Patent assignee · US · COMPANY

STEPAN COMPANY

227Patents
148Active
227Granted
54Portfolio score

Filing activity: Jun 14, 1984 → Feb 21, 2024 · 32 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US6822105B1 Method of making alkyl esters using glycerin Emerging Cross-Sectional Technologies 89 Expired
US7774978B2 Method of controlling the release of agricultural active ingredients from treated plant seeds Human Necessities 89 Active
US5240639A Foaming agent Emerging Cross-Sectional Technologies 73 Expired
US6242526A Antimicrobial polymer latexes derived from unsaturated quaternary ammonium compounds and antimicrobial coatings, sealants, adhesives and elastomers produced from such latexes Chemistry; Metallurgy 68 Expired
US5922779A Polyol blends for producing hydrocarbon-blown polyurethane and polyisocyanurate foams Chemistry; Metallurgy 58 Expired
US6768015B1 Method of making alkyl esters using pressure Emerging Cross-Sectional Technologies 57 Expired
US5444094A Methods and compositions for disinfecting surfaces containing tuberculosis causing bacteria Human Necessities 56 Expired
US6359022B1 Pentane compatible polyester polyols Chemistry; Metallurgy 54 Expired
US6528070B1 Emulsion comprising a ternary surfactant blend of cationic, anionic, and bridging surfactants, oil and water, and methods of preparing same Human Necessities 54 Expired
US7666828B2 Sulfonated estolides and other derivatives of fatty acids, methods of making them, and compositions and processes employing them Chemistry; Metallurgy 53 Active
US6492445B2 Antimicrobial polymer latexes derived from unsaturated quaternary ammonium compounds and antimicrobial coatings, sealants, adhesives and elastomers produced from such latexes Chemistry; Metallurgy 45 Expired
US5616781A Liquid detergent compositions comprising salts of alpha sulfonated fatty acid esters and anionic surfactants Chemistry; Metallurgy 45 Expired
US5945394A Heavy duty liquid detergent compositions comprising salts of .alpha.-sulfonated fatty acid methyl esters and use of .alpha.-sulphonated fatty acid salts to inhibit redeposition of soil on fabric Chemistry; Metallurgy 44 Expired
US4678515A Foam generating compositions Chemistry; Metallurgy 43 Expired
US4676835A Foam generating compositions Chemistry; Metallurgy 40 Expired
US6306805A Shampoo and body wash composition comprising ternary surfactant blends of cationic, anionic, and bridging surfactants and methods of preparing same Chemistry; Metallurgy 38 Expired
US8119588B2 Hard surface cleaner compositions of sulfonated estolides and other derivatives of fatty acids and uses thereof Human Necessities 34 Active
US6339057B1 High foaming detergent composition having a non-ionic surfactant base Chemistry; Metallurgy 33 Expired
US6281178A Reduced residue hard surface cleaner comprising hydrotrope Chemistry; Metallurgy 33 Expired
US5637758A Liquid detergent compositions comprising salts of alpha sulfonated fatty acid methyl esters, and anionic surfactants Chemistry; Metallurgy 32 Expired
US4668423A Liquid biodegradable surfactant and use thereof Chemistry; Metallurgy 28 Expired
US6664363B1 Low viscosity polyester polyols and methods for preparing same Chemistry; Metallurgy 28 Expired
US5496869A Methods and compositions for preparing rigid foams with non-chlorofluorocarbon blowing agents Chemistry; Metallurgy 23 Expired
US4595711A Aromatic polyester polyols fluorocarbon compatibilized with ethoxylate propoxylate compounds for urethane and isocyanurate foams Chemistry; Metallurgy 22 Expired
US4608432A Self-compatibilizing polyester polyol blends based on polyalkylene terephthalate Chemistry; Metallurgy 22 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.