemical hydrogen pump
US-2021285427-A1 · Sep 16, 2021 · US
Electrochemical hydrogen pump
US-10989184-B2 · Apr 27, 2021 · US
Linear compressor with sound dampening gaskets
US-10975853-B2 · Apr 13, 2021 · US
Cryopump, cryopump system, and cryopump regeneration method
US-2021054834-A1 · Feb 25, 2021 · US
Method for operating a compressor, and compressor
US-2021033083-A1 · Feb 4, 2021 · US
Actuating and sensing module
US-10908137-B2 · Feb 2, 2021 · US
Natural gas reciprocating compressor
US-10900476-B2 · Jan 26, 2021 · US
Metal hydride compressor control device and method
US-2021009410-A1 · Jan 14, 2021 · US
Linear compressor having suction muffler
US-10871154-B2 · Dec 22, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B37/18?
- CPC F04B37/18 is the Cooperative Patent Classification code for “for specific elastic fluids.”
- How many patents are filed under CPC F04B37/18 (for specific elastic fluids)?
- Our database includes 96 publications tagged with this CPC code.
- Is patent activity under CPC F04B37/18 growing?
- Publication counts under this code: 13 in 2024 vs 16 in 2025 (latest complete years).