Inventor · disambiguated record
Qianwen Cheng
Also filed as: CHENG QIANWEN
9 granted patents·1 pending application·53 citations·filing 2004–2012
86Inventor score
Files withFENG XIAOGEN5JIANGSU SINORGCHEM TECH CO LTD2SINORGCHEM CO SHANDONG1SINORGCHEM COMPANY SHANDONG1SINORGCHEM SHANDONG CO LTD1
Top patents by PatentIndex Score
10 records- 0189US7235694B2Process for preparing 4-aminodiphenylamineSINORGCHEM CO SHANDONG·Filed 2006·Granted Jun 26, 2007·16 cites·26 claims
- 0280US8293673B2Process for preparing 4-aminodiphenylamineFENG XIAOGEN·Filed 2007·Granted Oct 23, 2012·4 cites·26 claims
- 0380US7176333B2Process for preparing 4-aminodiphenylamineSINORGCHEM COMPANY SHANDONG·Filed 2004·Granted Feb 13, 2007·16 cites·35 claims
- 0477US7989662B2Process for preparing 4-aminodiphenylamineJIANGSU SINORGCHEM TECH CO LTD·Filed 2008·Granted Aug 2, 2011·3 cites·10 claims
- 0576US7084302B2Process for preparing 4-aminodiphenylamineSINORGCHEM SHANDONG CO LTD·Filed 2004·Granted Aug 1, 2006·12 cites·34 claims
- 0667US8686188B2Process for preparing 4-aminodiphenylamineFENG XIAOGEN·Filed 2011·Granted Apr 1, 2014·1 cites·32 claims
- 0762US9029603B2Process for preparing alkylated p-phenylenediaminesFENG XIAOGEN·Filed 2012·Granted May 12, 2015·0 cites·18 claims
- 0862US8486223B2Falling film evaporatorFENG XIAOGEN·Filed 2010·Granted Jul 16, 2013·1 cites·22 claims
- 0954US2008039657A1Process for preparing 4-aminodiphenylamineFENG XIAOGEN·Filed 2007·Application pending·0 cites
- 1052US8349230B2Spherical rubber chemicals and the method for preparing the sameJIANGSU SINORGCHEM TECH CO LTD·Filed 2011·Granted Jan 8, 2013·0 cites·12 claims
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