Refrigerator appliance with a drawer slide synchronizer
US-2017367480-A1 · Dec 28, 2017 · US
Sliding doors
Sliding doors · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F25D23/021 |
| Official title | {Sliding doors} |
| Display label | Sliding doors |
| Total patents | 445 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 34 |
| 2017 | 33 |
| 2018 | 32 |
| 2019 | 48 |
| 2020 | 60 |
| 2021 | 52 |
| 2022 | 54 |
| 2023 | 36 |
| 2024 | 36 |
| 2025 | 25 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Refrigerator
US-2017350638-A1 · Dec 7, 2017 · US
Covers for refrigeration systems
US-9829239-B2 · Nov 28, 2017 · US
Covers for refrigeration systems
US-2017138657-A1 · May 18, 2017 · US
Removable freezer door
US-9523530-B2 · Dec 20, 2016 · US
Refrigerator
US-9523531-B2 · Dec 20, 2016 · US
Storage module with built-in cap opener
US-2016363365-A1 · Dec 15, 2016 · US
Refrigerator with bottom mount freezer with multiple sliding drawers
US-9513049-B2 · Dec 6, 2016 · US
Drawer assembly
US-2016348959-A1 · Dec 1, 2016 · US
Refrigerator
US-9494362-B2 · Nov 15, 2016 · US
Removable freezer door
US-2016305705-A1 · Oct 20, 2016 · US
Drawer assembly
US-9435580-B2 · Sep 6, 2016 · US
Insulated door panels
US-9410363-B2 · Aug 9, 2016 · US
Convertible aircraft galley refrigerator/chiller with side door access
US-9399516-B2 · Jul 26, 2016 · US
Refrigerator
US-2016209107-A1 · Jul 21, 2016 · US
Self-adjusting door for an appliance
US-2016209102-A1 · Jul 21, 2016 · US
Refrigerator
US-9395117-B2 · Jul 19, 2016 · US
Flexible insulated door panels with internal baffles
US-9394742-B2 · Jul 19, 2016 · US
Touch sensor assembly and door including the same
US-2016186985-A1 · Jun 30, 2016 · US
Refrigerator
US-2016187051-A1 · Jun 30, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25D23/021?
- CPC F25D23/021 is the Cooperative Patent Classification code for “Sliding doors.”
- How many patents are filed under CPC F25D23/021 (Sliding doors)?
- Our database includes 445 publications tagged with this CPC code.
- Is patent activity under CPC F25D23/021 growing?
- Publication counts under this code: 36 in 2024 vs 25 in 2025 (latest complete years).