Inventor
ZHANG FUCHENG
US12 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG FUCHENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHERING CORP
4 patentsUS7074923B2Jul 11, 2006
Process for preparing xanthine phosphodiesterase V inhibitors and precursors thereof
SCHERING CORP113 citations94
US6992220B2Jan 31, 2006
Process and intermediates for the preparation of 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide or salts thereof
SCHERING CORP10 citations73
US7595419B2Sep 29, 2009
Process and intermediates for the preparation of 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide or salts thereof
SCHERING CORP3 citations62
US7786301B2Aug 31, 2010
Process for preparing xanthine phosphodiesterase V inhibitors and precursors thereof
SCHERING CORP0 citations47
OPKO HEALTH INC
2 patentsUS9249144B2Feb 2, 2016
Process and intermediates for the synthesis of 8-[{1-(3,5-bis-(trifluoromethyl)phenyl)-ethoxy}-methyl]-8-phenyl-1,7-diaza-spiro[4.5]decan-2-one compounds
OPKO HEALTH INC1 citations57
US9822116B2Nov 21, 2017
Process and intermediates for the synthesis of 8-[{1-(3,5-bis-(trifluoromethyl)phenyl)-ethoxy}-methyl]-8-phenyl-1,7-diaza-spiro[4.5]decan-2-one compounds
OPKO HEALTH INC0 citations47