Ultraviolet system for disinfection
US-10517976-B2 · Dec 31, 2019 · US
Human Necessities
Human Necessities · 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 | A23L3/28 |
| Official title | — |
| Display label | Human Necessities (mapped technology topic) |
| Total patents | 118 |
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 | 4 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 15 |
| 2020 | 13 |
| 2021 | 9 |
| 2022 | 11 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Data output for high frequency domain
US-10470475-B2 · Nov 12, 2019 · US
Controlling ultraviolet intensity over a surface of a light sensitive object
US-10433493-B2 · Oct 8, 2019 · US
Ultraviolet irradiation device
US-2019216959-A1 · Jul 18, 2019 · US
Ultraviolet Illumination With Optical Elements
US-2019201570-A1 · Jul 4, 2019 · US
Plasmonic assisted systems and methods for interior energy-activation from an exterior source
US-2019134595-A1 · May 9, 2019 · US
Storage device including target UV illumination ranges
US-10272168-B2 · Apr 30, 2019 · US
Plasmonic assisted systems and methods for interior energy-activation from an exterior source
US-10213763-B2 · Feb 26, 2019 · US
Plasmonic assisted systems and methods for interior energy-activation from an exterior source
US-10201796-B2 · Feb 12, 2019 · US
Food processing appliance
US-2018338512-A1 · Nov 29, 2018 · US
Produce drawer
US-2018325148-A1 · Nov 15, 2018 · US
Ultraviolet illuminator
US-10124081-B2 · Nov 13, 2018 · US
Irradiation assembly for liquid purification assembly, purification assembly and beverage dispenser
US-10118839-B2 · Nov 6, 2018 · US
Fluid sterilization apparatus and fluid sterilization method
US-2018310498-A1 · Nov 1, 2018 · US
Movable Ultraviolet Radiation Beam
US-2018303134-A1 · Oct 25, 2018 · US
Systems and methods for interior energy-activation from an exterior source
US-2018304225-A1 · Oct 25, 2018 · US
Phosphor composition having selected surface coatings
US-2018271121-A1 · Sep 27, 2018 · US
Storage Device Including Target UV Illumination Ranges
US-2018264151-A1 · Sep 20, 2018 · US
Movable ultraviolet radiation source
US-10010100-B2 · Jul 3, 2018 · US
Ultraviolet System for Disinfection
US-2018140726-A1 · May 24, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A23L3/28?
- CPC A23L3/28 is the Cooperative Patent Classification code for “Human Necessities.”
- How many patents are filed under CPC A23L3/28 (Human Necessities)?
- Our database includes 118 publications tagged with this CPC code.
- Is patent activity under CPC A23L3/28 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).