Inventor · disambiguated record
Charles R. Wiedrich
Also filed as: WIEDRICH CHARLES R
17 granted patents·710 citations·filing 1984–1999
95Inventor score
Top patents by PatentIndex Score
17 records- 0196US5384102AChemical feederPPG INDUSTRIES INC·Filed 1993·Granted Jan 24, 1995·152 cites·19 claims
- 0293US5427748AChemical feederPPG INDUSTRIES INC·Filed 1994·Granted Jun 27, 1995·167 cites·24 claims
- 0388US5739243APolymerizable compositionPPG INDUSTRIES INC·Filed 1996·Granted Apr 14, 1998·64 cites·20 claims
- 0486US5089127AChemical feed apparatusPPG INDUSTRIES INC·Filed 1990·Granted Feb 18, 1992·87 cites·20 claims
- 0582US5811503APolymerizable compositionPPG INDUSTRIES INC·Filed 1996·Granted Sep 22, 1998·48 cites·19 claims
- 0681US4865760ACalcium hypochlorite compositionPPG INDUSTRIES INC·Filed 1988·Granted Sep 12, 1989·33 cites·10 claims
- 0780US4584420AMethod for producing vinyl chloridePPG INDUSTRIES INC·Filed 1984·Granted Apr 22, 1986·14 cites·10 claims
- 0879US5049385ASolid halogen-containing composition and method for producing samePPG INDUSTRIES INC·Filed 1988·Granted Sep 17, 1991·21 cites·14 claims
- 0973US5009806ACalcium hypochlorite articlePPG INDUSTRIES INC·Filed 1990·Granted Apr 23, 1991·27 cites·12 claims
- 1072US4970020ACalcium hypochlorite compositionPPG INDUSTRIES INC·Filed 1989·Granted Nov 13, 1990·20 cites·10 claims
- 1169US5106559ASolid halogen-containing composition and method for producing samePPG INDUSTRIES INC·Filed 1991·Granted Apr 21, 1992·16 cites·11 claims
- 1265US5973093APolymerizable polyol (allyl carbonate) compositionPPG IND OHIO INC·Filed 1996·Granted Oct 26, 1999·20 cites·22 claims
- 1351US6077921APolymerizable polyol (allyl carbonate) compositionsPPG IND OHIO INC·Filed 1998·Granted Jun 20, 2000·10 cites·14 claims
- 1447US6423803B1Polymerizable polyol (allyl carbonate) compositionsPPG IND OHIO INC·Filed 1999·Granted Jul 23, 2002·11 cites·17 claims
- 1540US5965680AOptical resin composition from polyol((meth)acryloyl carbonate) monomerPPG IND OHIO INC·Filed 1996·Granted Oct 12, 1999·10 cites·11 claims
- 1637US4927546AMethod for inhibiting growth of algae in recreational waterPPG INDUSTRIES INC·Filed 1988·Granted May 22, 1990·7 cites·11 claims
- 1736US5952441APartially polymerized mixture of diethylene glycol (allyl carbonate) compoundsPPG IND OHIO INC·Filed 1997·Granted Sep 14, 1999·3 cites·22 claims
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