Multilayer porous membranes and methods of making the same
US-12496815-B2 · Dec 16, 2025 · US
using vacuum
using vacuum · 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 | B29C48/916 |
| Official title | {using vacuum} |
| Display label | using vacuum |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Improved multilayer porous membranes and methods of making the same
US-2023294387-A1 · Sep 21, 2023 · US
Gas-permeable barrier film and method of making the gas-permeable barrier film
US-11472085-B2 · Oct 18, 2022 · US
Device and method for generating a negative pressure in a film machine
US-11141891-B2 · Oct 12, 2021 · US
Prestretched elastic film in personal hygiene products
US-11034072-B2 · Jun 15, 2021 · US
Polymeric films and methods for making polymeric films
US-10717255-B2 · Jul 21, 2020 · US
Optical laminate, method for producing same, polarizing plate, and display device
US-10603878-B2 · Mar 31, 2020 · US
Optical laminate, method for producing same, polarizing plate, and display device
US-2019255820-A1 · Aug 22, 2019 · US
Production method for resin molding
US-2019152104-A1 · May 23, 2019 · US
Device and Method for Generating a Negative Pressure in a Film Machine
US-2019009439-A1 · Jan 10, 2019 · US
Sweeper roller, plastic film manufacturing device that uses same, and manufacturing method
US-10150240-B2 · Dec 11, 2018 · US
Optical film and production method for same
US-10088605-B2 · Oct 2, 2018 · US
Prestretched elastic film in personal hygiene products
US-2018126619-A1 · May 10, 2018 · US
Prestretched apertured elastic film with resistance to web breaks
US-2018126618-A1 · May 10, 2018 · US
Gas-permeable barrier film and method of making the gas-permeable barrier film
US-2017232652-A1 · Aug 17, 2017 · US
Polymeric films and methods for making polymeric films
US-2017129228-A1 · May 11, 2017 · US
Fragranced water-sensitive film
US-9617400-B2 · Apr 11, 2017 · US
Simultaneous plasticization and compatibilization process and compositions
US-9464188-B2 · Oct 11, 2016 · US
Optical film and production method for same
US-2016146977-A1 · May 26, 2016 · US
Method for producing aliphatic polyester film
US-9333693-B2 · May 10, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/916?
- CPC B29C48/916 is the Cooperative Patent Classification code for “using vacuum.”
- How many patents are filed under CPC B29C48/916 (using vacuum)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/916 growing?
- Publication counts under this code: 1 in 2023 vs 1 in 2025 (latest complete years).