Asymmetric hopper cars
US-12122431-B2 · Oct 22, 2024 · US
with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00)
with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00) · 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 | B61D7/02 |
| Official title | with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00) |
| Display label | with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00) |
| Total patents | 92 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 13 |
| 2021 | 8 |
| 2022 | 4 |
| 2023 | 14 |
| 2024 | 3 |
| 2025 | 24 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Discharge gate arrangements for railroad hopper cars
US-12024211-B2 · Jul 2, 2024 · US
Mechanism For Longitudinal Door Systems
US-2024075966-A1 · Mar 7, 2024 · US
Railroad hopper car with flow through structure
US-2023399033-A1 · Dec 14, 2023 · US
Covered hopper car
US-11820407-B2 · Nov 21, 2023 · US
Hopper railroad car having top hatch cover assembly
US-2023322276-A1 · Oct 12, 2023 · US
Hopper Railcar Composite Partition
US-2023322277-A1 · Oct 12, 2023 · US
Discharge gate arrangements for railroad hopper cars
US-2023311955-A1 · Oct 5, 2023 · US
Rapid discharge door locking system
US-11745771-B2 · Sep 5, 2023 · US
Railcar door operating systems and methods with capstan drives
US-11738783-B2 · Aug 29, 2023 · US
Hopper car double doors
US-11731668-B2 · Aug 22, 2023 · US
Hopper railroad car having top hatch cover assembly
US-11713061-B2 · Aug 1, 2023 · US
Discharge gate arrangements for railroad hopper cars
US-11708095-B2 · Jul 25, 2023 · US
Mechanism for longitudinal door systems
US-11702113-B2 · Jul 18, 2023 · US
Railroad hopper car structure and gate therefor
US-11697437-B2 · Jul 11, 2023 · US
Railroad hopper car with flow through structure
US-11691652-B2 · Jul 4, 2023 · US
Hopper railcar composite partition
US-11679789-B2 · Jun 20, 2023 · US
Hopper car discharge gate seal assembly
US-2022371629-A1 · Nov 24, 2022 · US
Hopper Car Outlet Gate Mechanical Flap to Prevent Pellet Loss
US-2022315064-A1 · Oct 6, 2022 · US
Discharge Gate Sensing Method, System and Assembly
US-2022135093-A1 · May 5, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61D7/02?
- CPC B61D7/02 is the Cooperative Patent Classification code for “with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00).”
- How many patents are filed under CPC B61D7/02 (with discharge openings in the bottoms (with body in two halves and discharge by tipping the halves B61D9/00))?
- Our database includes 92 publications tagged with this CPC code.
- Is patent activity under CPC B61D7/02 growing?
- Publication counts under this code: 3 in 2024 vs 24 in 2025 (latest complete years).