Method for operating a vacuum pump system and vacuum pump system applying such method
US-2021404469-A1 · Dec 30, 2021 · US
Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel (centrifugal pumps F04D15/0072)
Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel (centrifugal pumps F04D15/0072) · 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 | F04B49/007 |
| Official title | {Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel (centrifugal pumps F04D15/0072)} |
| Display label | Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel (centrifugal pumps F04D15/0072) |
| Total patents | 176 |
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 | 6 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 10 |
| 2021 | 28 |
| 2022 | 25 |
| 2023 | 29 |
| 2024 | 27 |
| 2025 | 22 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods providing a configurable staged rate increase function to operate hydraulic fracturing units
US-2021396118-A1 · Dec 23, 2021 · US
Methods and systems for operating a fleet of pumps
US-2021355801-A1 · Nov 18, 2021 · US
Gas Compressor
US-2021348603-A1 · Nov 11, 2021 · US
Multiple wellbore hydraulic fracturing through a single pumping system
US-11149532-B2 · Oct 19, 2021 · US
Control Method of Compressor and Refrigerant Circulation System
US-2021301812-A1 · Sep 30, 2021 · US
Cryopump system, and control device and regeneration method for cryopump system
US-2021301805-A1 · Sep 30, 2021 · US
Compressor Control Method, Control Apparatus and Control System
US-2021277885-A1 · Sep 9, 2021 · US
Compression device
US-11085429-B2 · Aug 10, 2021 · US
Motor-driven, multi-output surgical pump assembly and surgical generator incorporating the same
US-2021186590-A1 · Jun 24, 2021 · US
Automatic determination of pumping methods
US-2021172301-A1 · Jun 10, 2021 · US
Hydraulic Drive System for a Construction Material Pump, and Construction Material Pump
US-2021164497-A1 · Jun 3, 2021 · US
Cooling sysytem mechanical pump diagnosis
US-2021079912-A1 · Mar 18, 2021 · US
Automated Control of Hydraulic Fracturing Pumps
US-2021040830-A1 · Feb 11, 2021 · US
Methods and systems for operating a fleet of pumps
US-10907459-B1 · Feb 2, 2021 · US
Wellbore hydraulic fracturing through a pump operating in a damage avoidance mode
US-2021010362-A1 · Jan 14, 2021 · US
Wellbore hydraulic fracturing through a common pumping source
US-2021010363-A1 · Jan 14, 2021 · US
Multiple wellbore hydraulic fracturing through a single pumping system
US-2021010361-A1 · Jan 14, 2021 · US
Hydraulic device that controls pulsation in first oil by increasing rotation number of second pump
US-10865812-B2 · Dec 15, 2020 · US
Compressed Air Production Facility, Compressed Air Pressure Setpoint Adjusting Method, and Compressed Air Pressure Setpoint Adjusting Program
US-2020340623-A1 · Oct 29, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B49/007?
- CPC F04B49/007 is the Cooperative Patent Classification code for “Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel (centrifugal pumps F04D15/0072).”
- How many patents are filed under CPC F04B49/007 (Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel (centrifugal pumps F04D15/0072))?
- Our database includes 176 publications tagged with this CPC code.
- Is patent activity under CPC F04B49/007 growing?
- Publication counts under this code: 27 in 2024 vs 22 in 2025 (latest complete years).