Flexible hopper for a conveyor system
US-2019389660-A1 · Dec 26, 2019 · US
Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence)
Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence) · 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 | B65D88/26 |
| Official title | Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence) |
| Display label | Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence) |
| Total patents | 135 |
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 | 4 |
| 2016 | 8 |
| 2017 | 27 |
| 2018 | 12 |
| 2019 | 12 |
| 2020 | 18 |
| 2021 | 15 |
| 2022 | 9 |
| 2023 | 10 |
| 2024 | 13 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Proppant discharge system and a container for use in such a proppant discharge system
US-10464741-B2 · Nov 5, 2019 · US
Dust control systems for bulk material containers
US-2019276225-A1 · Sep 12, 2019 · US
System and method for calibrating a material metering system
US-10379547-B2 · Aug 13, 2019 · US
Collapsible particulate matter container
US-10336533-B2 · Jul 2, 2019 · US
Micronized dry barite powder bulk movement
US-10322871-B2 · Jun 18, 2019 · US
Identification of material type and condition in a dry bulk material storage bin
US-10274434-B2 · Apr 30, 2019 · US
Pulverized-fuel supply unit and method, and integrated gasification combined cycle
US-2019055485-A1 · Feb 21, 2019 · US
System and method for calibrating a material metering system
US-2019033895-A1 · Jan 31, 2019 · US
Picking systems and methods
US-2018354717-A1 · Dec 13, 2018 · US
Robotic picking systems and devices
US-2018346243-A1 · Dec 6, 2018 · US
Arrangement for transporting powder
US-10144581-B2 · Dec 4, 2018 · US
Storage containers, bins and devices
US-2018319590-A1 · Nov 8, 2018 · US
Sequencing bulk material containers for continuous material usage
US-2018305142-A1 · Oct 25, 2018 · US
Closure assembly for a container and a container comprising the same
US-10086982-B2 · Oct 2, 2018 · US
Proppant mixing and metering system
US-10065812-B2 · Sep 4, 2018 · US
Collapsible particulate matter container
US-2018201437-A1 · Jul 19, 2018 · US
Methods of storing and moving proppant at location adjacent rail line
US-2018148278-A1 · May 31, 2018 · US
Methods of storing and moving proppant at location adjacent rail line
US-9914602-B2 · Mar 13, 2018 · US
Proppant discharge system and a container for use in such a proppant discharge system
US-2018050864-A1 · Feb 22, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B65D88/26?
- CPC B65D88/26 is the Cooperative Patent Classification code for “Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence).”
- How many patents are filed under CPC B65D88/26 (Hoppers, i.e. containers having funnel-shaped discharge sections (B65D88/34 - B65D88/78 take precedence))?
- Our database includes 135 publications tagged with this CPC code.
- Is patent activity under CPC B65D88/26 growing?
- Publication counts under this code: 13 in 2024 vs 6 in 2025 (latest complete years).