Protective sheathings for disc brake piston-cylinder units
US-10378598-B2 · Aug 13, 2019 · US
Diaphragms
Diaphragms · 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 | F16J3/02 |
| Official title | Diaphragms |
| Display label | Diaphragms |
| Total patents | 140 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 8 |
| 2017 | 14 |
| 2018 | 19 |
| 2019 | 18 |
| 2020 | 21 |
| 2021 | 16 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pneumatic brake booster comprising a metal-coated booster housing
US-10363915-B2 · Jul 30, 2019 · US
Diaphragm assembly for a diaphragm valve, and diaphragm valve
US-2019162317-A1 · May 30, 2019 · US
Filled Resin Layer Separated Pump Housing
US-2019136845-A1 · May 9, 2019 · US
Metal diaphragm damper
US-2019107167-A1 · Apr 11, 2019 · US
Pneumatic brake booster comprising a metal-coated booster housing
US-2018370510-A1 · Dec 27, 2018 · US
Pressure accumulator
US-10145390-B2 · Dec 4, 2018 · US
Self-cleaning film system and method of forming same
US-2018333711-A1 · Nov 22, 2018 · US
Self-cleaning film system and method of forming same
US-2018333709-A1 · Nov 22, 2018 · US
Self-cleaning film system and method of forming same
US-2018333710-A1 · Nov 22, 2018 · US
Diaphragm valve, fluid control device, semiconductor manufacturing apparatus, and semiconductor manufacturing method
US-10125876-B2 · Nov 13, 2018 · US
Property enabled feature integration strategies and their fabrication methods for metallic glasses
US-10124391-B1 · Nov 13, 2018 · US
Respirator mask with voice transmittal feature
US-2018311516-A1 · Nov 1, 2018 · US
Pulsation damper
US-2018306368-A1 · Oct 25, 2018 · US
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
Diaphragms with encapsulated springs
US-10047863-B1 · Aug 14, 2018 · US
Diaphragm damper
US-2018209389-A1 · Jul 26, 2018 · US
Moisture detecting air cap indicator for expansion tank failure
US-2018195740-A1 · Jul 12, 2018 · US
Diaphragm damper device coiled wave spring and damper system
US-2018195478-A1 · Jul 12, 2018 · US
Piston pump arrangement for hygienic processing applications
US-10018192-B2 · Jul 10, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J3/02?
- CPC F16J3/02 is the Cooperative Patent Classification code for “Diaphragms.”
- How many patents are filed under CPC F16J3/02 (Diaphragms)?
- Our database includes 140 publications tagged with this CPC code.
- Is patent activity under CPC F16J3/02 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).