Fresh-keeping device and refrigerator
US-2023103443-A1 · Apr 6, 2023 · 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 | A23L3/3418 |
| Official title | — |
| Display label | Human Necessities (mapped technology topic) |
| Total patents | 74 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 6 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 7 |
| 2020 | 13 |
| 2021 | 12 |
| 2022 | 10 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oxygen removal module, fresh-keeping device and refrigerator
US-2023108252-A1 · Apr 6, 2023 · US
Food processing in metal cans
US-11524807-B2 · Dec 13, 2022 · US
Drawer assembly and refrigerating and freezing device with drawer assembly
US-11517035-B2 · Dec 6, 2022 · US
Air separation device and refrigerating and freezing device
US-11517850-B2 · Dec 6, 2022 · US
Internal air adjustment device
US-11471822-B2 · Oct 18, 2022 · US
Storage device
US-11445740-B2 · Sep 20, 2022 · US
Biosecurity system using monitoring and sanitization for an agricultural dwelling
US-2022280668-A1 · Sep 8, 2022 · US
Slicing and packaging assembly with modified atmosphere
US-2022184840-A1 · Jun 16, 2022 · US
Refrigerating and freezing device
US-11280537-B2 · Mar 22, 2022 · US
Refrigerating and freezing device
US-11268747-B2 · Mar 8, 2022 · US
Compositions and methods of preserving meat substitutes
US-2022022498-A1 · Jan 27, 2022 · US
Food item freshness notification system and related methods
US-11202456-B1 · Dec 21, 2021 · US
Shelf-stable pouch for fresh-packed fruits or vegetables
US-2021362891-A1 · Nov 25, 2021 · US
Vacuum breaking without feed line clogging
US-11178889-B2 · Nov 23, 2021 · US
Cargo transport system for perishable products
US-11176510-B2 · Nov 16, 2021 · US
Integrated gas delivery/removal system
US-2021259287-A1 · Aug 26, 2021 · US
High-Moisture, All-Natural, Shelf-Stable Food Product
US-2021251262-A1 · Aug 19, 2021 · US
Packaging with pressure driven oxygen egress
US-2021145029-A1 · May 20, 2021 · US
Shelf-stable pouch for fresh-packed fruits or vegetables
US-10974855-B2 · Apr 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A23L3/3418?
- CPC A23L3/3418 is the Cooperative Patent Classification code for “Human Necessities.”
- How many patents are filed under CPC A23L3/3418 (Human Necessities)?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC A23L3/3418 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).