Coupling and rotor shaft for molten metal devices
US-12560169-B2 · Feb 24, 2026 · US
Subject matter not provided for in other groups of this subclass
Subject matter not provided for in other groups of this subclass · 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 | F27D99/00 |
| Official title | Subject matter not provided for in other groups of this subclass |
| Display label | Subject matter not provided for in other groups of this subclass |
| Total patents | 42 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 7 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coupling and rotor shaft for molten metal devices
US-12410800-B2 · Sep 9, 2025 · US
Dental furnace
US-2025230981-A1 · Jul 17, 2025 · US
Measuring device
US-12169183-B2 · Dec 17, 2024 · US
Vertical type apparatus for firing cathode material of secondary battery
US-2024297290-A1 · Sep 5, 2024 · US
Holding element for a high-temperature furnace
US-2024247873-A1 · Jul 25, 2024 · US
Rotor and rotor shaft for molten metal
US-11939994-B2 · Mar 26, 2024 · US
Measuring device
US-2023003588-A1 · Jan 5, 2023 · US
Lock device for graphite furnace
US-11519206-B2 · Dec 6, 2022 · US
Rotor and rotor shaft for molten metal
US-2022213895-A1 · Jul 7, 2022 · US
Rotor and rotor shaft for molten metal
US-11286939-B2 · Mar 29, 2022 · US
Oxy-fuel combustion system and method for melting a pelleted charge material
US-11060792-B2 · Jul 13, 2021 · US
Lock device for graphite furnace
US-2021115710-A1 · Apr 22, 2021 · US
Change-out system for submerged combustion melting burner
US-10837705-B2 · Nov 17, 2020 · US
Metallurgical apparatus
US-10739074-B2 · Aug 11, 2020 · US
Feed mixture distribution device
US-10710035-B1 · Jul 14, 2020 · US
Feed mixture distribution device
US-2020197885-A1 · Jun 25, 2020 · US
Coupling and rotor shaft for molten metal devices
US-2019360492-A1 · Nov 28, 2019 · US
Coupling and rotor shaft for molten metal devices
US-2019360491-A1 · Nov 28, 2019 · US
Coupling and rotor shaft for molten metal devices
US-10465688-B2 · Nov 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27D99/00?
- CPC F27D99/00 is the Cooperative Patent Classification code for “Subject matter not provided for in other groups of this subclass.”
- How many patents are filed under CPC F27D99/00 (Subject matter not provided for in other groups of this subclass)?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC F27D99/00 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).