Derek A. Law
37Patents
9h-index
32Co-inventors
75Inventor score
Filing activity: Jan 8, 1979 → Apr 22, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4943383A | Novel lubricant epoxides | Chemistry; Metallurgy | 43 | Expired |
| US4225447A | Emulsifiable lubricant compositions | Chemistry; Metallurgy | 27 | Expired |
| US5104579A | Phosphonate adducts of olefinic lubricants having enhanced properties | Chemistry; Metallurgy | 25 | Expired |
| US4711736A | Sulfurized olefins as antiwear/extreme pressure additives for lubricants and fuels and compositions thereof | Chemistry; Metallurgy | 23 | Expired |
| US4253975A | Aqueous lubricants containing metal hydrocarbyl dithiophosphates | Chemistry; Metallurgy | 21 | Expired |
| US5057235A | Sulfur-phosphorus adducts of chromium catalyzed polyalphaolefins | Chemistry; Metallurgy | 19 | Expired |
| US5552071A | Alkylated diphenyl ether lubricants | Chemistry; Metallurgy | 15 | Expired |
| US4419251A | Aqueous lubricant | Chemistry; Metallurgy | 15 | Expired |
| US4257775A | Determination of water content in various systems | Physics | 10 | Expired |
| US4654156A | Sulfurized olefins as antiwear additives and compositions thereof | Chemistry; Metallurgy | 9 | Expired |
| US5171861A | Thiadiazole-aryl sulfonate reaction products as multifunctional additives and compositions containing same | Chemistry; Metallurgy | 9 | Expired |
| US4428855A | Oil-in-water emulsion fluids | Chemistry; Metallurgy | 8 | Expired |
| US5037567A | Phosphorus-sulfur olefinic derivatives as multifunctional lubricants and multifunctional additives for lubricants | Chemistry; Metallurgy | 8 | Expired |
| US8993574B2 | Pyrrole antifungal agents | Chemistry; Metallurgy | 6 | Active |
| US7360947B2 | Temperature sensor apparatus | Physics | 5 | Active |
| US4786425A | Additive for lubricants and hydrocarbon fuels comprising reaction products of olefins, sulfur, hydrogen sulfide and polymeric succinimide compounds | Chemistry; Metallurgy | 5 | Expired |
| US9452168B2 | Pyrrole antifungal agents | Chemistry; Metallurgy | 5 | Active |
| US10201524B2 | Antifungal agents | Chemistry; Metallurgy | 5 | Active |
| US4897209A | Lubricant compositions containing arylsulfonic acids, and organo phosphites and reaction products thereof | Chemistry; Metallurgy | 5 | Expired |
| US5254276A | Diol phosphite adducts of olefins as multifunctional lubricants and additives for lubricants | Chemistry; Metallurgy | 5 | Expired |
| US4661274A | Additive for lubricants and hydrocarbon fuels comprising reaction products of olefins, sulfur, hydrogen sulfide and nitrogen containing polymeric compounds | Chemistry; Metallurgy | 4 | Expired |
| US5399276A | Lubricant composition containing the reaction product of an olefinic compound and an alkoxylated-amine-phosphite | Chemistry; Metallurgy | 4 | Expired |
| US4198207A | Determination of water content in presence of oils | Physics | 4 | Expired |
| US4992184A | Phosphite sulfonate reaction products as multifunctional additives | Chemistry; Metallurgy | 3 | Expired |
| US10596150B2 | Antifungal agents | Chemistry; Metallurgy | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.