STEPAN CANADA INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4744882 Polycondensates of sulfonated coal tar fractionsExpiredJan 02, 87May 17, 88[C10C]
4654152 Base mix fabric softenerExpiredOct 07, 85Mar 31, 87[D06M]
4395326 Treatment of coal tar emulsionsExpiredJan 25, 82Jul 26, 83[C10G]
4213867 Fabric conditioning compositionsExpiredDec 29, 78Jul 22, 80[D06M]

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