Assignee
STEPAN CHEMICAL CO
15 granted patents·411 citations·filing 1971–1983
Top patents by PatentIndex Score
15 records- 0192US4148821AProcess for sulfonationSTEPAN CHEMICAL CO·Filed 1976·Granted Apr 10, 1979·91 cites·43 claims
- 0291US4390474ASulfonation petroleum compositionSTEPAN CHEMICAL CO·Filed 1980·Granted Jun 28, 1983·47 cites·42 claims
- 0390US4246387AEmulsion polymerization with sulfonated alkoxylated alkyl arylol maleatesSTEPAN CHEMICAL CO·Filed 1978·Granted Jan 20, 1981·48 cites·7 claims
- 0482US4370272AAlkoxylated quaternary ammonium surfactantsSTEPAN CHEMICAL CO·Filed 1981·Granted Jan 25, 1983·56 cites·13 claims
- 0580US4224455ASulfonated alkoxylated alkyl arylol maleate reactive surfactantsSTEPAN CHEMICAL CO·Filed 1978·Granted Sep 23, 1980·25 cites·6 claims
- 0680US4018333AMetal fastener sticks and process of preparing same by curing polymeric binder for said under conditions of U.V. irradiationSTEPAN CHEMICAL CO·Filed 1976·Granted Apr 19, 1977·29 cites·28 claims
- 0768US4269730ASubstituted imidazoline reactions with chloroacetate saltsSTEPAN CHEMICAL CO·Filed 1979·Granted May 26, 1981·26 cites·11 claims
- 0865US4252192AProcess for enhanced oil recovery employing petroleum sulfonatesSTEPAN CHEMICAL CO·Filed 1979·Granted Feb 24, 1981·22 cites·47 claims
- 0961US4521611APolyester polyol blend from phthalic anhydride bottomsSTEPAN CHEMICAL CO·Filed 1983·Granted Jun 4, 1985·15 cites·3 claims
- 1061US4052431AProcess for the production of commercial alpha olefin sulfonatesSTEPAN CHEMICAL CO·Filed 1976·Granted Oct 4, 1977·8 cites·12 claims
- 1152US3949024APhosphite esters of hindered bis and tris phenolsSTEPAN CHEMICAL CO·Filed 1971·Granted Apr 6, 1976·6 cites·17 claims
- 1244US4111853AParticulate composition of sodium alpha olefin sulfonate and sodium silicateSTEPAN CHEMICAL CO·Filed 1977·Granted Sep 5, 1978·14 cites·4 claims
- 1341US4452731ACleaner for ovens and the like using sodium alpha olefin sulfonate and sodium silicateSTEPAN CHEMICAL CO·Filed 1982·Granted Jun 5, 1984·10 cites·20 claims
- 1438US4451393ACleaner for ovens and the like using sodium alpha olefin sulfonate, sodium hydroxide, and sodium silicateSTEPAN CHEMICAL CO·Filed 1982·Granted May 29, 1984·9 cites·23 claims
- 1526US4347742AEvaluating sprayabilitySTEPAN CHEMICAL CO·Filed 1980·Granted Sep 7, 1982·5 cites·15 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →