Copper CHA zeolite catalysts
US-9839905-B2 · Dec 12, 2017 · US
Filtering material for liquid or gaseous fluids
Filtering material for liquid or gaseous fluids · 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 | B01D39/00 |
| Official title | Filtering material for liquid or gaseous fluids |
| Display label | Filtering material for liquid or gaseous fluids |
| Total patents | 181 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 23 |
| 2017 | 18 |
| 2018 | 24 |
| 2019 | 21 |
| 2020 | 20 |
| 2021 | 12 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 12 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyimide-based resin film cleaning liquid, method for cleaning polyimide-based resin film, method for producing polyimide coating, method for producing filter, filter medium, or filter device, and method for producing chemical solution for lithography
US-2017321168-A1 · Nov 9, 2017 · US
Roll type filter cleaning apparatus
US-9808743-B2 · Nov 7, 2017 · US
Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and process for their production
US-9808761-B2 · Nov 7, 2017 · US
Plugged honeycomb structure and method for forming plugged honeycomb structure
US-2017314436-A1 · Nov 2, 2017 · US
Article of manufacture for securing a catalyst substrate
US-9764282-B2 · Sep 19, 2017 · US
Recirculation filter for an electronic enclosure
US-2017178695-A1 · Jun 22, 2017 · US
Web comprising fine fiber and reactive, adsorptive or absorptive particulate
US-2017151515-A1 · Jun 1, 2017 · US
Copper CHA zeolite catalysts
US-9656254-B2 · May 23, 2017 · US
Filter medium for deactivating allergens
US-2017120178-A1 · May 4, 2017 · US
Method for retrovirus removal
US-9623352-B2 · Apr 18, 2017 · US
Method and apparatus for preparation of lactide using lactide purification process
US-2017101390-A1 · Apr 13, 2017 · US
Web comprising fine fiber and reactive, adsorptive or absorptive particulate
US-9610523-B2 · Apr 4, 2017 · US
Filter media including a waved filtration layer
US-2017080368-A1 · Mar 23, 2017 · US
Air intake system for an engine
US-9598091-B2 · Mar 21, 2017 · US
Nonwoven fibrous structures including ionic reinforcement material, and methods
US-2017037564-A1 · Feb 9, 2017 · US
Separator
US-2016304358-A1 · Oct 20, 2016 · US
Stable filter media including nanofibers
US-2016303498-A1 · Oct 20, 2016 · US
Filtering material, filter, method of filtration, method of producing phenylimine compound, method of producing alkoxyphenylimine compound, and compound
US-2016280638-A1 · Sep 29, 2016 · US
Filter elements; air cleaner; assembly; and, methods
US-2016271551-A1 · Sep 22, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D39/00?
- CPC B01D39/00 is the Cooperative Patent Classification code for “Filtering material for liquid or gaseous fluids.”
- How many patents are filed under CPC B01D39/00 (Filtering material for liquid or gaseous fluids)?
- Our database includes 181 publications tagged with this CPC code.
- Is patent activity under CPC B01D39/00 growing?
- Publication counts under this code: 7 in 2024 vs 12 in 2025 (latest complete years).