Railroad car and door mechanism therefor
US-2019210621-A1 · Jul 11, 2019 · US
This page is not indexed by search engines while we improve data quality.
the openings being above axle level during discharge
the openings being above axle level during discharge · 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 | B61D7/04 |
| Official title | the openings being above axle level during discharge |
| Display label | the openings being above axle level during discharge |
| Total patents | 9 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 5 |
| 2017 | 1 |
| 2019 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Railroad car and door mechanism therefor
US-10239542-B2 · Mar 26, 2019 · US
Rail road hopper car
US-10214224-B2 · Feb 26, 2019 · US
Hopper car discharge structure
US-9834230-B2 · Dec 5, 2017 · US
Hopper car discharge structure
US-2016347331-A1 · Dec 1, 2016 · US
Rail road hopper car ridge fittings
US-2016137210-A1 · May 19, 2016 · US
Railroad car and door mechanism therefor
US-2016101790-A1 · Apr 14, 2016 · US
Rail road hopper car ridge fittings
US-9272717-B2 · Mar 1, 2016 · US
Railroad car and door mechanism therefor
US-9266539-B2 · Feb 23, 2016 · US