Robert D. Lundberg
260Patents
27h-index
81Co-inventors
93Inventor score
Filing activity: Nov 17, 1971 → Jan 20, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5017299A | Novel ethylene alpha-olefin copolymer substituted Mannich base lubricant dispersant additives | Chemistry; Metallurgy | 106 | Expired |
| US5229022A | Ethylene alpha-olefin polymer substituted mono- and dicarboxylic acid dispersant additives (PT-920) | Chemistry; Metallurgy | 88 | Expired |
| US4739834A | Controlled hydraulic fracturing via nonaqueous solutions containing low charge density polyampholytes | Emerging Cross-Sectional Technologies | 77 | Expired |
| US4963275A | Dispersant additives derived from lactone modified amido-amine adducts | Chemistry; Metallurgy | 73 | Expired |
| US4849572A | Process for preparing polybutenes having enhanced reactivity using boron trifluoride catalysts (PT-647) | Mechanical Engineering; Lighting; Heating | 67 | Expired |
| US5186851A | Ethylene alpha-olefin copolymer substituted mannich base lubricant dispersant additives | Chemistry; Metallurgy | 64 | Expired |
| US5633326A | Polyolefin-substituted amines grafted with poly(aromatic-N-monomers) for oleaginous compositions | Chemistry; Metallurgy | 53 | Expired |
| US4956107A | Amide dispersant additives derived from amino-amines | Mechanical Engineering; Lighting; Heating | 51 | Expired |
| US4153588A | Metal neutralized sulfonated EPDM terpolymers and compositions thereof | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5266223A | Ethylene alpha-olefin polymer substituted mono-and dicarboxylic acid dispersant additives | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5275747A | Derivatized ethylene alpha-olefin polymer useful as multifunctional viscosity index improver additive for oleaginous composition | Chemistry; Metallurgy | 46 | Expired |
| US4425462A | Drilling fluids based on sulfonated elastomeric polymers | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4447338A | Drilling mud viscosification agents based on sulfonated ionomers | Chemistry; Metallurgy | 44 | Expired |
| US5756428A | High functionality low molecular weight oil soluble dispersant additives useful in oleaginous composition | Chemistry; Metallurgy | 43 | Expired |
| US6100224A | Copolymers of ethylene .alpha.-olefin macromers and dicarboxylic monomers and derivatives thereof, useful as additives in lubricating oils and in fuels | Chemistry; Metallurgy | 42 | Expired |
| US4627926A | Thermally stable borehole fluids | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5026495A | Oil soluble dispersant additives useful in oleaginous compositions | Chemistry; Metallurgy | 39 | Expired |
| US3974241A | Blends of sulfonated elastomers with crystalline polyolefins | Chemistry; Metallurgy | 37 | Expired |
| US4857217A | Dispersant additives derived from amido-amines | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4971711A | Lactone-modified, mannich base dispersant additives useful in oleaginous compositions | Chemistry; Metallurgy | 36 | Expired |
| US4379914A | Polycaprolactone polymers | Chemistry; Metallurgy | 34 | Expired |
| US4193899A | Elastomeric systems having unusual memory characteristics | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5032653A | Direct synthesis by cationic polymerization of nitrogen-containing polymers | Chemistry; Metallurgy | 30 | Expired |
| US5366647A | Derivatized ethylene alpha-olefin polymer useful as multifunctional viscosity index improver additive for oleaginous composition (PT-796) | Chemistry; Metallurgy | 30 | Expired |
| US4183406A | Method of treating a borehole using gellable polymers | Chemistry; Metallurgy | 28 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.