Flame analytics system
US-12467692-B2 · Nov 11, 2025 · US
Arrangement of indicators or alarms
Arrangement of indicators or alarms · 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 | F27D21/04 |
| Official title | Arrangement of indicators or alarms |
| Display label | Arrangement of indicators or alarms |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 9 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Display method, method of manufacturing semiconductor device, recording medium, processing apparatus, processing system, and management apparatus
US-2025308958-A1 · Oct 2, 2025 · US
Rotary Kiln
US-2025290696-A1 · Sep 18, 2025 · US
Reflow furnace
US-12385694-B2 · Aug 12, 2025 · US
Method for monitoring the wear of a refractory lining of a blast furnace
US-12270606-B2 · Apr 8, 2025 · US
Method and system for diagnosing, forecasting accretion in a rotary kiln
US-2025003682-A1 · Jan 2, 2025 · US
System and method for determining whether to clean a reflow oven
US-2024426555-A1 · Dec 26, 2024 · US
Processing apparatus, display method, method of manufacturing semiconductor device and non-transitory computer-readable recording medium
US-2024378989-A1 · Nov 14, 2024 · US
Heat treatment method and heat treatment apparatus
US-12125723-B2 · Oct 22, 2024 · US
Reflow furnace
US-2024344771-A1 · Oct 17, 2024 · US
Processing apparatus, display method, method of manufacturing semiconductor device and non-transitory computer-readable recording medium
US-12080149-B2 · Sep 3, 2024 · US
Damage detection system and method of use
US-12025377-B2 · Jul 2, 2024 · US
Reflow furnace
US-12013185-B2 · Jun 18, 2024 · US
Flame analytics system
US-2024125554-A1 · Apr 18, 2024 · US
Flame analytics system
US-11898800-B2 · Feb 13, 2024 · US
Steelmaking furnace with humidity control device
US-11827951-B2 · Nov 28, 2023 · US
Method for Predicting Burning Through Point Based on Encoder-Decoder Network
US-2023177313-A1 · Jun 8, 2023 · US
Sound-based diagnostics for a combustion air inducer
US-11655993-B2 · May 23, 2023 · US
Sound-based diagnostics for a combustion air inducer
US-2022381463-A1 · Dec 1, 2022 · US
Processing Apparatus, Display Method, Method of Manufacturing Semiconductor Device and Non-transitory Computer-readable Recording Medium
US-2022375331-A1 · Nov 24, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27D21/04?
- CPC F27D21/04 is the Cooperative Patent Classification code for “Arrangement of indicators or alarms.”
- How many patents are filed under CPC F27D21/04 (Arrangement of indicators or alarms)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC F27D21/04 growing?
- Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).