Method for powder flow control
US-12420245-B1 · Sep 23, 2025 · US
using gravity, e.g. from a hopper
using gravity, e.g. from a hopper · 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 | B01F35/7173 |
| Official title | {using gravity, e.g. from a hopper} |
| Display label | using gravity, e.g. from a hopper |
| Total patents | 51 |
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 | 9 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Multi-tiered dispersion adapter for conveyor proppant delivery systems
US-2025108348-A1 · Apr 3, 2025 · US
Continuous Mixing Device And Related Method
US-2024375064-A1 · Nov 14, 2024 · US
Carbonated beverage makers, methods, and systems
US-2024350987-A1 · Oct 24, 2024 · US
Bulk material unloading systems and methods
US-12116224-B2 · Oct 15, 2024 · US
Carbonation cup for carbonated beverage maker
US-12048905-B2 · Jul 30, 2024 · US
Bulk material unloading systems and methods
US-2023174326-A1 · Jun 8, 2023 · US
System for providing building materials including a lifting device
US-11660781-B2 · May 30, 2023 · US
Carbonated beverage makers, methods, and systems
US-2023095141-A1 · Mar 30, 2023 · US
Carbonated beverage makers, methods, and systems
US-11524268-B2 · Dec 13, 2022 · US
Unit for passive transfer of CO2 from flue gas or ambient air
US-11452974-B2 · Sep 27, 2022 · US
Unit for Passive Transfer of CO2 from Flue Gas or Ambient Air
US-2021394131-A1 · Dec 23, 2021 · US
Blender unit with integrated container support frame
US-11192077-B2 · Dec 7, 2021 · US
Bone cement applicator with retractable mixing rod and method for production of a bone cement
US-11109905-B2 · Sep 7, 2021 · US
Bone cement applicator with retractable mixing rod and method for production of a bone cement
US-11109906-B2 · Sep 7, 2021 · US
Apparatus and method for servicing a well
US-10920553-B2 · Feb 16, 2021 · US
System for providing building materials
US-2021008761-A1 · Jan 14, 2021 · US
System for passive permeation of a biological material and method of using same
US-2020404902-A1 · Dec 31, 2020 · US
System and method for continuous manufacture of joint compound
US-2020261864-A1 · Aug 20, 2020 · US
Blender unit with integrated container support frame
US-2020147566-A1 · May 14, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01F35/7173?
- CPC B01F35/7173 is the Cooperative Patent Classification code for “using gravity, e.g. from a hopper.”
- How many patents are filed under CPC B01F35/7173 (using gravity, e.g. from a hopper)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC B01F35/7173 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).