Composite fittings plate
US-2025326409-A1 · Oct 23, 2025 · US
Covers or access openings; Arrangements thereof
Covers or access openings; Arrangements thereof · 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 | B61D5/08 |
| Official title | {Covers or access openings; Arrangements thereof} |
| Display label | Covers or access openings; Arrangements thereof |
| Total patents | 34 |
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 | 6 |
| 2016 | 5 |
| 2017 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composite Jacket System for Improved Safety
US-2025187299-A1 · Jun 12, 2025 · US
Hopper railroad car having top hatch cover assembly
US-12286141-B2 · Apr 29, 2025 · US
Tank car bottom outlet valve operating assembly
US-2025122948-A1 · Apr 17, 2025 · US
Cover assemblies for railroad cars
US-12202529-B2 · Jan 21, 2025 · US
Open top gondola railcars
US-12168466-B2 · Dec 17, 2024 · US
Manway assemblies for railroad cars
US-12077195-B2 · Sep 3, 2024 · US
Gasket for hatch cover assembly of a rail car
US-11760393-B2 · Sep 19, 2023 · US
Repositionable protective housing or manway cover
US-2023219603-A1 · Jul 13, 2023 · US
Cover assemblies for railroad cars
US-2023202535-A1 · Jun 29, 2023 · US
Hopper railroad car having top hatch cover assembly
US-2023113865-A1 · Apr 13, 2023 · US
Open top gondola railcars
US-2023083126-A1 · Mar 16, 2023 · US
Hopper railroad car flexible top hatch cover
US-11603121-B2 · Mar 14, 2023 · US
Railroad car vented hatch cover assembly including a replaceable combined vented hatch cover protector and gasket
US-11548536-B1 · Jan 10, 2023 · US
Manway assemblies for railroad cars
US-2022250660-A1 · Aug 11, 2022 · US
Gasket for hatch cover assembly of a rail car
US-2021039687-A1 · Feb 11, 2021 · US
Adapter for bottom outlet valve
US-10690260-B2 · Jun 23, 2020 · US
Railway car hatch cover latch
US-10661815-B2 · May 26, 2020 · US
Adapter for Bottom Outlet Valve
US-2020041032-A1 · Feb 6, 2020 · US
Railway car hatch cover latch
US-2019161096-A1 · May 30, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61D5/08?
- CPC B61D5/08 is the Cooperative Patent Classification code for “Covers or access openings; Arrangements thereof.”
- How many patents are filed under CPC B61D5/08 (Covers or access openings; Arrangements thereof)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC B61D5/08 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).