Mechanical drive system for a pulseless positive displacement pump
US-10161393-B2 · Dec 25, 2018 · US
having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence)
having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence) · 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 | F04B45/04 |
| Official title | having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence) |
| Display label | having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence) |
| Total patents | 240 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 17 |
| 2017 | 25 |
| 2018 | 26 |
| 2019 | 31 |
| 2020 | 30 |
| 2021 | 25 |
| 2022 | 23 |
| 2023 | 18 |
| 2024 | 17 |
| 2025 | 14 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Structure for securing diaphragm, diaphragm pump and valve device equipped with the same, and method of securing diaphragm
US-10107280-B2 · Oct 23, 2018 · US
Pump system
US-2018193173-A1 · Jul 12, 2018 · US
High temperature synthesis for power production and storage
US-2018180325-A1 · Jun 28, 2018 · US
Diaphragm pump
US-9970429-B2 · May 15, 2018 · US
Over-center linkage
US-9903360-B2 · Feb 27, 2018 · US
One piece diaphragm
US-2018045190-A1 · Feb 15, 2018 · US
Pump mechanism for vacuum suspension system
US-2018008436-A1 · Jan 11, 2018 · US
Pump unit driven by an electric motor
US-9828981-B2 · Nov 28, 2017 · US
Disc pump with advanced actuator
US-9797392-B2 · Oct 24, 2017 · US
Sequentially activated multi-diaphragm foam pumps, refill units and dispenser systems
US-2017290470-A1 · Oct 12, 2017 · US
Electric drive system for a pulseless positive displacement pump
US-9784265-B2 · Oct 10, 2017 · US
Pump assembly
US-9784264-B2 · Oct 10, 2017 · US
Pulseless positive displacement pump and method of pulselessly displacing fluid
US-9777722-B2 · Oct 3, 2017 · US
Hydraulic drive system for a pulseless positive displacement pump
US-9777721-B2 · Oct 3, 2017 · US
Three Piece Pump
US-2017266680-A1 · Sep 21, 2017 · US
Fuel supply apparatus for general purpose engine
US-2017268461-A1 · Sep 21, 2017 · US
Pump mechanism for vacuum suspension system
US-9757256-B2 · Sep 12, 2017 · US
Airflow generator
US-2017254323-A1 · Sep 7, 2017 · US
Apparatus and method for providing a user interface to an information processing system
US-9752568-B2 · Sep 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B45/04?
- CPC F04B45/04 is the Cooperative Patent Classification code for “having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence).”
- How many patents are filed under CPC F04B45/04 (having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence))?
- Our database includes 240 publications tagged with this CPC code.
- Is patent activity under CPC F04B45/04 growing?
- Publication counts under this code: 17 in 2024 vs 14 in 2025 (latest complete years).