QINGDAO SRI TECHNOLOGY CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B61G COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES; DRAUGHT OR BUFFING APPLIANCES SPECIALLY ADAPTED FOR RAILWAY VEHICLES315

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0114,921 FRONT INSTALLED SUSPENSION SYSTEM HAVING OVERLOAD PROTECTION FIELD OF THE INVENTIONMay 06, 12Apr 30, 15[B61G]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9919721 Front suspension system having overload protectionMay 06, 13Mar 20, 18[B61G]
9902408 Vertical spring support device for couplerMay 25, 16Feb 27, 18[B61G]
9440664 Compact buffer having overload protectionSep 24, 14Sep 13, 16[B61G]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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