Inventor
WIEDRICH CHARLES R
US17 patents
⚠️ This page may combine multiple inventors who share the name “WIEDRICH CHARLES R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PPG INDUSTRIES INC
12 patentsUS5384102AJan 24, 1995
Chemical feeder
PPG INDUSTRIES INC152 citations98
US5739243AApr 14, 1998
Polymerizable composition
PPG INDUSTRIES INC64 citations96
US5427748AJun 27, 1995
Chemical feeder
PPG INDUSTRIES INC167 citations94
US5811503ASep 22, 1998
Polymerizable composition
PPG INDUSTRIES INC48 citations92
US5089127AFeb 18, 1992
Chemical feed apparatus
PPG INDUSTRIES INC87 citations92
US5009806AApr 23, 1991
Calcium hypochlorite article
PPG INDUSTRIES INC27 citations89
US4865760ASep 12, 1989
Calcium hypochlorite composition
PPG INDUSTRIES INC33 citations88
US5049385ASep 17, 1991
Solid halogen-containing composition and method for producing same
PPG INDUSTRIES INC21 citations81
US4970020ANov 13, 1990
Calcium hypochlorite composition
PPG INDUSTRIES INC20 citations79
US4927546AMay 22, 1990
Method for inhibiting growth of algae in recreational water
PPG INDUSTRIES INC7 citations73
US4584420AApr 22, 1986
Method for producing vinyl chloride
PPG INDUSTRIES INC14 citations73
US5106559AApr 21, 1992
Solid halogen-containing composition and method for producing same
PPG INDUSTRIES INC16 citations72
PPG IND OHIO INC
5 patentsUS5973093AOct 26, 1999
Polymerizable polyol (allyl carbonate) composition
PPG IND OHIO INC20 citations92
US6423803B1Jul 23, 2002
Polymerizable polyol (allyl carbonate) compositions
PPG IND OHIO INC11 citations71
US6077921AJun 20, 2000
Polymerizable polyol (allyl carbonate) compositions
PPG IND OHIO INC10 citations71
US5965680AOct 12, 1999
Optical resin composition from polyol((meth)acryloyl carbonate) monomer
PPG IND OHIO INC10 citations70
US5952441ASep 14, 1999
Partially polymerized mixture of diethylene glycol (allyl carbonate) compounds
PPG IND OHIO INC3 citations63