Michael C. Welch
33Patents
10h-index
22Co-inventors
71Inventor score
Filing activity: Aug 8, 1991 → Apr 5, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5294365A | Hydroxypolyethers as low-foam surfactants | Chemistry; Metallurgy | 85 | Expired |
| US6342474B1 | Hard surface cleaner containing nonionic surfactants | Chemistry; Metallurgy | 38 | Expired |
| US6271191A | Hard surface cleaner containing anionic surfactant | Chemistry; Metallurgy | 26 | Expired |
| US5516452A | Aqueous rinse - aid composition comprising a two - component blend of alkoxylated nonionic surfactants | Chemistry; Metallurgy | 26 | Expired |
| US5518648A | Solid dishwashing composition comprising a two-component blend of alkoxylated nonionic surfactants | Chemistry; Metallurgy | 26 | Expired |
| US5536440A | Stable, aqueous concentrated liquid detergent compositions containing hydrophilic copolymers | Chemistry; Metallurgy | 18 | Expired |
| US5534183A | Stable, aqueous concentrated liquid detergent compositions containing hydrophilic copolymers | Chemistry; Metallurgy | 14 | Expired |
| US5750483A | Non-phosphate machine dishwashing compositions containing polycarboxylate polymers and nonionic graft copolymers of vinyl acetate and polyalkylene oxide | Chemistry; Metallurgy | 13 | Expired |
| US5739099A | Rinse aid compositions containing modified acrylic polymers | Chemistry; Metallurgy | 13 | Expired |
| US6133218A | Aqueous based solvent free cleaner compositions containing two nonionic surfactants | Chemistry; Metallurgy | 10 | Expired |
| US5977048A | Aqueous based solvent free cleaning degreaser compositions containing alcohol alkoxylates, polyoxyalkylene block copolymers, and fatty alcohols having oxyethylate moieties | Chemistry; Metallurgy | 10 | Expired |
| US5998346A | Non-phosphate machine dishwashing compositions containing copolymers of alkylene oxide adducts of allyl alcohol and acrylic acid | Chemistry; Metallurgy | 10 | Expired |
| US5618782A | Hydrophilic copolymers for reducing the viscosity of detergent slurries | Chemistry; Metallurgy | 9 | Expired |
| US5425894A | Polyhydroxypolyethers as low foam surfactants | Electricity | 9 | Expired |
| US6315835A | Anti-spotting and anti-filming hard surface cleaning formulations and methods | Chemistry; Metallurgy | 8 | Expired |
| US5733861A | Hydrophilic copolymers for reducing the viscosity of detergent slurries | Chemistry; Metallurgy | 8 | Expired |
| US6455486B1 | Anti-spotting and anti-filming hard surface cleaning formulations and methods | Chemistry; Metallurgy | 7 | Expired |
| US5965509A | Aqueous based solvent free cleaner compositions containing a blend of polyoxyalkylene block copolymers and fatty alcohols oxyethylate moieties | Chemistry; Metallurgy | 5 | Expired |
| US6191315A | Haze free polyether polyol compositions and a method for their preparation | Chemistry; Metallurgy | 5 | Expired |
| US6440919B1 | Aqueous based solvent free cleaner compositions containing two nonionic surfactants | Chemistry; Metallurgy | 4 | Expired |
| US5759978A | Non-phosphate machine dishwashing compositions containing polycarboxylate polymers and polyalkylene oxide homopolymers | Chemistry; Metallurgy | 4 | Expired |
| US5880082A | Aqueous based solvent free cleaning compositions containing alcohol alkoxylates, alkoxylated fatty alcohols and fatty alcohols having oxyethylate moieties | Chemistry; Metallurgy | 4 | Expired |
| US5958859A | Aqueous based solvent free cleaner compositions containing a blend of polyoxyalkylene block copolymers | Chemistry; Metallurgy | 3 | Expired |
| US7084101B2 | Aqueous based solvent free cleaner compositions containing two nonionic surfactants | Chemistry; Metallurgy | 3 | Expired |
| US5753608A | Rinse aid compositions containing phosphate esters | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.