Manufacturing line, process, and sintered article
US-2025383145-A1 · Dec 18, 2025 · US
Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction · 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 | F27B21/00 |
| Official title | Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction |
| Display label | Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 2 |
| 2023 | 12 |
| 2024 | 4 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Manufacturing line, process, and sintered article
US-12429281-B2 · Sep 30, 2025 · US
Method for producing sintered ore
US-12404566-B2 · Sep 2, 2025 · US
Manufacturing line, process, and sintered article
US-2025251190-A1 · Aug 7, 2025 · US
Rotary microwave apparatus
US-2025137721-A1 · May 1, 2025 · US
Manufacturing line, process, and sintered article
US-12270604-B2 · Apr 8, 2025 · US
Apparatus and methods for sintering
US-12257629-B2 · Mar 25, 2025 · US
Manufacturing line, process, and sintered article
US-2024247868-A1 · Jul 25, 2024 · US
Manufacturing line, process, and sintered article
US-11953264-B2 · Apr 9, 2024 · US
Apparatus and method for plasticizing solid oxide fuel cell
US-11946695-B2 · Apr 2, 2024 · US
Manufacturing line, process, and sintered article
US-2024019209-A1 · Jan 18, 2024 · US
Trolley sealing device for flue gas circulation system of sintering machine
US-11780004-B2 · Oct 10, 2023 · US
Method of manufacturing ceramic tape
US-11768032-B2 · Sep 26, 2023 · US
Method for supplying raw material to a sinter plant
US-2023257849-A1 · Aug 17, 2023 · US
Apparatus and methods for sintering
US-2023234127-A1 · Jul 27, 2023 · US
Method of Manufacturing Ceramic Tape
US-2023204285-A1 · Jun 29, 2023 · US
Trolley sealing device for flue gas circulation system of sintering machine
US-2023140052-A1 · May 4, 2023 · US
Surface combustion burner, composite burner, and ignition device for sintering machine
US-11635204-B2 · Apr 25, 2023 · US
Method of manufacturing ceramic tape
US-11629915-B2 · Apr 18, 2023 · US
Gas furnace
US-11629883-B2 · Apr 18, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27B21/00?
- CPC F27B21/00 is the Cooperative Patent Classification code for “Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction.”
- How many patents are filed under CPC F27B21/00 (Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC F27B21/00 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).