Inventor · Belper, GB

Stephen J. Cook

34Patents
6h-index
39Co-inventors
69Inventor score

Filing activity: Jun 8, 1990 → Jul 17, 2017

Most-cited inventions

PatentTitleAreaCited byStatus
US7651984B2 Lubricant from water in oil emulsion with suspended solid base Chemistry; Metallurgy 19 Expired
US5792735A Lubricating oil compositions Mechanical Engineering; Lighting; Heating 15 Expired
US5114601A Overbased calixarates, compositions containing them and use as lubricating oil additives Chemistry; Metallurgy 14 Expired
US5205946A Process for the production of overbased calixarates Chemistry; Metallurgy 13 Expired
US5674821A Detergent compositions Chemistry; Metallurgy 10 Expired
US5397484A Alkaline earth metal sulphurised hydrocarbyl phenate-containing additive concentrate, process for its production and use thereof Chemistry; Metallurgy 7 Expired
US5589445A Overbased metal salts, their preparation and use Chemistry; Metallurgy 5 Expired
US7939478B2 Method of lubricating a marine diesel engine Chemistry; Metallurgy 4 Active
US8877694B2 Asphaltene dispersant containing lubricating compositions Chemistry; Metallurgy 4 Active
US5356550A Lubricating oil additives Chemistry; Metallurgy 4 Expired
US10260019B2 Hydroxyaromatic succinimide detergents for lubricating compositions Chemistry; Metallurgy 3 Active
US5616543A Lubricating oil compositions Mechanical Engineering; Lighting; Heating 3 Expired
US5458790A Alkaline earth metal hydrocarbyl salicylate concentrates, their preparation and use Chemistry; Metallurgy 3 Expired
US6028039A Highly overbased lubricating oil additive concentrates their preparation and use Chemistry; Metallurgy 2 Expired
US7456136B2 Linear compounds containing phenolic and salicylic units Chemistry; Metallurgy 2 Expired
US6008166A Detergent compositions Chemistry; Metallurgy 2 Expired
US8354362B2 Polymer and lubricating compositions thereof Chemistry; Metallurgy 2 Active
US10005979B2 Lubricant composition containing an antiwear agent Chemistry; Metallurgy 2 Active
US5286873A Succinimide derivatives and processes for their preparation Chemistry; Metallurgy 2 Expired
US9528068B2 Lubricants with good TBN retention Chemistry; Metallurgy 1 Active
US5145984A Bis-succinimide derivatives Chemistry; Metallurgy 1 Expired
US5945388A Lubricating oil compositions Mechanical Engineering; Lighting; Heating 1 Expired
US6796666B1 Four-point planar mechanical mount with high precision Physics 1 Expired
US7928043B2 Lubricating compositions Chemistry; Metallurgy 0 Active
US10577556B2 Michael adduct amino esters as total base number boosters for marine diesel engine lubricating compositions Chemistry; Metallurgy 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.