Personal protective anti-viral face mask
US-11123584-B1 · Sep 21, 2021 · US
Organic material, e.g. cellulose, cotton
Organic material, e.g. cellulose, cotton · 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 | B01D39/04 |
| Official title | Organic material, e.g. cellulose, cotton |
| Display label | Organic material, e.g. cellulose, cotton |
| Total patents | 101 |
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 | 10 |
| 2017 | 14 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 13 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 3 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Preservative removal from eye drops
US-2020368107-A1 · Nov 26, 2020 · US
Process of separating blood plasma/serum from whole blood
US-10843111-B2 · Nov 24, 2020 · US
Use of polymers as filtering aids and/or stabilizers
US-2020346147-A1 · Nov 5, 2020 · US
Preservative removal from eye drops
US-10786429-B2 · Sep 29, 2020 · US
Use of polymers comprising thermoplastic polymers as filtration aids and/or stabilising agent
US-10744434-B2 · Aug 18, 2020 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-2020179838-A1 · Jun 11, 2020 · US
Fine fiber media layer
US-2020122068-A1 · Apr 23, 2020 · US
Carbon fiber composite, a medium incorporating the carbon fiber composite, and a related method
US-2020123332-A1 · Apr 23, 2020 · US
Fiber filtering apparatus
US-2020122060-A1 · Apr 23, 2020 · US
Sulfur scavenging materials
US-10604539-B2 · Mar 31, 2020 · US
Multistage fiber filtering apparatus capable of selectively filtering
US-10596495-B2 · Mar 24, 2020 · US
Carbon fiber composite, a medium incorporating the carbon fiber composite, and a related method
US-10563023-B2 · Feb 18, 2020 · US
Fiber filtering apparatus
US-10549217-B2 · Feb 4, 2020 · US
Integrated composite filter cartridge and water purifying system having same
US-10399011-B2 · Sep 3, 2019 · US
Integrated composite filter and water purification system having the same
US-10399019-B2 · Sep 3, 2019 · US
Device for removing noxae from blood, extracorporeal perfusion system comprising such a device and method of manufacturing such a device
US-2019262528-A1 · Aug 29, 2019 · US
Preservative Removal from Eye Drops
US-2019247277-A1 · Aug 15, 2019 · US
Electrostatic removal of colloidal, soluble and insoluble materials from a fluid
US-10376900-B2 · Aug 13, 2019 · US
Thermally expandable thermoplastic microspheres and process for their preparation
US-2019233606-A1 · Aug 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D39/04?
- CPC B01D39/04 is the Cooperative Patent Classification code for “Organic material, e.g. cellulose, cotton.”
- How many patents are filed under CPC B01D39/04 (Organic material, e.g. cellulose, cotton)?
- Our database includes 101 publications tagged with this CPC code.
- Is patent activity under CPC B01D39/04 growing?
- Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).