Production method for precarbonized fiber bundle, production method for carbon fiber bundle, and precarbonization furnace
US-12516451-B2 · Jan 6, 2026 · US
adapted for treating the charge in vacuum or special atmosphere
adapted for treating the charge in vacuum or special atmosphere · 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 | F27B9/04 |
| Official title | adapted for treating the charge in vacuum or special atmosphere |
| Display label | adapted for treating the charge in vacuum or special atmosphere |
| Total patents | 25 |
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 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rapid ceramic processing techniques and equipment
US-2025187228-A1 · Jun 12, 2025 · US
Heat treatment method and heat treatment furnace
US-12305248-B2 · May 20, 2025 · US
Heat treatment furnace apparatus
US-2025100059-A1 · Mar 27, 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
Vacuum-coating system and method for coating a band-type material
US-12195838-B2 · Jan 14, 2025 · US
Heat treatment method and heat treatment furnace
US-2024392402-A1 · Nov 28, 2024 · US
Furnace for producing secondary battery cathode material and method for firing secondary battery cathode material
US-12117242-B2 · Oct 15, 2024 · US
Rapid ceramic processing techniques and equipment
US-12090684-B2 · Sep 17, 2024 · US
Rapid ceramic processing techniques and equipment
US-2024116826-A1 · Apr 11, 2024 · US
Production method for precarbonized fiber bundle, production method for carbon fiber bundle, and precarbonization furnace
US-2024035205-A1 · Feb 1, 2024 · US
Rapid ceramic processing techniques and equipment
US-2023415376-A1 · Dec 28, 2023 · US
Method for continuously producing silicon nitride sintered compact
US-2023357087-A1 · Nov 9, 2023 · US
Float glass production device and float glass production method
US-11760679-B2 · Sep 19, 2023 · US
Heat treatment method and heat treatment furnace
US-2022136077-A1 · May 5, 2022 · US
Furnace for producing secondary battery cathode material and method for firing secondary battery cathode material
US-2022065534-A1 · Mar 3, 2022 · US
Vacuum-coating system and method for coating a band-type material
US-2021238726-A1 · Aug 5, 2021 · US
Float glass production device and float glass production method
US-2021061697-A1 · Mar 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27B9/04?
- CPC F27B9/04 is the Cooperative Patent Classification code for “adapted for treating the charge in vacuum or special atmosphere.”
- How many patents are filed under CPC F27B9/04 (adapted for treating the charge in vacuum or special atmosphere)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC F27B9/04 growing?
- Publication counts under this code: 5 in 2024 vs 7 in 2025 (latest complete years).