Hydraulic drive system for a linearly actuated hydraulic piston pump
US-10519940-B2 · Dec 31, 2019 · US
Liquefied gases
Liquefied gases · 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 | F04B2015/081 |
| Official title | {Liquefied gases} |
| Display label | Liquefied gases |
| Total patents | 110 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 12 |
| 2017 | 12 |
| 2018 | 22 |
| 2019 | 11 |
| 2020 | 12 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid supply system
US-2019353148-A1 · Nov 21, 2019 · US
Sealed and thermally insulated tank having a secondary sealing membrane equipped with a corner arrangement with corrugated metal sheets
US-10415755-B2 · Sep 17, 2019 · US
Detecting end of stroke in a hydraulic motor
US-10385890-B2 · Aug 20, 2019 · US
Vibrationally isolated cryogenic shield for local high-quality vacuum
US-2019220770-A1 · Jul 18, 2019 · US
Cryogenic pump
US-2019145392-A1 · May 16, 2019 · US
Check valve with improved response time
US-10274094-B2 · Apr 30, 2019 · US
Machine system having submersible pumping system, and method
US-10240562-B2 · Mar 26, 2019 · US
Liquid supply system
US-10233913-B2 · Mar 19, 2019 · US
Drive assembly and pump assembly arrangement for cryogenic pump
US-10184462-B2 · Jan 22, 2019 · US
Multimode gas delivery for rail tender
US-10125751-B2 · Nov 13, 2018 · US
Hydraulic drive system for a linearly actuated hydraulic piston pump
US-2018306173-A1 · Oct 25, 2018 · US
Cryogenic installation comprising a circulator
US-2018283381-A1 · Oct 4, 2018 · US
Cryogenic pump system
US-2018266405-A1 · Sep 20, 2018 · US
Method of operating cryogenic pump and cryogenic pump system
US-10066612-B2 · Sep 4, 2018 · US
Hydraulic drive multi-element cryogenic pump
US-10060421-B2 · Aug 28, 2018 · US
Pump piston having variable diameter
US-10036383-B2 · Jul 31, 2018 · US
Cryogenic pump for liquefied natural gas
US-10024311-B2 · Jul 17, 2018 · US
Cryogenic Fluid Pump
US-2018195500-A1 · Jul 12, 2018 · US
Submerged cryogenic pump with a magnetic linear coupling
US-2018180035-A1 · Jun 28, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B2015/081?
- CPC F04B2015/081 is the Cooperative Patent Classification code for “Liquefied gases.”
- How many patents are filed under CPC F04B2015/081 (Liquefied gases)?
- Our database includes 110 publications tagged with this CPC code.
- Is patent activity under CPC F04B2015/081 growing?
- Publication counts under this code: 6 in 2024 vs 15 in 2025 (latest complete years).