Apparatus and method for dry forming cellulose products
US-2026062869-A1 · Mar 5, 2026 · US
Hollow articles
Hollow articles · 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 | B27N5/02 |
| Official title | Hollow articles |
| Display label | Hollow articles |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 7 |
| 2024 | 10 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compositions for Fibreboards with Enhanced Properties Upon Fast-Curing at Low Temperature
US-2026022245-A1 · Jan 22, 2026 · US
Compression molded double wall blocks for a pallet and associated methods
US-12496750-B2 · Dec 16, 2025 · US
Compression molded double wall blocks for a pallet and associated methods
US-2025375925-A1 · Dec 11, 2025 · US
Compositions for Fibreboards With Enhanced Properties Upon Fast-Curing at Low Temperature
US-2025360648-A1 · Nov 27, 2025 · US
Molding tool and method for laminating three-dimensional molded parts made of a fiber-containing material
US-2025289200-A1 · Sep 18, 2025 · US
Method for producing a building element, a pressing device and a method of embossing a wooden surface
US-12350917-B2 · Jul 8, 2025 · US
Multiple composite bicycle rim
US-2025074107-A1 · Mar 6, 2025 · US
Hollow board
US-12172411-B2 · Dec 24, 2024 · US
Method for manufacturing three-dimensional products from a fiber-containing material using at least one forming tool and forming tool
US-2024416611-A1 · Dec 19, 2024 · US
Method for processing planar material webs made of a fiber-containing material
US-2024416612-A1 · Dec 19, 2024 · US
Tools comprising repeating structures formed using additive manufacturing processes
US-2024401272-A1 · Dec 5, 2024 · US
Method for producing molding and/or drying modules for the production of containers comprising fibers, method and device for producing a container comprising fibers using a molding and/or drying module
US-2024200277-A1 · Jun 20, 2024 · US
Method for producing a container comprising fibers with a rim comprising fibers, a container comprising fibers, and a device for carrying out the method
US-2024198557-A1 · Jun 20, 2024 · US
Method and device for monitoring and regulating a wall thickness distribution in a production process of containers comprising fibers, container comprising fibers and device for producing a container comprising fibers
US-2024200269-A1 · Jun 20, 2024 · US
Assembly with osb with acoustic dampening properties
US-2024190038-A1 · Jun 13, 2024 · US
Method for the production of three-dimensional molded parts from a fiber-containing material and fiber processing device
US-2024116213-A1 · Apr 11, 2024 · US
Molded article provided with a resin part
US-11891498-B2 · Feb 6, 2024 · US
Hollow board
US-2023405977-A1 · Dec 21, 2023 · US
Method for producing a building element, a pressing device and a method of embossing a wooden surface
US-2023330983-A1 · Oct 19, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B27N5/02?
- CPC B27N5/02 is the Cooperative Patent Classification code for “Hollow articles.”
- How many patents are filed under CPC B27N5/02 (Hollow articles)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC B27N5/02 growing?
- Publication counts under this code: 10 in 2024 vs 6 in 2025 (latest complete years).