Diffusing member, exhaust gas purification device, and use of diffusing member in exhaust gas purification device
US-10874998-B2 · Dec 29, 2020 · US
Operations & Transport
Operations & Transport · 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 | B01F3/0446 |
| Official title | — |
| Display label | Operations & Transport (mapped technology topic) |
| Total patents | 103 |
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 | 8 |
| 2016 | 6 |
| 2017 | 11 |
| 2018 | 14 |
| 2019 | 17 |
| 2020 | 16 |
| 2021 | 21 |
| 2022 | 8 |
| 2023 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Mixing nozzles
US-2020306703-A1 · Oct 1, 2020 · US
Pack for preparing foamed food or beverage products
US-2020223625-A1 · Jul 16, 2020 · US
Process and device for dispersing gas in a liquid
US-10603643-B2 · Mar 31, 2020 · US
Methods and apparatus for gas stream mass transfer with a liquid
US-10519413-B2 · Dec 31, 2019 · US
Apparatus and method for converting liquid stream into fine droplets
US-10478840-B2 · Nov 19, 2019 · US
Minute bubble generator, home appliance provided with minute bubble generator, and method of manufacturing minute bubble generator
US-2019329193-A1 · Oct 31, 2019 · US
Fine bubble generation promoter, fine-bubble-containing liquid, and method and device for producing fine-bubble-containing liquid
US-2019329199-A1 · Oct 31, 2019 · US
Method for cleaning process plants
US-2019314874-A1 · Oct 17, 2019 · US
Bubble generator and flush toilet
US-10435876-B2 · Oct 8, 2019 · US
Method and apparatus for generating bubbles
US-2019282973-A1 · Sep 19, 2019 · US
Air bubble generation device, tubular member, air bubble generation method, and method for manufacturing air bubble generation device
US-2019275481-A1 · Sep 12, 2019 · US
Gas-dissolved liquid producing apparatus
US-2019262784-A1 · Aug 29, 2019 · US
Beverage supplying apparatus
US-2019239677-A1 · Aug 8, 2019 · US
Solids-Producing Siphoning Exchanger
US-2019168175-A1 · Jun 6, 2019 · US
System for humidifying gas streams
US-10247432-B1 · Apr 2, 2019 · US
Boron nitride foam, methods of manufacture thereof, and articles containing the boron nitride foam
US-2019077661-A1 · Mar 14, 2019 · US
Breathable gas supply apparatus
US-10201676-B2 · Feb 12, 2019 · US
Diffusing member, exhaust gas purification device, and use of diffusing member in exhaust gas purification device
US-2019030498-A1 · Jan 31, 2019 · US
Beverage aeration
US-2019002266-A1 · Jan 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01F3/0446?
- CPC B01F3/0446 is the Cooperative Patent Classification code for “Operations & Transport.”
- How many patents are filed under CPC B01F3/0446 (Operations & Transport)?
- Our database includes 103 publications tagged with this CPC code.
- Is patent activity under CPC B01F3/0446 growing?
- Publication counts under this code: 8 in 2022 vs 2 in 2023 (latest complete years).