Porous ptfe membrane
US-2025303330-A1 · Oct 2, 2025 · US
in several stretching steps
in several stretching steps · 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 | B29C55/085 |
| Official title | {in several stretching steps} |
| Display label | in several stretching steps |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Porous PTFE membrane
US-12318722-B2 · Jun 3, 2025 · US
Method of metal mask and manufacturing method of metal mask
US-11709420-B2 · Jul 25, 2023 · US
Heat-shrinkable polyester-based film roll
US-11565459-B2 · Jan 31, 2023 · US
Apparatus and method for stretching and repitching elastic members
US-11510823-B2 · Nov 29, 2022 · US
Air flow controller and manufacturing method of stretched film
US-11370161-B2 · Jun 28, 2022 · US
Porous ptfe membrane
US-2022062806-A1 · Mar 3, 2022 · US
Heat-shrinkable polyester-based film roll
US-2021370580-A1 · Dec 2, 2021 · US
Apparatus and method for stretching and repitching elastic members
US-2021236343-A1 · Aug 5, 2021 · US
Design method of metal mask and manufacturing method of metal mask
US-2021187576-A1 · Jun 24, 2021 · US
Apparatus and method for stretching and repitching elastic members
US-10966875-B2 · Apr 6, 2021 · US
Air flow controller and manufacturing method of stretched film
US-2020108547-A1 · Apr 9, 2020 · US
Method for producing film
US-10518467-B2 · Dec 31, 2019 · US
Heat setting optical films
US-2019315046-A1 · Oct 17, 2019 · US
Heat setting optical films
US-10350818-B2 · Jul 16, 2019 · US
Film-stretching apparatus and method of producing film
US-10328613-B2 · Jun 25, 2019 · US
Film-stretching apparatus and method of producing film
US-10137608-B2 · Nov 27, 2018 · US
Film-stretching apparatus and method of producing film
US-10090500-B2 · Oct 2, 2018 · US
Film-stretching apparatus and method of producing film
US-2018083245-A1 · Mar 22, 2018 · US
Film-stretching apparatus and method of producing film
US-2018079113-A1 · Mar 22, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C55/085?
- CPC B29C55/085 is the Cooperative Patent Classification code for “in several stretching steps.”
- How many patents are filed under CPC B29C55/085 (in several stretching steps)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC B29C55/085 growing?
- Publication counts under this code: 2 in 2023 vs 2 in 2025 (latest complete years).