POWELL DUFFRYN RAIL LTD has a total of 23 patent applications. Its first patent ever was published in 1997. It filed its patents most often in United Kingdom, EPO (European Patent Office) and Canada. Its main competitors in its focus markets transport and mechanical elements are STEFAN COLOMAN, HEWITT HERBERT HILLS and KIRBY EQUIPMENT COMPANY.
# | Country | Total Patents | |
---|---|---|---|
#1 | United Kingdom | 15 | |
#2 | EPO (European Patent Office) | 5 | |
#3 | Canada | 1 | |
#4 | Czechia | 1 | |
#5 | South Africa | 1 |
# | Industry | |
---|---|---|
#1 | Transport | |
#2 | Mechanical elements |
# | Technology | |
---|---|---|
#1 | Rail vehicle suspensions | |
#2 | Couplings | |
#3 | Springs |
# | Name | Total Patents |
---|---|---|
#1 | Hewitt Paul | 9 |
#2 | Latham Joseph | 3 |
#3 | Smith Brian | 2 |
#4 | Kibble Michael | 2 |
#5 | Harding Alan | 2 |
#6 | Long Jack R | 1 |
#7 | Tandy David W | 1 |
#8 | Alan Clark Richard | 1 |
#9 | Clark Richard Alan | 1 |
#10 | Smith Brian Leslie | 1 |
Publication | Filing date | Title |
---|---|---|
CA2488530A1 | Resilient damping friction wedge | |
GB0314399D0 | Side bearer | |
GB0312870D0 | Side bearer | |
GB0312390D0 | Rocker arrangement | |
GB0312276D0 | Resilient damping friction wedge | |
GB0311867D0 | Railcar truck | |
GB0311480D0 | Improvements in the track friendliness of Y25 bogie | |
GB0009265D0 | Suspension limiter | |
GB0009264D0 | Three piece bogie arrangement | |
EP0879750A1 | Improvements in bogie trucks for rail vehicles |