Assignee
ZHAO ZHENDONG
CN·3 granted patents·8 citations·filing 1989–2010
Top patents by PatentIndex Score
3 records- 0133US8680232B2Preparation method of pimaric acid type resin acidZHAO ZHENDONG·Filed 2010·Granted Mar 25, 2014·0 cites·9 claims
- 0232US8946469B2Process for preparing isopimaric acidZHAO ZHENDONG·Filed 2010·Granted Feb 3, 2015·0 cites·6 claims
- 0330US5050901ATwo-way shock proof and shock absorbing towing couplingZHAO ZHENDONG·Filed 1989·Granted Sep 24, 1991·8 cites·16 claims
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