Components for breathing circuits
US-10159814-B2 · Dec 25, 2018 · US
with annular openings, e.g. for forming tubular articles
with annular openings, e.g. for forming tubular 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 | B29C48/32 |
| Official title | with annular openings, e.g. for forming tubular articles |
| Display label | with annular openings, e.g. for forming tubular articles |
| Total patents | 214 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 12 |
| 2017 | 24 |
| 2018 | 25 |
| 2019 | 24 |
| 2020 | 30 |
| 2021 | 21 |
| 2022 | 19 |
| 2023 | 22 |
| 2024 | 11 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyolefin compositions and articles manufactured therefrom
US-10160848-B2 · Dec 25, 2018 · US
Method of manufacturing porous separator comprising elastic material, porous separator manufactured by the method, and secondary battery comprising the separator
US-10135053-B2 · Nov 20, 2018 · US
Processing aid composition comprising a sulfonate-containing fluorinated polymer
US-2018319986-A1 · Nov 8, 2018 · US
Parison guide
US-2018319069-A1 · Nov 8, 2018 · US
Tearable tube formed from fluororesin
US-2018281262-A1 · Oct 4, 2018 · US
Co-extruded, multi-layered battery separator
US-2018261817-A1 · Sep 13, 2018 · US
Method of making a co-extruded, multi-layered battery separator
US-10003058-B2 · Jun 19, 2018 · US
Sizing die, extrusion molding apparatus, and method of manufacturing tubular member using the same
US-2018162036-A1 · Jun 14, 2018 · US
Very thin tube made from tpu and its production process
US-2018141254-A1 · May 24, 2018 · US
Pipe with embedded wire
US-9958091-B1 · May 1, 2018 · US
Molten resin extrusion device and extrusion method as well as molten resin molding apparatus and molding method
US-2018104878-A1 · Apr 19, 2018 · US
Method of Making Optical Fibers with Multiple Openings
US-2018093912-A1 · Apr 5, 2018 · US
Structured body having hydrophobic surface, and method for producing the same
US-2018086037-A1 · Mar 29, 2018 · US
Process for forming film
US-9902102-B2 · Feb 27, 2018 · US
Calibrating device for a blown film tube
US-9889593-B2 · Feb 13, 2018 · US
Head and system for continuously manufacturing composite hollow structure
US-2018029279-A1 · Feb 1, 2018 · US
Head and system for continuously manufacturing composite hollow structure
US-2018022006-A1 · Jan 25, 2018 · US
Spinning die for melt-blowing
US-2017355123-A1 · Dec 14, 2017 · US
Head and system for continuously manufacturing composite hollow structure
US-9840035-B2 · Dec 12, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/32?
- CPC B29C48/32 is the Cooperative Patent Classification code for “with annular openings, e.g. for forming tubular articles.”
- How many patents are filed under CPC B29C48/32 (with annular openings, e.g. for forming tubular articles)?
- Our database includes 214 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/32 growing?
- Publication counts under this code: 11 in 2024 vs 17 in 2025 (latest complete years).