Inventor · disambiguated record

Donald R. Valk

Also filed as: VALK DONALD R

2 granted patents·57 citations·filing 1982–1984

65Inventor score

Technology areasC04B C09K

Files withCORDOVA CHEMICAL COMPANY OF MI1 CORODOVA CHEMICAL COMPANY OF M1

Top patents by PatentIndex Score

2 records

0173US4482381ASolid polyamine-based fluid loss control additivesCORDOVA CHEMICAL COMPANY OF MI·Filed 1982·Granted Nov 13, 1984·35 cites·22 claims
0258US4569694ASolid polyamine-based fluid loss control additivesCORODOVA CHEMICAL COMPANY OF M·Filed 1984·Granted Feb 11, 1986·22 cites·8 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →