Fluid mixing systems and methods of use
US-12558657-B2 · Feb 24, 2026 · US
Couplings
Couplings · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01F35/31 |
| Official title | Couplings |
| Display label | Couplings |
| Total patents | 62 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 9 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 8 |
| 2025 | 4 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Drive socket connection
US-2025262603-A1 · Aug 21, 2025 · US
Imbalance compensated shaker for mixing fluidic samples
US-2025256251-A1 · Aug 14, 2025 · US
Thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials
US-2025108344-A1 · Apr 3, 2025 · US
Thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materials
US-12263453-B1 · Apr 1, 2025 · US
Device for extracting polysaccharide from acaudina molpadioides
US-12151184-B2 · Nov 26, 2024 · US
Food preparation appliance with a detachable tool
US-12137840-B2 · Nov 12, 2024 · US
Fluid mixing systems and methods of use
US-2024342670-A1 · Oct 17, 2024 · US
Fluid mixing systems and methods of use
US-2024269628-A1 · Aug 15, 2024 · US
Agitation assemblies for a spreader
US-12005410-B2 · Jun 11, 2024 · US
Fluid mixing systems and methods of use
US-11944945-B2 · Apr 2, 2024 · US
Food processing apparatus with blade arrangement
US-2024074616-A1 · Mar 7, 2024 · US
Systems for locating a motor in stand mixers
US-2024066482-A1 · Feb 29, 2024 · US
Lock member, rotary head, rotary assembly, shaft coupler, container, and food processor
US-2023270288-A1 · Aug 31, 2023 · US
Appliance for making ice cream
US-11707073-B2 · Jul 25, 2023 · US
Unidirectional Or Bidirectional Rotary Drive
US-2023089788-A1 · Mar 23, 2023 · US
Food preparation appliance with a detachable tool
US-2022304512-A1 · Sep 29, 2022 · US
Food preparation appliance with a detachable tool
US-11395563-B2 · Jul 26, 2022 · US
Stand mixer with mechanism to lift head
US-11358106-B2 · Jun 14, 2022 · US
Rotary machine for mixing, pumping or agitating a fluid and a method of mounting
US-11339803-B2 · May 24, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01F35/31?
- CPC B01F35/31 is the Cooperative Patent Classification code for “Couplings.”
- How many patents are filed under CPC B01F35/31 (Couplings)?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC B01F35/31 growing?
- Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).