Inventor

DUNNAVANT WILLIAM R

US30 patents

⚠️ This page may combine multiple inventors who share the name “DUNNAVANT WILLIAM R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DUNNAVANT WILLIAM R

ASHLAND OIL INC

Phenolic resin-polyisocyanate binder systems containing a phosphorus based acid

Phenolic resin-polyisocyanate binder systems containing a phosphorus halide and use thereof

Process of forming foundry cores and molds utilizing binder curable by free radical polymerization

No-bake process for preparing foundry shapes for casting low melting metal castings

Polyurethane-forming foundry binders containing a polyester polyol

Urethane binder compositions for no-bake and cold box foundry application utilizing isocyanato-urethane polymers

Phenolic resin-polyisocyanate binder systems containing an organohalophosphate and use thereof

Process for casting metals

Modifiers for aqueous basic solutions of phenolic resole resins

Thermosetting resinous molding compositions

Cost reduction of acid curing foundry binders with alkylated aromatic hydrocarbon solvents

Binder composition

Polyurethane-forming foundry binders containing a polyether polyol

Hot box process for preparing foundry shapes with certain aqueous phenolic resin solutions

Foundry binder systems based upon acrylated epoxy resins and epoxy resins

Heat curable foundry mixes and binder compositions

Cyclopentadiene derivatives, method for preparing, and use thereof

Hot box process for preparing foundry shapes

Foundry mixes based upon reclaimed sand

Thermosetting molding compounds

Fulvene binder compositions

Composition, method for preparing and use thereof

Polymeric cyclopentadiene derivatives, method for preparing and use thereof

Polyurethane-forming binder systems containing a polyphosphoryl chloride

Cyclopentadiene derivatives, method for preparing, and use thereof

ASHLAND INC

Foundry mixes containing a polyether polyol and their use

Polyurethane-forming binder systems containing 2,2&#39;-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivatives

Ester cured no-bake foundry binder system

Polyurethane-forming no-bake foundry binder systems

WESTERN LITHO PLATE & SUPPLY

Monomeric compounds

Polyurethane-forming binder systems containing 2,2'-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivatives