A System and Method for Enumerating Microorganisms
US-2026056108-A1 · Feb 26, 2026 · US
Comparing before/after passage through filter
Comparing before/after passage through filter · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N2015/0662 |
| Official title | {Comparing before/after passage through filter} |
| Display label | Comparing before/after passage through filter |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hot water cart conditioning system and method
US-12383869-B2 · Aug 12, 2025 · US
Gas measurement device and gas measurement method
US-12379297-B2 · Aug 5, 2025 · US
Device and Method for Splitting Three-Dimensional Agglomerates
US-2025033052-A1 · Jan 30, 2025 · US
Hot water cart conditioning system and method
US-2024390858-A1 · Nov 28, 2024 · US
System and method for testing a filter
US-2024369465-A1 · Nov 7, 2024 · US
Inspection device and inspection method for pillar-shaped honeycomb filter
US-12117386-B2 · Oct 15, 2024 · US
System and method for testing a filter
US-12105003-B2 · Oct 1, 2024 · US
Vanox hot water cart conditioning method
US-11975294-B2 · May 7, 2024 · US
Filter life prediction for an aspirating smoke detector
US-2024035949-A1 · Feb 1, 2024 · US
Slurry analysis system using flow restriction
US-11753914-B2 · Sep 12, 2023 · US
Gas measurement device and gas measurement method
US-2023078944-A1 · Mar 16, 2023 · US
System and method for testing a filter
US-2023066472-A1 · Mar 2, 2023 · US
Inspection device and inspection method for pillar-shaped honeycomb filter
US-2022404261-A1 · Dec 22, 2022 · US
System and method for measuring a concentration of a pollutant within a gas
US-11280705-B2 · Mar 22, 2022 · US
Method for processing filter to obtain calibration dust filter, and method for off-site calibration using calibration dust filter
US-11181458-B2 · Nov 23, 2021 · US
Particulate detection apparatus
US-11137332-B2 · Oct 5, 2021 · US
Slurry analysis system using flow restriction
US-2021087912-A1 · Mar 25, 2021 · US
Vanox Hot Water Cart Conditioning Method
US-2021086138-A1 · Mar 25, 2021 · US
Mixed gas integrity testing of porous materials without permeate side access
US-10955328-B2 · Mar 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N2015/0662?
- CPC G01N2015/0662 is the Cooperative Patent Classification code for “Comparing before/after passage through filter.”
- How many patents are filed under CPC G01N2015/0662 (Comparing before/after passage through filter)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC G01N2015/0662 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).