Flexible tube element
US-2025367869-A1 · Dec 4, 2025 · US
for applying pressure through the wall of an inflated bag or diaphragm
for applying pressure through the wall of an inflated bag or diaphragm · 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 | B29C51/28 |
| Official title | for applying pressure through the wall of an inflated bag or diaphragm |
| Display label | for applying pressure through the wall of an inflated bag or diaphragm |
| Total patents | 59 |
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 | 7 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 12 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Molding Apparatus and Molding Method, Pouch-Type Battery Case Manufactured Thereby, and Secondary Battery Including the Same
US-2025018620-A1 · Jan 16, 2025 · US
Skate and method of manufacture
US-2024341398-A1 · Oct 17, 2024 · US
Constrained forming of contoured composite hat stringers
US-12070892-B2 · Aug 27, 2024 · US
Method of and assembly for producing a fiber preform or manufacturing a composite component
US-2024253314-A1 · Aug 1, 2024 · US
Skate and method of manufacture
US-12048351-B2 · Jul 30, 2024 · US
Punch pin hole inspection apparatus and method using punch and die
US-12042976-B2 · Jul 23, 2024 · US
Airbag assembly and method for bending a flexible panel using same
US-11878458-B2 · Jan 23, 2024 · US
Method and apparatus for forming three-dimensional curved surface on laminated substrate, and three-dimensional curved laminated substrate
US-11833800-B2 · Dec 5, 2023 · US
Controlled shear vacuum forming for shaping preforms
US-11780178-B2 · Oct 10, 2023 · US
Device and method for forming a functional film intended to be laminated on an optical article
US-11745476-B2 · Sep 5, 2023 · US
Constrained Forming of Contoured Composite Hat Stringers
US-2023256663-A1 · Aug 17, 2023 · US
Punch Pin Hole Inspection Apparatus and Method Using Punch and Die
US-2023182370-A1 · Jun 15, 2023 · US
Battery Case Shaping Apparatus and Battery Case Manufacturing Method Using the Same
US-2023187738-A1 · Jun 15, 2023 · US
Fibre flattening
US-11673299-B2 · Jun 13, 2023 · US
Pyrometer control for hot drape formers
US-11597171-B2 · Mar 7, 2023 · US
Membrane device for manufacturing crash pad for vehicle including real wood sheet and method of manufacturing crash pad for vehicle including real wood sheet using membrane device
US-2023038216-A1 · Feb 9, 2023 · US
Three-dimensionally thermo-molded footwear
US-2022256972-A1 · Aug 18, 2022 · US
Controlled shear vacuum forming for shaping preforms
US-2022212421-A1 · Jul 7, 2022 · US
Three-dimensionally thermo-molded footwear
US-11324282-B2 · May 10, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C51/28?
- CPC B29C51/28 is the Cooperative Patent Classification code for “for applying pressure through the wall of an inflated bag or diaphragm.”
- How many patents are filed under CPC B29C51/28 (for applying pressure through the wall of an inflated bag or diaphragm)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC B29C51/28 growing?
- Publication counts under this code: 6 in 2024 vs 2 in 2025 (latest complete years).