Door assemblies for insulated boxcars and refrigerated boxcars
US-12434744-B2 · Oct 7, 2025 · US
Internal lining, e.g. insulating
Internal lining, e.g. insulating · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B61D17/18 |
| Official title | Internal lining, e.g. insulating |
| Display label | Internal lining, e.g. insulating |
| Total patents | 74 |
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 | 7 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 5 |
| 2025 | 18 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low-carbon granulated metallic units
US-12420335-B2 · Sep 23, 2025 · US
Use of a basic oxygen furnace to produce granulated metallic units, and associated systems, devices, and methods
US-12403529-B2 · Sep 2, 2025 · US
Treating cooling water in iron production facilities, and associated systems, devices, and methods
US-12370599-B2 · Jul 29, 2025 · US
Processing granulated metallic units within electric arc furnaces, and associated systems and methods
US-2025084496-A1 · Mar 13, 2025 · US
Torpedo cars for use with granulated metallic unit production, and associated systems, devices, and methods
US-2025083222-A1 · Mar 13, 2025 · US
Continuous granulated metallic units production, and associated systems, devices, and methods
US-2025083232-A1 · Mar 13, 2025 · US
Low-sulfur granulated metallic units, and associated systems, devices, and methods
US-2025083223-A1 · Mar 13, 2025 · US
Railcars for transporting granulated metallic units, and associated systems, devices, and methods
US-2025083713-A1 · Mar 13, 2025 · US
Use of a basic oxygen furnace to produce granulated metallic units, and associated systems, devices, and methods
US-2025083230-A1 · Mar 13, 2025 · US
Loading granulated metallic units into railcars, and associated systems, devices, and methods
US-2025085156-A1 · Mar 13, 2025 · US
Door assemblies for insulated boxcars and refrigerated boxcars
US-2023399034-A1 · Dec 14, 2023 · US
Cladding Part and Method for Producing a Cladding Part
US-2023365076-A1 · Nov 16, 2023 · US
Composite insulated boxcar floor
US-11807280-B2 · Nov 7, 2023 · US
Side wall for a rail vehicle
US-11708096-B2 · Jul 25, 2023 · US
Polycarbonate resin composition
US-11603467-B2 · Mar 14, 2023 · US
Frame structure for vehicle
US-2022396297-A1 · Dec 15, 2022 · US
Polycarbonate resin composition
US-2022325099-A1 · Oct 13, 2022 · US
Interior decoration structure and railway vehicle with interior decoration structure
US-11447159-B2 · Sep 20, 2022 · US
Rail vehicle, driver's cabin and composite aluminum plate assembly
US-11390304-B2 · Jul 19, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61D17/18?
- CPC B61D17/18 is the Cooperative Patent Classification code for “Internal lining, e.g. insulating.”
- How many patents are filed under CPC B61D17/18 (Internal lining, e.g. insulating)?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC B61D17/18 growing?
- Publication counts under this code: 5 in 2023 vs 18 in 2025 (latest complete years).