John D. Schofield
27Patents
12h-index
26Co-inventors
81Inventor score
Filing activity: Dec 29, 1980 → Sep 5, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6197103A | Pigment composition | Chemistry; Metallurgy | 29 | Expired |
| US4645611A | Dispersion | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7095044B2 | Field effect transistors and materials and methods for their manufacture | Electricity | 27 | Expired |
| US4461647A | Fluidizing agent | Chemistry; Metallurgy | 27 | Expired |
| US6197877A | Dispersants | Chemistry; Metallurgy | 26 | Expired |
| US5837046A | Ink jet printer ink composition | Chemistry; Metallurgy | 22 | Expired |
| US4349389A | Dispersible inorganic pigment | Chemistry; Metallurgy | 22 | Expired |
| US5700395A | Dispersants | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4797440A | Dispersed particulate composition | Chemistry; Metallurgy | 18 | Expired |
| US5536445A | Surfactant and dispersible or emulsifiable compositions employing surfactant | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4861380A | Composition | Chemistry; Metallurgy | 17 | Expired |
| US5300255A | Surfactant products of poly(hydroxyalkanecarboxylic acid) phosphate esters | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7008988B2 | Paint compositions | Chemistry; Metallurgy | 6 | Expired |
| US5753022A | Process | Chemistry; Metallurgy | 6 | Expired |
| US4954177A | Dispersion | Chemistry; Metallurgy | 5 | Expired |
| US7732514B2 | Filler composites | Emerging Cross-Sectional Technologies | 5 | Active |
| US5785894A | Dispersant for dispersing particulate solids | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6117935A | Rheology modifier for solvent-based coatings | Chemistry; Metallurgy | 2 | Expired |
| US7442327B2 | Use of dispersions in making electronic devices | Electricity | 1 | Expired |
| US5380363A | Pigment composition | Chemistry; Metallurgy | 1 | Expired |
| US9115259B2 | Filled poly vinyl chloride composition | Chemistry; Metallurgy | 1 | Active |
| US5954870A | Pigment composition | Chemistry; Metallurgy | 1 | Expired |
| US6770704B2 | Thickeners | Chemistry; Metallurgy | 0 | Expired |
| USRE44769E1 | Dispersants | General | 0 | Active |
| US6191253A | Polyether phosphates | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.