Fabrication of tragacanthin-PVA nanofibrous webs and applications thereof in water-absorbent filters
US-11896920-B2 · Feb 13, 2024 · US
of natural origin
of natural origin · 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 | B01D39/1615 |
| Official title | {of natural origin} |
| Display label | of natural origin |
| Total patents | 160 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 13 |
| 2017 | 11 |
| 2018 | 10 |
| 2019 | 15 |
| 2020 | 7 |
| 2021 | 25 |
| 2022 | 22 |
| 2023 | 18 |
| 2024 | 13 |
| 2025 | 14 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter medium and breather filter structure
US-2020330912-A1 · Oct 22, 2020 · US
Multi-phase filter medium
US-2020122070-A1 · Apr 23, 2020 · US
Nonwoven filtration media including microfibrillated cellulose fibers
US-2019366250-A1 · Dec 5, 2019 · US
Hydrocarbon fluid-water separation
US-2019314745-A1 · Oct 17, 2019 · US
Pre-coalescing multi-layered filter media
US-2019314747-A1 · Oct 17, 2019 · US
Nonwoven filtration media including microfibrillated cellulose fibers
US-10421033-B2 · Sep 24, 2019 · US
Stacked body
US-10413856-B2 · Sep 17, 2019 · US
Integrated composite filter and water purification system having the same
US-10399019-B2 · Sep 3, 2019 · US
Electrostatic removal of colloidal, soluble and insoluble materials from a fluid
US-10376900-B2 · Aug 13, 2019 · US
Filtration media
US-2019217231-A1 · Jul 18, 2019 · US
Internal combustion engine
US-2019186320-A1 · Jun 20, 2019 · US
Hydrocarbon fluid-water separation
US-10315140-B2 · Jun 11, 2019 · US
Filter media with a multi-layer structure
US-2019168143-A1 · Jun 6, 2019 · US
Pre-coalescing multi-layered filter media
US-10279291-B2 · May 7, 2019 · US
Method for retrovirus removal
US-10252199-B2 · Apr 9, 2019 · US
Filtration media
US-10195555-B2 · Feb 5, 2019 · US
Filter
US-10189335-B2 · Jan 29, 2019 · US
Filter media with a multi-layer structure
US-10155187-B2 · Dec 18, 2018 · US
Multi-layered filter media
US-2018353884-A1 · Dec 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D39/1615?
- CPC B01D39/1615 is the Cooperative Patent Classification code for “of natural origin.”
- How many patents are filed under CPC B01D39/1615 (of natural origin)?
- Our database includes 160 publications tagged with this CPC code.
- Is patent activity under CPC B01D39/1615 growing?
- Publication counts under this code: 13 in 2024 vs 14 in 2025 (latest complete years).