Inventor · disambiguated record
Derong Zhang
Also filed as: ZHANG DERONG
3 granted patents·3 citations·filing 2012–2014
51Inventor score
Technology areasB61F
Files withCRRC QIQIHAR CO LTD DALIAN RES & DEVELOPMENT CENTER1QIQIHAR RAILWAY ROLLING STOCK CO LTD DALIAN R&D CENTRE1XU SHIFENG1
Top patents by PatentIndex Score
3 records- 0162US8671845B2Central suspension device, wagon bogie and express railway wagonXU SHIFENG·Filed 2012·Granted Mar 18, 2014·3 cites·9 claims
- 0239US10086851B2Bogie and axle box suspension positioning device thereofQIQIHAR RAILWAY ROLLING STOCK CO LTD DALIAN R&D CENTRE·Filed 2014·Granted Oct 2, 2018·0 cites·15 claims
- 0333US10144437B2Swing bolster, swing bolster vibration reduction assembly and bogieCRRC QIQIHAR CO LTD DALIAN RES & DEVELOPMENT CENTER·Filed 2014·Granted Dec 4, 2018·0 cites·16 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →