ZZ

Zhengfeng Zhang

EG Evonik Röhm Gmbh: 1 patents #19 of 103Top 20%
Overall (2016): #166,079 of 481,213Top 35%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9290431 Process for preparation of highly pure, non-yellowing methacrylic acid Gerhard Koelbl, Lorenza Sartorelli, Horst Hiltner, Huisheng Wang, Mirko Michel 2016-03-22