The Lubrizol Corporation
1,313Patents
407Active
1,313Granted
54Portfolio score
Filing activity: Oct 6, 1971 → Apr 19, 2024 · 147 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4234435A | Novel carboxylic acid acylating agents, derivatives thereof, concentrate and lubricant compositions containing the same, and processes for their preparation | Chemistry; Metallurgy | 744 | Expired |
| US5527624A | Process for preparing sintered shapes and compositions used therein | Emerging Cross-Sectional Technologies | 139 | Expired |
| US5259487A | Adjustable dampers using electrorheological fluids | Mechanical Engineering; Lighting; Heating | 133 | Expired |
| US6368366B1 | Process and apparatus for making aqueous hydrocarbon fuel compositions, and aqueous hydrocarbon fuel composition | Chemistry; Metallurgy | 121 | Expired |
| US6368367B1 | Process and apparatus for making aqueous hydrocarbon fuel compositions, and aqueous hydrocarbon fuel composition | Chemistry; Metallurgy | 117 | Expired |
| US4728578A | Compositions containing basic metal salts and/or non-Newtonian colloidal disperse systems and vinyl aromatic containing polymers | Emerging Cross-Sectional Technologies | 112 | Expired |
| US4708753A | Water-in-oil emulsions | Emerging Cross-Sectional Technologies | 108 | Expired |
| US3948800A | Dispersant compositions | Emerging Cross-Sectional Technologies | 107 | Expired |
| US4454059A | Nitrogenous dispersants, lubricants and concentrates containing said nitrogenous dispersants | Chemistry; Metallurgy | 101 | Expired |
| US4119549A | Sulfurized compositions | Emerging Cross-Sectional Technologies | 96 | Expired |
| US6843916B2 | Slow release lubricant additives gel | Mechanical Engineering; Lighting; Heating | 92 | Expired |
| US5330662A | Compositions containing combinations of surfactants and derivatives of succinic acylating agent or hydroxyaromatic compounds and methods of using the same | Emerging Cross-Sectional Technologies | 89 | Expired |
| US4844756A | Water-in-oil emulsions | Emerging Cross-Sectional Technologies | 89 | Expired |
| US3980569A | Dispersants and process for their preparation | Chemistry; Metallurgy | 88 | Expired |
| US4100082A | Lubricants containing amino phenol-detergent/dispersant combinations | Mechanical Engineering; Lighting; Heating | 88 | Expired |
| US5705458A | Additive compositions for lubricants and functional fluids | Chemistry; Metallurgy | 84 | Expired |
| US5595965A | Biodegradable vegetable oil grease | Chemistry; Metallurgy | 84 | Expired |
| US6530964B2 | Continuous process for making an aqueous hydrocarbon fuel | Chemistry; Metallurgy | 83 | Expired |
| US4110349A | Two-step method for the alkenylation of maleic anhydride and related compounds | Chemistry; Metallurgy | 78 | Expired |
| US4320019A | Multi-purpose additive compositions and concentrates containing same | Chemistry; Metallurgy | 77 | Expired |
| US5084197A | Antiemulsion/antifoam agent for use in oils | Chemistry; Metallurgy | 77 | Expired |
| US5707940A | Environmentally friendly water based drilling fluids | Chemistry; Metallurgy | 76 | Expired |
| US5582385A | Method for controlling motion using an adjustable damper | Performing Operations; Transporting | 73 | Expired |
| US5773391A | High oleic polyol esters, compositions and lubricants, functional fluids and greases containing the same | Mechanical Engineering; Lighting; Heating | 73 | Expired |
| US4904401A | Lubricating oil compositions | Mechanical Engineering; Lighting; Heating | 72 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.