Inventor
GRAY RALPH C
US22 patents
⚠️ This page may combine multiple inventors who share the name “GRAY RALPH C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PPG IND OHIO INC
13 patentsUS6312812B1Nov 6, 2001
Coated metal substrates and methods for preparing and inhibiting corrosion of the same
PPG IND OHIO INC129 citations97
US6410926B1Jun 25, 2002
Coating with optical taggent
PPG IND OHIO INC71 citations96
US6440580B1Aug 27, 2002
Weldable, coated metal substrates and methods for preparing and inhibiting corrosion of the same
PPG IND OHIO INC52 citations94
US6187849B1Feb 13, 2001
Temporary protective coating
PPG IND OHIO INC27 citations92
US6984674B2Jan 10, 2006
Curable, weldable coating compositions
PPG IND OHIO INC18 citations91
US6777034B2Aug 17, 2004
Weldable, coated metal substrates and methods for preparing and inhibiting corrosion of the same
PPG IND OHIO INC26 citations91
US6750274B2Jun 15, 2004
Weldable coating of phosphated epoxy polymer, curing agent and electroconductive pigment
PPG IND OHIO INC31 citations91
US6217674B1Apr 17, 2001
Compositions and process for treating metal substrates
PPG IND OHIO INC44 citations91
US7345101B2Mar 18, 2008
Aqueous composition of reaction product of epoxy and phosphorus materials with curing agent
PPG IND OHIO INC17 citations82
US7147897B2Dec 12, 2006
Weldable compositions comprising a conductive pigment and silicon and methods for using the same
PPG IND OHIO INC15 citations79
US7141619B2Nov 28, 2006
Corrosion and alkali-resistant compositions and methods for using the same
PPG IND OHIO INC8 citations71
US7282266B2Oct 16, 2007
Corrosion and alkali-resistant compositions and methods for using the same
PPG IND OHIO INC1 citations61
US7476444B2Jan 13, 2009
Layer of reaction product of epoxy and phosphorus materials and curing agent on substrate
PPG IND OHIO INC2 citations60
PPG INDUSTRIES INC
9 patentsUS4517322AMay 14, 1985
Acrylated alkyd and polyester resins
PPG INDUSTRIES INC82 citations95
US5653790AAug 5, 1997
Zinc phosphate tungsten-containing coating compositions using accelerators
PPG INDUSTRIES INC51 citations94
US5294265AMar 15, 1994
Non-chrome passivation for metal substrates
PPG INDUSTRIES INC88 citations94
US5306526AApr 26, 1994
Method of treating nonferrous metal surfaces by means of an acid activating agent and an organophosphate or organophosphonate and substrates treated by such method
PPG INDUSTRIES INC70 citations93
US4346143AAug 24, 1982
Method of applying zinc-rich primer and product
PPG INDUSTRIES INC37 citations87
US5149382ASep 22, 1992
Method of pretreating metal by means of composition containing S-triazine compound
PPG INDUSTRIES INC14 citations74
US4309328AJan 5, 1982
Stable aqueous dispersions of particles of vinylidene fluoride polymer
PPG INDUSTRIES INC17 citations70
US5693739ADec 2, 1997
Phenolic polymers from amino phenols and anhydride or epoxy polymers
PPG INDUSTRIES INC2 citations63
US5360492ANov 1, 1994
Pretreating composition containing substituted triazine compound
PPG INDUSTRIES INC4 citations63