Method for preparing liposome
US-2020338519-A1 · Oct 29, 2020 · US
Filtration
Filtration · Cooperative Patent Classification (CPC)
Agriculture, food, personal care, health, and life sciences.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | A61L2/022 |
| Official title | Filtration |
| Display label | Filtration |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 14 |
| 2018 | 12 |
| 2019 | 17 |
| 2020 | 16 |
| 2021 | 14 |
| 2022 | 14 |
| 2023 | 7 |
| 2024 | 7 |
| 2025 | 12 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Removal of microorganisms from fluid samples using nanofiber filtration media
US-10722602-B2 · Jul 28, 2020 · US
Methods for increasing the capacity of flow-through processes
US-10550148-B2 · Feb 4, 2020 · US
Underwater station and a method
US-2019338546-A1 · Nov 7, 2019 · US
Dry sterilizing device and dry sterilizing method
US-2019321499-A1 · Oct 24, 2019 · US
Peritoneal dialysate fluid generation system
US-2019321536-A1 · Oct 24, 2019 · US
Sterilization process challenge device
US-2019307910-A1 · Oct 10, 2019 · US
Adsorptive membranes for trapping viruses
US-2019249150-A1 · Aug 15, 2019 · US
System for the thermally controlled processing of a biological sample
US-2019239975-A1 · Aug 8, 2019 · US
Sterilization and filtration of peptide compositions
US-10369237-B2 · Aug 6, 2019 · US
Adsorptive membranes for trapping viruses
US-10316296-B2 · Jun 11, 2019 · US
Blood treatment cassette having a sterilization opening and an associated closure, and blood treatment apparatus
US-10314960-B2 · Jun 11, 2019 · US
Method for treating solution contaminated with porcine circoviruses
US-2019167823-A1 · Jun 6, 2019 · US
Sterile containers for medical objects
US-2019159858-A1 · May 30, 2019 · US
Methods For Increasing The Capacity Of Purification Processes
US-2019153027-A1 · May 23, 2019 · US
Sterilization and filtration of peptide compositions
US-2019111165-A1 · Apr 18, 2019 · US
Method for retrovirus removal
US-10252199-B2 · Apr 9, 2019 · US
Semiconductor manufactured nano-structures for microbe or virus trapping or destruction
US-10246730-B2 · Apr 2, 2019 · US
Methods and devices used for redundant sterile filtration
US-10195544-B2 · Feb 5, 2019 · US
Sterilized-liquefied gas producing apparatus
US-2019015534-A1 · Jan 17, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A61L2/022?
- CPC A61L2/022 is the Cooperative Patent Classification code for “Filtration.”
- How many patents are filed under CPC A61L2/022 (Filtration)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC A61L2/022 growing?
- Publication counts under this code: 7 in 2024 vs 12 in 2025 (latest complete years).