David E. Graham
40Patents
7h-index
44Co-inventors
69Inventor score
Filing activity: Nov 19, 1976 → Jan 21, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4596653A | Demulsifying process | Chemistry; Metallurgy | 17 | Expired |
| US6117929A | Method for preventing or retarding the formation of gas hydrates | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6180699A | Blend for preventing or retarding the formation of gas hydrates | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6451892B1 | Method for preventing or retarding the formation of gas hydrates | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4806231A | Method for desalting crude oil | Chemistry; Metallurgy | 10 | Expired |
| US6281274A | Method for preventing or retarding the formation of gas hydrates | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4325973A | Hydroxyalkyl amides as fungicides to eumycotina in phanerogamia plant life | Human Necessities | 8 | Expired |
| US6369180B1 | Process for making water soluble polyvinylcaprolactam polymers | Chemistry; Metallurgy | 7 | Expired |
| US4195096A | Carboxylic amides as fungicides to eumycotina in phanerogamia plant life | Human Necessities | 6 | Expired |
| US4178167A | Herbicidal N-(haloacetyl)-N-(N'-methylenepyrrolidonyl)-2-alkoxyanilines useful as herbicides | Human Necessities | 5 | Expired |
| US5916544A | Sunscreen concentrate | Human Necessities | 5 | Expired |
| US6432355B1 | Corrosion inhibition during transport of water and a hydrocarbon through a pipeline | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4112002A | Mononitrotrifluoromethyl diphenylethers | Human Necessities | 4 | Expired |
| US4344788A | Method of plant growth regulation | Human Necessities | 3 | Expired |
| US4096195A | Cyclic two-stage nitration process for preparing 4-chloro-3,5-dinitrobenzotrifluoride from 4-chlorobenzotrifluoride | Chemistry; Metallurgy | 3 | Expired |
| US4902433A | Equipment and method for filtration using a fabric of polyacrylonitrile fibers | Performing Operations; Transporting | 3 | Expired |
| US4105797A | Fungicidal 3-amino-6-trifluoromethyl-2,4-dinitrodiphenylethers | Human Necessities | 3 | Expired |
| US4153446A | Herbicidal N-(haloacetyl)-N'-methylenepyrrolidonyl)-2-cycloalkoxyanilines | Human Necessities | 2 | Expired |
| US4086356A | Fungicidal-N-(3-halo-2,6-dinitro-4-trifluoromethylphenyl)-pyrrolidones | Chemistry; Metallurgy | 2 | Expired |
| US4087270A | Herbicidal-N-(3-amino-2,4-dinitro-6-trifluoromethylphenyl)-pyrrolidones | Chemistry; Metallurgy | 2 | Expired |
| US4178168A | Herbicidal n-(haloacetyl)-n-(n-methylene pyrrolidonyl)-2-oxyalkyleneoxyalkylanilines | Chemistry; Metallurgy | 1 | Expired |
| US4391681A | Method of inhibiting formation of and breaking of mercury butter in chlor-alkali cells | Chemistry; Metallurgy | 1 | Expired |
| US4202821A | N-(N'-Methylenepyrrolidonyl)-2-substituted anilines | Human Necessities | 1 | Expired |
| US6432909B1 | Water soluble dye complexing polymers | Chemistry; Metallurgy | 1 | Expired |
| US4117006A | Selective chlorination of benzoyl chloride | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.