Oven
US-2026092739-A1 · Apr 2, 2026 · US
Multi-chamber type furnaces, (F27B9/029 takes precedence)
Multi-chamber type furnaces, (F27B9/029 takes precedence) · 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 | F27B9/028 |
| Official title | {Multi-chamber type furnaces, (F27B9/029 takes precedence)} |
| Display label | Multi-chamber type furnaces, (F27B9/029 takes precedence) |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 1 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 10 |
| 2025 | 14 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oxygen concentration detection system and reflow oven using the same
US-2026085891-A1 · Mar 26, 2026 · US
Heat treatment system
US-2025383154-A1 · Dec 18, 2025 · US
Furnace
US-2025362083-A1 · Nov 27, 2025 · US
Heat treatment line for a hot strip
US-2025340966-A1 · Nov 6, 2025 · US
Heat treatment apparatus and guide roller for heat treatment apparatus
US-2025230009-A1 · Jul 17, 2025 · US
Heat treatment apparatus
US-2025230977-A1 · Jul 17, 2025 · US
Heat treatment apparatus
US-2025230980-A1 · Jul 17, 2025 · US
Heat treatment apparatus
US-2025230518-A1 · Jul 17, 2025 · US
Sintering furnace and method of treating a processing element in a sintering furnace
US-2025198702-A1 · Jun 19, 2025 · US
Rapid ceramic processing techniques and equipment
US-2025187228-A1 · Jun 12, 2025 · US
Biomass direct reduced iron
US-2025179596-A1 · Jun 5, 2025 · US
Suction collection system
US-2025171250-A1 · May 29, 2025 · US
Heat treatment furnace
US-2025075977-A1 · Mar 6, 2025 · US
Rapid ceramic processing techniques and equipment
US-12240143-B2 · Mar 4, 2025 · US
Rapid ceramic processing techniques and equipment
US-2025050536-A1 · Feb 13, 2025 · US
System and method for determining whether to clean a reflow oven
US-2024426555-A1 · Dec 26, 2024 · US
Annealing facility for electrical steel sheet, finish annealing method and production method of electrical steel sheet, and non-oriented electrical steel sheet
US-2024410029-A1 · Dec 12, 2024 · US
Substrate treating apparatus and substrate treating system comprising the same
US-12146710-B2 · Nov 19, 2024 · US
Method for ventilating an oven
US-12140376-B2 · Nov 12, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27B9/028?
- CPC F27B9/028 is the Cooperative Patent Classification code for “Multi-chamber type furnaces, (F27B9/029 takes precedence).”
- How many patents are filed under CPC F27B9/028 (Multi-chamber type furnaces, (F27B9/029 takes precedence))?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC F27B9/028 growing?
- Publication counts under this code: 10 in 2024 vs 14 in 2025 (latest complete years).